nuratiqah marsidi, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, nur ‘izzati ismail.  (2026).  phytotoxicity of petroleum hydrocarbon on phragmites karka from the perspective of the mass ratio of plant to contaminant.  - south african journal of botany.  28 - 34. 

ainil farhan mohd udaiyappan, hassimi abu hasan, mohd sobri takriff, siti rozaimah sheikh abdullah, mohd hafizuddin muhamad.  (2026).  treatment of anaerobic palm oil mill effluent using native scenedesmus sp. ukm9 cultivated in a high-rate algal pond.  - process safety and environmental protection.  1 - 10. 

islam j k elhabil, siti rozaimah sheikh abdullah, nur ’izzati ismail, ahmad razi othman, noorashikin md saleh, hassimi abu hasan, siti shilatul najwa sharuddin.  (2026).  kinetic and mechanisms of polyethylene microplastic remediation in leachate via bioaugmented phytoremediation.  - arabian journal of chemistry.  1 - 11. 

jahira alias, hassimi abu hasan, siti rozaimah sheikh abdullah, setyo budi kurniawan.  (2026).  recovering phosphorus and nitrogen from wastewater as bio-struvite via biomineralisation.  - process safety and environmental protection.  1 - 18. 

fairuz afiqah buslima, hassimi abu hasan, jahira alias, jaga sahsiny jaganathan, junaidah buhari, suriya vathi subramanian and siti rozaimah sheikh abdullah.  (2025).  performance of integrated biofilm-phytoremediation process in reclaiming water from domestic wastewater .  - water.  1 - 14. 

nurull muna daud, siti rozaimah sheikh abdullah, siti shilatul najwa sharuddin, ahmad razi othman, hassimi abu hasan, noorashikin md salleh, nur ’izzati ismail.  (2025).  bioaugmentation of klebsiella pneumoniae isolate m1 in a continuous sequential phytoreactor integrating scirpus grossus and eichhornia crassipes plants for batik effluent treatment.  - journal of water process engineering.  1 - 18. 

nor sakinah mohd said, muhammad zahin zakaria, norsyasmin izzati samsuddin, nur aina’a zafirah barom, navieen al. m. murugiah, siti rozaimah sheikh abdullah.  (2025).  reclaiming wolffia arrhiza as fish feed in the phytoremediation of aquaculture effluent.  - journal of environmental management.  1 - 9. 

saja radhi nayyef alanbary, siti rozaimah sheikh abdullah, israa abdulwahab al-baldawi, hassimi abu hasan, nurina anuar, ahmad razi othman, fatihah suja’, nur ‘izzati ismail, siti shilatul najwa sharuddin.  (2025).  assessing phytotoxicity of sand contaminated with petroleum hydrocarbons on phragmites karka.  - international journal of environmental science and technology.  6545 - 6556. 

mohammad mohammad alnawajha, setyo budi kurniawan, siti rozaimah sheikh abdullah, ahmad razi othman, hajjar hartini wan jusoh, azimah ismail, hassimi abu hasan.  (2025).  water vs. salt extraction of bio-coagulant from leucaena leucocephala pods for removing turbidity from aquaculture effluent.  - journal of the indian chemical society.  1 - 7. 

ahmad razi othman, muhammad fauzul imron, nur ‘izzati ismail, mohd aidil kamaruzzaman, siti rozaimah sheikh abdullah, israa abdulwahab al-baldawi, setyo budi kurniawan, hajjar hartini wan jusoh, azimah ismail and hassimi abu hasan.  (2025).  biosorption of hexavalent chromium in aqueous solution by bacillus cereus.  - environmental technology & innovation.  1 - 11. 

jaga sahsiny jaganathan, siti rozaimah sheikh abdullah, jarinah mohd ali, setyo budi kurniawan, suriya vathi subramaniam.  (2025).  state-of-the-art approaches in sago wastewater treatment and resource recovery: towards a circular and sustainable industry.  - journal of environmental chemical engineering.  1 - 18. 

lim yen yen, siti rozaimah sheikh abdullah, muhammad fauzul imron, setyo budi kurniawan.  (2025).  natural-based solution for sewage using hydroponic systems with water hyacinth.  - water.  1 - 23. 

wong yi song, siti rozaimah sheikh abdullah, islam j k elhabil, siti shilatul najwa sharuddin.  (2025).  phyto-polishing of leachate with malaysian native bulrush: pollutant removal and kinetics study.  - water research.  1 - 12. 

osama abrahiem al falahi, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, hind mufeed ewadh, nur 'izzati ismail, muhammad fauzul imron, setyo budi kurniawan.  (2025).  removal of ibuprofen and paracetamol by rhizobacteria from roots of scirpus grossus exposed to a synthetic mix in constructed wetlands .  - water.  1 - 19. 

siti shilatul najwa sharuddin, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, nur ‘izzati ismail.  (2025).  enhancing the yield of biosurfactant production from hydrocarbon-degrading rhizobacteria.  - journal of the indian chemical society.  1 - 13. 

siti shilatul najwa sharuddin, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, nur ‘izzati ismail, azmi fadziyana mansor, islam j.k. elhabil.  (2025).  bioaugmented phytoremediation with biosurfactant producing rhizobacteria for enhanced hydrocarbon removal.  - journal of environmental chemical engineering.  1 - 14. 

junaidah buhari, hassimi abu hasan, siti rozaimah sheikh abdullah, seeralakandapalan sayanthan, masli irwan rosli.  (2025).  aeration influence on synergistic effects of hybrid water hyacinth and moving bed biofilm reactor in polishing low-strength synthetic wastewater.  - process biochemistry.  33 - 40. 

zahraa hasan mutar, israa abdulwahab al-baldawi, siti rozaimah sheikh abdullah.  (2025).  sustainable treatment of palm oil mill effluent and repurposing of sludge as a micronutrient resource.  - journal of king saud university science.  1 - 8. 

jaga sahsiny jaganathan, siti rozaimah sheikh abdullah, salmi nur ain sanusi, nur nadhirah ramli, jahira alias, suriya vathi subramaniam, nurull muna daud, fairuz afiqah buslima, nor sakinah mohd said, junaidah buhari, siti shilatul najwa sharuddin, setyo budi kurniawan.  (2025).  machine learning and explainable artificial intelligence in coagulation–flocculation: a contemporary review.  - journal of environmental chemical engineering.  1 - 18. 

islam j.k. elhabil, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, nur 'izzati ismail, noorashikin md saleh.  (2025).  isolation and identification of rhizobacteria from ludwigia octovalvis for degradation of polyethylene.  - algal research.  1 - 16. 

jaga sahsiny jaganathan, jarinah mohd ali, siti rozaimah sheikh abdullah.  (2025).  unlocking the potential of artificial intelligence in wastewater treatment: innovations, opportunities, and challenges.  - journal of environmental chemical engineering.  1 - 20. 

nur ’izzati ismail, nurull muna daud, siti rozaimah sheikh abdullah, ahmad razi othman, nur nadhirah ramli, israa abdulwahab al-baldawi, islam j k elhabil, hassimi abu hasan.  (2025).  resistant rhizobacteria of native plant for simultaneous iron and aluminum removal from synthetic mining wastewater and its future potential for phytoremediation development.  - process safety and environmental protection.  1 - 13. 

n. marsidi, s. r. s. abdullah, h. a. hasan, a. r. othman, j. ahmad, n. i. ismail.  (2025).  tolerance and survival of native plants exposed to petroleum hydrocarbon-containing sludge: first step in phytoremediation.  - international journal of environmental science and technology.  7701 - 7708. 

zahraa hasan mutar, siti rozaimah sheikh abdullah, israa abdulwahab al-baldawi.  (2025).  flocculating suspended solids in palm oil mill effluent using leucaena leucocephala extract: performance, kinetics and characterization of the recovered sludge.  - clean technologies and environmental policy.  6741 - 6755. 

nurull muna daud, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, noorashikin md salleh, nor sakinah mohd said, nur 'izzati ismail.  (2025).  correlating plant-to-pollutant mass ratio in phytotreating batik industry effluent using actinoscirpus grossus.  - water resources and industry.  1 - 16. 

nur nadhirah ramli, ahmad razi othman, nor sakinah mohd said, jahira alias, siti rozaimah sheikh abdullah, hassimi abu hasan, nur ‘izzati ismail, setyo budi kurniawan.  (2025).  chromium reduction by indigenous bacillus sp. isolate s1: optimal performance, characterization, and pathway.  - international journal of environmental science and technology.  15045 - 15056. 

nur ’izzati ismail, nurull muna daud, siti rozaimah sheikh abdullah, nur farisya hana mohd farikh, ahmad razi othman, setyo budi kurniawan, hassimi abu hasan.  (2025).  kinetics of iron and aluminum biosorption by native isolated rhizobacteria and their potential for future advancement in bioremediation.  - journal of water process engineering.  1 - 11. 

setyo budi kurniawan, azmi ahmad, muhammad fauzul imron, siti rozaimah sheikh abdullah, ahmad razi othman and hassimi abu hasan.  (2025).  achieving a biocircular economy in the aquaculture sector through waste valorization.  - toxics.  1 - 30. 

hassimi abu hasan, nurul farhana mohd rahim, ,jahira alias, jamilah ahmad,nor sakinah mohd said , nur nadhirah ramli, junaidah buhari, siti rozaimah sheikh abdullah, ahmad razi othman, hajjar hartini wan jusoh, hafizan juahir, setyo budi kurniawan.  (2024).  a review on the roles of extracellular polymeric substances (epss) in wastewater treatment: source, mechanism study, bioproducts, limitations, and future challenges.  - water .  1 - 19. 

fairuz afiqah buslima, hassimi abu hasan, siti rozaimah sheikh abdullah, ahmad razi othman.  (2024).  water recovery from domestic wastewater using integrated biofilm-phytoremediation technology: a review.  - journal of water process engineering.  1 - 20. 

jahira alias, hassimi abu hasan, siti rozaimah sheikh abdullah, ahmad razi othman.  (2024).  flocculating activity and kinetic properties of bioflocculant produced by bacillus species for wastewater treatment.  - journal of water process engineering.  1 - 10. 

mohammad mohammad alnawajha, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, setyo budi kurniawan.  (2024).  effectiveness of using water-extracted leucaena leucocephala seeds as a coagulant for turbid water treatment: effects of dosage, ph, mixing speed, mixing time, and settling time.  - biomass conversion and biorefinery.  11203-11216. 

muhammad fauzul imron, wahyu setiawan, trisnadi widyaleksono catur putranto, siti rozaimah sheikh abdullah, setyo budi kurniawan.  (2024).  biosorption of chromium by live and dead cells of bacillus nitratireducens isolated from textile effluent.  - chemosphere.  1-10. 

jamilah ahmad, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, setyo budi kurniawan.  (2024).  effect biomass ratio of ludwigia octovalvis on phytotoxicity of hydrocarbons.  - journal of water process engineering.  1-9. 

s. sayanthan, hassimi abu hasan, siti rozaimah sheikh abdullah.  (2024).  floating aquatic macrophytes in wastewater treatment: toward a circular economy.  - water.  1-32. 

muhammad fauzul imron, wa ode ayu hestianingsi, trisnadi widyaleksono catur putranto, nita citrasari, siti rozaimah sheikh abdullah, hassimi abu hasan, setyo budi kurniawan.  (2024).  effect of the number of cyperus rotundus and medium height on the performance of batch-constructed wetland in treating aquaculture effluent.  - chemosphere.  1-9. 

taskeen reza, nur izzati ismail, zahratul huda mohamad riza, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman.  (2024).  microplastic removal in wastewater treatment plants (wwtps) by natural coagulation: a literature review.  - toxics.  1-17. 

jamilah ahmad, nuratiqah marsidi, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, nur izzati ismail, setyo budi kurniawan.  (2024).  integrating phytoremediation and mycoremediation with biosurfactant-producing fungi for hydrocarbon removal and the potential production of secondary resources.  - chemosphere.  1-24. 

siti shilatul najwa sharuddin, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, nur ‘izzati ismail.  (2024).  rhizobacterial-assisted phytoremediation for accelerated petroleum-hydrocarbon removal in crude-oil sludge.  - science of the total environment.  1 - 14. 

muhammad fauzul imron, abiyyu armijn firman firdaus, zhiella octabriani flowerainsyah, dzikro rosyidah, nurina fitriani, setyo budi kurniawan, siti rozaimah sheikh abdullah, hassimi abu hasan, yudha gusti wibowo.  (2023).  phytotechnology for domestic wastewater treatment: performance of pistia stratiotes in eradicating pollutants and future prospects.  - journal of water process engineering.  1-8. 

nur nadhirahramli, ahmad razi othman, setyo budikurniawan, siti rozaimah sheikh abdullah, hassimi abu hasan.  (2023).  metabolic pathway of cr(vi) reduction by bacteria: a review.  - microbiological research.  1-14. 

nor sakinah mohd said, siti rozaimah sheikh abdullah, nur izzati ismail, hassimi abu hasan, ahmad razi othman.  (2023).  integrating treatment processes of coffee processing mill effluent for reclamation of secondary resources.  - journal of cleaner production.  1-18. 

amina a. owodunni, suzylawati ismail, setyo budi kurniawan, azmi ahmad, muhammad fauzul imron, siti rozaimah sheikh abdullah.  (2023).  a review on revolutionary technique for phosphate removal in wastewater using green coagulant.  - journal of water process engineering.  1-12. 

benedict terkula iber, donald torsabo, che engku noramalina che engku chik, fachrul wahab, siti rozaimah sheikh abdullah, hassimi abu hassan, nor azman kasan.  (2023).  response surface methodology (rsm) approach to optimization of coagulation-flocculation of aquaculture wastewater treatment using chitosan from carapace of giant freshwater prawn macrobrachium rosenbergii.  - polymers.  1-27. 

benedict terkula iber, donald torsabo, che engku noramalina che engku chik, fachrul wahab, siti rozaimah sheikh abdullah, hassimi abu hassan and nor azman kasan.  (2023).  a study on the effects of interfering with the conventional sequential protocol for chemical isolation and characterization of chitosan from biowaste of giant freshwater prawn macrobrachium rosenbergii.  - heliyon.  1-19. 

benedict terkula iber, donald torsabo, che engku noramalina che engku chik, fachrul wahab, siti rozaimah sheikh abdullah, hassimi abu hasan, nor azman kasan.  (2023).  optimization of chitosan coagulant from dry legs of giant freshwater prawn, macrobrachium rosenbergii in aquaculture wastewater treatment using response surface methodology (rsm).  - journal of environmental chemical engineering.  1-16. 

israa abdulwahab al-baldawi, safaa rasheed yasin, salwa shamran jasim, siti rozaimah sheikh abdullah, asia fadhile almansoory, nur izzati ismail.  (2023).  removal kinetics of organic carbon from palm oil mill effluent by native duckweeds and its potential as a biofertilizer..  - journal of water process engineering.  1-10. 

setyo budi kurniawan, muhammad fauzul imron, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman.  (2023).  coagulation-flocculation of aquaculture effluent using biobased flocculant: from artificial to real wastewater optimization by response surface methodology.  - journal of water processing engineering.  1-20. 

nurull muna daud, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, nur zzati ismail.  (2023).  coagulation-flocculation treatment for batik effluent as a baseline study for the upcoming application of green coagulants/flocculants towards sustainable batik industry.  - heliyon.  1-17. 

junaidah buhari, hassimi abu hasan, setyo budi kurniawan, siti rozaimah sheikh abdullah, and ahmad razi othman.  (2023).  future and challenges of co-biofilm treatment on ammonia and bisphenol a removal from wastewater.  - journal of water process engineering.  1-17. 

jamilah ahmad, siti rozaimah sheikh abdullah, hassimi abu hasan, israa abdulwahab al-baldawi, nuratiqah marsidi, nur izzati ismail.  (2023).  comparative performance of subsurface and free-surface planted beds for polishing real recycled paper effluent: influence of biomass ratio to pollutant.  - journal of water process engineering.  1-10. 

radhiatul atiqah ramli shah, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, nur izzati ismail.  (2023).  prospective plants as biocoagulant-flocculants for removal of total suspended solids in coffee effluent treatment.  - chemical engineering research and design.  282-295. 

safa yaseen tahaa, asia fadhile almansoorya, israa abdulwahab al-baldawi, siti rozaimah sheikh abdullah, nur izzati ismail, mohammad hazaimeh, siti shilatul najwa sharuddin.  (2023).  hybrid constructed wetland for treatment of power plant effluent polluted with hydrocarbons.  - journal of water process engineering.  1-10. 

ipung fitri purwanti, siti rozaimah sheikh abdullah, ainon hamzah, mushrifah idris, hassan basri, mohd talib latif, muhammad mukhlisin, setyo budi kurniawan, muhammad fauzul imron.  (2023).  maximizing diesel removal from contaminated sand using scirpus mucronatus and assessment of rhizobacteria addition effect.  - heliyon.  1-12. 

nurina fitriani, ledy theresia, timothy tjahja nugraha o'marga, setyo budi kurniawan, agus supriyanto, siti rozaimah sheikh abdullah, luuk c. rietveld.  (2023).  performance of a modified and intermittently operated slow sand filter with two different mediums in removing turbidity, ammonia, and phosphate with varying acclimatization periods.  - heliyon.  1-11. 

azmi ahmad, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, nur izzati ismail.  (2022).  potential of local plant leaves as natural coagulant for turbidity removal.  - environmental science and pollution research.  2579-2587. 

siti nur hatika abu bakar, hassimi abu hasan, abdul wahab mohammad, siti rozaimah sheikh abdullah, mohd hafizuddin muhamad.  (2022).  interactions between operating parameters of moving bed biofilm reactors in treating palm oil mill effluent.  - process safety and environmental protection.  567-575. 

setyo budi kurniawan, muhammad fauzul imron, che engku noramalina che engku chik, amina adedoja owodunni, azmi ahmad, mohammad alnawajha, nurul farhana mohd rahim, siti rozaimah sheikh abdullah, nor azman kasan, suzylawati ismail, ahmad razi othman, and h.  (2022).  what compound inside biocoagulants/bioflocculants is contributing the most to the coagulation and flocculation processes?.  - science of the total environment.  1-25. 

azmi ahmad, setyo budi kurniawan, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman.  (2022).  contaminants of emerging concern (cecs) in aquaculture effluent: insight into breeding and rearing activities, alarming impacts, regulations, performance of wastewater treatment unit and future approa.  - chemosphere.  1-15. 

azmi ahmad, setyo budi kurniawan, jamilah ahmad, jahira alias, nuratiqah marsidi, nor sakinah mohd said, aiman syafiqah, junaidah buhari, nur nadhirah ramli, nurul farhana mohd rahim, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman.  (2022).  dosage-based application versus ratio-based approach for metal- and plant-based coagulants in wastewater treatment: merits, limitations and applicability.  - journal of cleaner production.  1-12. 

azmi ahmad, setyo budi kurniawan, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman.  (2022).  exploring extraction methods for plant-based coagulants and their future approaches.  - science of the total environment.  1-11. 

bieby voijant tangahu, siti rozaimah sheikh abdullah, hassan basri, mushrifah idris, nurina anuar, muhammad mukhlisin.  (2022).  lead (pb) removal from contaminated water using constructed wetland planted with scirpus grossus: optimization using response surface methodology (rsm) and assessment of rhizobacterial addition.  - chemosphere.  1-11. 

nurul fakriah che hashim, hidayah manan, victor tosin okomoda, mhd ikhwanuddin, waiho khor, siti rozaimah sheikh abdullah, nor azman kasan.  (2022).  inoculation of bioflocculant-producing bacteria for enhanced biofloc formation and pond preparation: effect on water quality and bacterial community.  - aquaculture research.  1602-1607. 

fazli rahim, siti rozaimah sheikh abdullah, hassimi abu hassan, setyo budi kurniawan, alias mamat, kamarul arifin yusof and khairil irwan ambak.  (2022).  a feasibility study for the treatment of 1,2 dichloroethane contaminated groundwater using reedbed system and assessment of its natural attenuation.  - science of the total environment.  1-9. 

nurull muna daud, siti rozaimah sheikh abdullah, hassimi abu hasan, nur izzati ismail, yeny dhokikah.  (2022).  integrated physical-biological treatment system for batik industry wastewater: a review on process selection.  - science of the total environment.  1-17. 

enas abdulqader saeed almaamary, siti rozaimah sheikh abdullah, nur izzati ismail, mushrifah idris, setyo budi kurniawan, muhammad fauzul imron.  (2022).  comparative performance of scirpus grossus for phytotreating mixed dye wastewater in batch and continuous pilot sub-surface constructed wetland systems.  - journal of environmental management.  1-12. 

setyo budi kurniawan, muhammad fauzul imron, siti rozaimah sheikh abdullah, ahmad razi othman, ipung fitri purwanti & hassimi abu hasan.  (2022).  treatment of aquaculture effluent using bacteria-based bioflocculant produced by serratia marcescens.  - journal of water process engineering.  1-8. 

yeow eu lun, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, setyo budi kurniawan, muhammad fauzul imron, osama abrahiem al falahi, nor sakinah mohd said, siti shilatul najwa sharuddin, nur izzati ismail.  (2022).  integrated emergent-floating planted reactor for textile effluent: removal potential, optimization of operational conditions and potential forthcoming waste management strategy.  - journal of environmental management.  1-14. 

junaidah buhari, hassimi abu hasan, nurul farhana mohd rahim, setyo budi kurniawan, siti rozaimah sheikh abdullah, ahmad razi othman.  (2022).  unveiling the optimal ammonia-oxidising bacterial consortium for polishing low ammonia-contaminated wastewater.  - journal of water process engineering.  1-9. 

ahmad razi othman, nur shuhada ismail, siti rozaimah sheikh abdullah, hassimi abu hasan, setyo budi kurniawan, siti shilatul najwa sharuddin, nur izzati ismail.  (2022).  potential of indigenous biosurfactant-producing fungi from real crude oil sludge in.  - journal of environmental chemical engineering.  1-12. 

jahira alias, hassimi abu hasan, siti rozaimah sheikh abdullah, ahmad razi othman.  (2022).  properties of bioflocculant-producing bacteria for high flocculating activity efficiency.  - environmental technology & innovation.  1-10. 

setyo budi kurniawan, muhammad fauzul imron, lukasz slugocki, kacper nowakowski, azmi ahmad, dhuroton najiya, siti rozaimah sheikh abdullah, ahmad razi othman, ipung fitri purwanti, hassimi abu hasan.  (2022).  assessing the effect of multiple variables on the production of bioflocculant by serratia marcescens flocculating activity, kinetics, toxicity, and flocculation mechanism.  - science of the total environment.  1-12. 

maryam zulkifli, hassimi abu hasan, siti rozaimah sheikh abdullah, mohd hafizuddin muhamad.  (2022).  a review of ammonia removal using a biofilm-based reactor and its challenges.  - journal of environmental management.  1-24. 

hassimi abu hasan, dheenesh sai annanda shanmugam, siti rozaimah sheikh abdullah, mohd hafizuddin muhamad, and setyo budi kurniawan.  (2022).  potential of using dual-media biofilm reactors as a real coffee industrial effluent pre-treatment.  - water.  1-19. 

setyo budi kurniawan, azmi ahmad, muhammad fauzul imron, siti rozaimah sheikh abdullah, ahmad razi othman and hassimi abu hasan.  (2022).  potential of microalgae cultivation using nutrient-rich wastewater and harvesting performance by biocoagulants/bioflocculants: mechanism, multi-conversion of biomass into valuable products, and future.  - journal of cleaner production.  1-24. 

mohammad mohammad alnawajha, setyo budi kurniawan, muhammad fauzul imron, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman.  (2022).  plant-based coagulants/flocculants characteristics, mechanisms, possible utilization in treating aquaculture effluent and benefiting from the recovered nutrients.  - environmental science and pollution research.  58430-58453. 

osama abrahiem al falahi, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, hind mufeed ewadh, setyo budi kurniawan, muhammad fauzul imron.  (2022).  occurrence of pharmaceuticals and personal care products in domestic wastewater, available treatment technologies, and potential treatment using constructed wetland: a review.  - process safety and environmental protection.  1067-1088. 

benedict terkula iber, donald torsabo, che engku noramalina che engku chik, fachrul wahab, siti rozaimah sheikh abdullah, hassimi abu hassan, nor azman kasan.  (2022).  the impact of re-ordering the conventional chemical steps on the production and characterization of natural chitosan from biowaste of black tiger shrimp, penaeus monodon.  - journal of sea research.  1-15. 

osama abrahiem al falahi, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, hind mufeed ewadh, israa abduwahab al-baldawi, siti shilatul najwa sharuddin, setyo budi kurniawan, nur izzati ismail.  (2022).  elimination of mixed ibuprofen and paracetamol from spiked domestic wastewater via a pilot continuous aerated sub-surface constructed wetland system.  - journal of water process engineering.  1-16. 

kiki dwi wulandari, januarti jaya ekaputri, triwulan, setyo budi kurniawan, widya emilia primaningtyas, siti rozaimah sheikh abdullah, nur izzati ismail, muhammad fauzul imron.  (2021).  effect of microbe addition on the properties and surface morphology of fly ash-based geopolymer paste.  - journal of building engineering.  1-7. 

setyo budi kurniawan, muhammad fauzul imron, nur izzati ismail, siti rozaimah sheikh abdullah.  (2021).  current state of marine plastic pollution and its technology for more eminent evidence: a review.  - journal of cleaner production.  1-12. 

nadya hussin al sbani, siti rozaimah sheikh abdullah, mushrifah idris, hassimi abu hasan, mohd izuan effendi halmi, omar hamed jehawi,nur izzati ismail.  (2021).  pah-degrading rhizobacteria of lepironia articulata for phytoremediation enhancement.  - journal of water process engineering.  1-11. 

asia fadhile almansoory, mushrifah idris, siti rozaimah sheikh abdullah, nurina anuar, setyo budi kurniawan.  (2021).  response and capability of scirpus mucronatus (l.) in phytotreating petrol-contaminated soil.  - chemosphere.  1-9. 

nor sakinah mohd said, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, nur izzati ismail.  (2021).  endurance of phragmites karka in removing colour and suspended solids from industrial coffee processing effluents in a continuous reed bed system.  - journal of water process engineering.  1-7. 

katharina oginawati, septian hadi susetyo, fiona aulia rosalyn, setyo budi kurniawan & siti rozaimah sheikh abdullah.  (2021).  risk analysis of inhaled hexavalent chromium (cr6+) exposure on blacksmiths from industrial area.  - environmental science and pollution research.  14000-14008. 

siti nur hatika abu bakar, hassimi,abu hasan, siti rozaimah sheikh abdullah, nor azman kasan, mohd hafizuddin,muhamad, setyo budi kurniawan.  (2021).  a review of the production process of bacteria-based polymeric flocculants.  - journal of water process engineering.  1-13. 

ainil farhan mohd udaiyappan, hassimi abu hasan, mohd sobri takriff, siti rozaimah sheikh abdullah, nazlina haiza mohd yasin, bin ji.  (2021).  cultivation and application of scenedesmus sp. strain ukm9 in palm oil mill effluent treatment for enhanced nutrient removal.  - journal of cleaner production.  1-10. 

nurul nadiah zulkarnain, nurina anuar, norliza abd. rahman, siti rozaimah sheikh abdullah, muhammad nazir alias, mashitoh yaacob, zhongren ma, and gongtao ding.  (2021).  cell-based influenza vaccine: current production, halal status assessment, and recommendations towards islamic-compliant manufacturing.  - human vaccines & immunotherapeutics.  2158-2168. 

setyo budi kurniawan, siti rozaimah sheikh abdullah, muhammad fauzul imron, azmi ahmad, nor sakinah mohd said, nurul farhana mohd rahim, mohammad mohammad alnawajha, hassimi abu hasan, ahmad razi othman, ipung fitri purwanti.  (2021).  potential of valuable materials recovery from aquaculture wastewater: an introduction to resource reclamation.  - aquaculture research.  2954-2962. 

azmi ahmad, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman & nur izzati ismail.  (2021).  aquaculture industry: supply and demand, best practices, effluent and its current issues and treatment technology.  - journal of environmental management.  1-14. 

ahmad razi othman, hassimi abu hasan, mohd hafizzudin mohamad, nur izzati ismail, siti rozaimah sheikh abdullah.  (2021).  microbial degradation of microplastics by enzymatic processes: a review.  - environmental chemistry letters.  3057-3073. 

chin sze yee, victor tosin okomoda, fakriah hashim, khor waiho, siti rozaimah sheikh abdullah, alamanjo cosmas, hassimi abu hasan, emienour muzalina mustafa, and nor azman kasan.  (2021).  marine microalgae co-cultured with floc-forming bacterium: insight into growth and lipid productivity.  - peerj.  1-18. 

maryam aqilah norhan, siti rozaimah sheikh abdullah, hassimi abu hasan & nur izzati ismail.  (2021).  a constructed wetland system for bio-polishing palm oil mill effluent and its future research opportunities.  - journal of water process engineering.  1-8. 

ibrahim alkali allamin, nur adeela yasid, siti rozaimah sheikh abdullah, mohd izuan effendi halmi and mohd yunus shukor.  (2021).  phyto-tolerance degradation of hydrocarbons and accumulation of heavy metals by of cajanus cajan (pigeon pea) in petroleum-oily-sludge-contaminated soil.  - agronomy.  1-17. 

setyo budi kurniawan, azmi ahmad, nor sakinah mohd said, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, ipung fitri purwanti, muhammad fauzul imron.  (2021).  macrophytes as wastewater treatment agent: nutrient uptake and potential of produced biomass utilization toward circular economy initiative.  - science of the total environment.  1-14. 

hassimi abu hasan, jahira alias, farahanim nabila arbain, siti rozaimah sheikh abdullah, nor azman kasan, mohd hafizuddin muhamad.  (2021).  reusing sago mill effluent as a substrate for bio-based polymeric flocculant fermentation: optimisation of operational conditions.  - environmental technology & innovation.  1-11. 

setyo budi kurniawan, siti rozaimah sheikh abdullah, ahmad razi othman, ipung fitri purwanti, muhammad fauzul imron, nur izzati ismail, azmi ahmad, hassimi abu hasan.  (2021).  isolation and characterization of bioflocculant-producing bacteria from aquaculture effluent and its performance in treating high turbid water.  - journal of water process engineering.  1-10. 

osama abrahiem al falahia, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, hind mufeed ewadh, israa abdulwahab al-baldawi, setyo budi kurniawan, muhammad fauzul imron, nur izzati ismail.  (2021).  simultaneous removal of ibuprofen, organic material, and nutrients from domestic wastewater through a pilot-scale vertical sub-surface flow constructed wetland with aeration system..  - journal of water process engineering.  1-13. 

setyo budi kurniawan, nor sakinah mohd said, muhammad fauzul imron, siti rozaimah sheikh abdullah.  (2021).  microplastic pollution in the environment: insights into emerging sources and potential threats.  - environmental technology & innovation.  1-14. 

nor sakinah mohd said, setyo budi kurniawan, siti rozaimah sheikh abdullah, hassimi abu hassan, ahmad razi othman, nur izzati ismail.  (2021).  competence of lepironia articulata in eradicating chemical oxygen demand and ammoniacal nitrogen in coffee processing mill effluent and its potential as green straw.  - science of the total environment.  1-8. 

mohd hafizuddin muhamad, siti rozaimah sheikh abdullah, hassimi abu hasan, siti nur hatika abu bakar, setyo budi kurniawan, nur izzati ismail.  (2021).  a hybrid treatment system for water contaminated with pentachlorophenol: removal performance and bacterial community composition.  - journal of water process engineering.  1-14. 

israa abdulwahab al-baldawi, ahmed a. mohammed, zahraa hasan mutar, siti rozaimah sheikh abdullah, salwa shamran jasim, asia fadhile almansoory, nur izzati ismail.  (2021).  application of phytotechnology in alleviating pharmaceuticals and personal care products (ppcps) in wastewater - source, impacts, treatment, mechanisms, fate, and swot analysis.  - journal of cleaner production.  1-28. 

azmi ahmad, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, nur izzati ismail.  (2021).  plant-based versus metal-based coagulants in aquaculture wastewater treatment: effect of mass ratio and settling time.  - journal of water process engineering.  1-8. 

setyo budi kurniawan, azmi ahmad, nurul farhana mohd rahim, nor sakinah mohd said, mohammad mohammad alnawajha, muhammad fauzul imron, siti rozaimah sheikh abdullah, ahmad razi othman, nur izzati ismail, hassimi abu hasan.  (2021).  aquaculture in malaysia: water-related environmental challenges and opportunities for cleaner production.  - environmental technology & innovation.  1-18. 

muhammad fauzul imron, alifia rizki ananta, izzati saumi ramadhani, setyo budi kurniawan, siti rozaimah sheikh abdullah.  (2021).  potential of lemna minor for removal of methylene blue in aqueous solution: kinetics, adsorption mechanism, and degradation pathway.  - environmental technology & innovation.  1-16. 

siti shilatul najwa sharuddin, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, nur izzati ismail.  (2021).  potential bifunctional rhizobacteria from crude oil sludge for hydrocarbon degradation and biosurfactant production.  - process safety and environmental protection.  108-121. 

omar hamed jehawi, siti rozaimah sheikh abdullah, setyo budi kurniawan, mushrifah idris, nur izzati ismail, nadya hussin al sbani, mushrifah idris mohd hafizuddin muhamad, hassimi abu hasan.  (2020).  performance of pilot hybrid reed bed constructed with aeration system on nutrient removal for domestic wastewater treatment.  - environmental technology & innovation.  1-9. 

siti nur hatika abu bakar, hassimi abu hasan, abdul wahab mohammad, siti rozaimah sheikh abdullah, rahmat ngteni, khairul muis mohamed yusof.  (2020).  performance of a laboratory-scale moving bed biofilm reactor (mbbr) and its microbial diversity in palm oil mill effluent (pome) treatment.  - process safety and environmental protection.  325-335. 

daniah ali hassoon nash, siti rozaimah sheikh abdullah, hassimi abu hasan, mushrifah idris, ahmad razi othman, israa abdulwahab al-baldawi, nur izzati ismail.  (2020).  utilisation of an aquatic plant (scirpus grossus) for phytoremediation of real sago mill effluent.  - environmental technology and innovation.  1-11. 

nadya hussin al sbani, siti rozaimah sheikh abdullah, mushrifah idris, hassimi abu hasan, israa abdulwahab al-baldawi, omar hamed jehawi & nur izzati ismail.  (2020).  remediation of pahs-contaminated water and sand by tropical plant (eleocharis ochrostachys) through sub-surface flow system.  - environmental technology and innovation.  1-9. 

azlin abd kadir, siti rozaimah sheikh abdullah, babul airianah othman, hassimi abu hasan, ahmad razi othman, muhammad fauzul imron, setyo budi kurniawan, nur izzati ismail.  (2020).  dual function of lemna minor and azolla pinnata as phytoremediator for palm oil mill effluent and as feedstock.  - chemosphere.  1-13. 

mohd hafizuddin muhamad, siti rozaimah sheikh abdullah, hassimi abu hasan, siti nur hatika abu bakar.  (2020).  multimedia-sequencing batch biofilm reactor in treating recycled paper mill effluent containing high level of pentachlorophenol: long-term performance, mechanism and kinetic studies.  - journal of water process engineering.  1-17. 

israa abdul wahab al-baldawi, siti rozaimah sheikh abdullah, asia fadhile almansoory, nur izzati ismail, hassimi abu hasan, nurina anuar.  (2020).  role of salvinia molesta in biodecolorization of methyl orange-dye from water.  - scientific reports.  1-9. 

siti nur hatika abu bakar, hassimi abu hasan, abdul wahab mohammad, siti rozaimah sheikh abdullah, rahmat ngteni, khairul muis mohamed yusof.  (2020).  erratum to `performance of a laboratory-scale moving bed biofilm reactor (mbbr) and its microbial diversity in palm oil mill effluent (pome) treatment` [process saf. environ. prot. 142 (2020) 325-335].  - process safety and environmental protection.  1. 

hassimi abu hasan, ezril hafiz razali, mohd hafizuddin muhamad, and siti rozaimah sheikh abdullah.  (2020).  bioflocculant production using palm oil mill and sago mill effluent as a fermentation feedstock: characterization and mechanism of flocculation.  - journal of environmental management.  1-8. 

fayeq abdel hafez al-ajalin, mushrifah idris, siti rozaimah sheikh abdullah, setyo budi kurniawan and muhammad fauzul imron.  (2020).  effect of wastewater depth to the performance of short-term batching-experiments horizontal flow constructed wetland system.  - environmental technology and innovation.  1-10. 

fayeq abdel hafez al-ajalin, mushrifah idris, siti rozaimah sheikh abdullah, setyo budi kurniawan, muhammad fauzul imron.  (2020).  evaluation of short-term pilot reed bed performance for real domestic wastewater treatment.  - environmental technology and innovation.  1-12. 

siti rozaimah sheikh abdullaha, israa abdulwahab al-baldawi, asia fadhile almansoory, ipung fitri purwanti, nadya hussin al-sbani & siti shilatul najwa sharuddin.  (2020).  plant-assisted remediation of hydrocarbons in water and soil: application, mechanisms, challenges and opportunities.  - chemosphere.  1-19. 

md ekhlasur rahman, mohd izuan effendi halmi, mohd yusoff abd samad, md kamal uddin, khairil mahmud, mohd yunus abd shukor, siti rozaimah sheikh abdullah, s m shamsuzzaman.  (2020).  design, operation and optimization of constructed wetland for removal of pollutant.  - international journal of environmental research and public health.  1-40. 

setyo budi kurniawan, muhammad fauzul imron, nor sakinah said, nur izzati ismail, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, ipung fitri purwanti.  (2020).  challenges and opportunities of biocoagulant/bioflocculant application for drinking water and wastewater treatment and its potential for sludge recovery.  - international journal of environmental research and public health.  1-33. 

nurul nadiah zulkarnain, nurina anuar, nor azfa johari, siti rozaimah sheikh abdullah, ahmad razi othman.  (2020).  cytotoxicity evaluation of ketoprofen found in pharmaceutical wastewater on hek 293 cell growth and metabolism.  - environmental toxicology and pharmacology.  1-7. 

ainil farhan mohd udaiyappan, hassimi abu hasan, mohd sobri takriff, siti rozaimah sheikh abdullah, toshinari maeda, nurul asyifah mustapha, nazlina haiza mohd yasin, noor irma nazashida mohd hakimi.  (2020).  microalgae-bacteria interaction in palm oil mill effluent treatment.  - journal of water process engineering.  1-12. 

ibrahim alkali allamin, mohd izuan effendi halmi, nur adeela yasid, siti aqlima ahmad, siti rozaimah sheikh abdullah & yunus shukor.  (2020).  rhizodegradation of petroleum oily sludge contaminated soil using cajanus cajan increases the diversity of soil microbial community.  - scientific reports.  1-11. 

nur izzati ismail, siti rozaimah sheikh abdullah, mushrifah idris, setyo budi kurniawan, mohd izuan effendi halmi, nadya hussin al sbani, omar hamed jehawi & hassimi abu hasan.  (2020).  applying rhizobacteria consortium for the enhancement of scirpus grossus growth and phytoaccumulation of fe and al in pilot constructed wetlands..  - journal of environmental management.  1-12. 

muhammad fauzul imron, setyo budi kurniawan, nur izzati ismail & siti rozaimah sheikh abdullah.  (2020).  future challenges in diesel biodegradation by bacteria isolates: a review.  - journal of cleaner production.  1-18. 

nor sakinah mohd said, siti rozaimah sheikh abdullah, nur izzati ismail, hassimi abu hasan, ahmad razi othman.  (2020).  phytoremediation of real coffee industry effluent through a continuous two-stage constructed wetland system.  - environmental technology & innovation.  1-12. 

azianabiha a. halip khalid, zahira yaakob, siti rozaimah sheikh abdullah, mohd sobri takriff.  (2019).  analysis of the elemental composition and uptake mechanism of chlorella sorokiniana for nutrient removal in agricultural wastewater under optimized response surface methodology (rsm) conditions.  - journal of cleaner production.  . 

z. mat nawi, s.k. kamarudin, s.r. sheikh abdullah, s.s. lam.  (2019).  the potential of exhaust waste heat recovery (whr) from marine diesel engines via organic rankine cycle.  - energy.  . 

n.h. kasmuri1, s. k. kamarudin, s. r. s. abdullah, h. a. hasan, a. md. som.  (2019).  integrated advanced nonlinear neural network-simulink controlsystem for production of bio-methanol from sugar cane bagasse viapyrolysis.  - energy.  . 

ipung fitri purwanti, setyo budi kurniawan, nur izzati ismail, muhammad fauzul imron, siti rozaimah sheikh abdullah.  (2019).  aluminium removal and recovery from wastewater and soil using isolated indigenous bacteria.  - journal of environmental management.  1-11. 

harmin sulistiyaning titah, ipung fitri purwanti, bieby voijant tangahu, setyo budi kurniawan, muhammad fauzul imron, siti rozaimah sheikh abdullah & nur izzati ismail.  (2019).  kinetics of aluminium removal by locally isolated brochothrix thermosphacta and vibrio alginolyticus.  - journal of environmental management.  194-200. 

fathiyyah mohd zainudin, hassimi abu hasan, siti rozaimah sheikh abdullah.  (2018).  an overview of the technology used to remove trihalomethane (thm), trihalomethane precursors, and trihalomethane formation potential (thmfp) from water and wastewater.  - journal of industrial and engineering chemistry.  1-14. 

azianabiha a halip khalida, zahira yaakob, siti rozaimah sheikhabdullah, mohd sobritakriff.  (2018).  growth improvement and metabolic profiling of native and commercial chlorella sorokiniana strains acclimatized in recycled agricultural wastewater.  - bioresource technology.  930-939. 

siti nur hatika abu bakar, hassimi abu hasan, abdul wahab mohammad, siti rozaimah sheikh abdullah, teow yeit haan, rahmat ngteni and khairul muis mohamed.  (2018).  a review of moving-bed biofilm reactor technology for palm oil mill effluent treatment.  - journal of cleaner production.  1532-1545. 

nurull muna daud, siti rozaimah sheikh abdullah, hassimi abu hasan.  (2018).  response surface methodological analysis for the optimization of acid catalyzed transesterification biodiesel wastewater pretreatment using coagulation flocculation process.  - process safety and environmental protection.  184-192. 

asia fadhile almansoory, mushrifah idris, siti rozaimah sheikh abdullah and nurina anuar.  (2017).  phytoremediation of contaminated soils containing gasoline using ludwigia octovalvis (jacq.) in greenhouse pots.  - environmental science and pollution research.  11998-12008. 

israa abdul wahab al-baldawi, siti rozaimah sheikh abdullah, nurina anuar & mushrifah idris.  (2017).  bioaugmentation for the enhancement of hydrocarbon phytoremediation by rhizobacteria consortium in pilot horizontal subsurface flow constructed wetlands.  - international journal of environmental science and technology.  75-84. 

asia fadhile almansoory, hassimi abu hasan, mushrifah idris, siti rozaimah sheikh abdullah, nurina anuar, & el mubarak musa tibin.  (2017).  biosurfactant production by the hydrocarbon-degrading bacteria (hdb) serratia marcescens: optimization using central composite design (ccd).  - journal of industrial and engineering chemistry.  272-280. 

n.h. kasmuri, s.k. kamarudin, s.r.s. abdullah, h.a. hasan, a.md. som.  (2017).  process system engineering aspect of bio-alcohol fuel production from biomass via pyrolysis: an overview.  - renewable and sustainable energy reviews.  914-923. 

nadya hussin al-sbani, siti rozaimah sheikh abdullah, mushrifah idris, hassimi abu hasan, omar hamed jehawi & nur izzati ismail.  (2016).  sub-surface flow system for pahs removal in water using lepironia articulate under greenhouse conditions.  - ecological engineering.  1-8. 

hassimi abu hasan, siti rozaimah sheikh abdullah, ali waheid nakemish al-attabi, daniah ali hassoon nash, nurina anuar, norliza abd. rahman, harmin sulistiyaning titah.  (2016).  removal of ibuprofen, ketoprofen, cod and nitrogen compounds from pharmaceutical wastewater using aerobic suspension-sequencing batch reactor (assbr).  - separation and purification technology.  215-221. 

hassimi abu hasan, siti rozaimah sheikh abdullah, noorhisham tan kofli, shy jay yeoh.  (2016).  interaction of environmental factors on simultaneous biosorption of lead and manganese ions by locally isolated bacillus cereus.  - journal of industrial and engineering chemistry.  295-305. 

salmi nur ain sanusi, mohd izuan effendi halmi, siti rozaimah sheikh abdullah, hassimi abu hassan, firdaus mohamad hamzah & mushrifah idris.  (2016).  comparative process optimization of pilot scale total petroleum hydrocarbon (tph) degradation by paspalum scrobiculatum l. hack using response surface methodology (rsm) and artificial neural network.  - ecological engineering.  524-534. 

said m., ahmad a., mohammad a.w., nor m.t.m., sheikh abdullah s.r..  (2015).  blocking mechanism of pes membrane during ultrafiltration of pome.  - journal of industrial and engineering chemistry.  182-188. 

mohd hafizuddin muhamad, siti rozaimah sheikh abdullah, hassimi abu hasan and reehan adne abd. rahim.  (2015).  comparison of the efficiencies of attached- versus suspended-growth sbr systems in the treatment of recycled paper mill wastewater.  - journal of environmental management.  115-124. 

hassimi abu hasan, siti rozaimah sheikh abdullah, siti kartom kamarudin and noorhisham tan kofli.  (2015).  effective curves of completing simultaneous ammonium and manganese removal in polluted water using a biological aerated filter.  - journal of industrial and engineering chemistry.  153-159. 

asia fadhile almansoory, hassimi abu hasan, mushrifah idris, siti rozaimah sheikh abdullah and nurina anuar.  (2015).  potential application of a biosurfactant in phytoremediation technology for treatment of gasoline-contaminated soil.  - ecological engineering.  113-120. 

israa abdulwahab albaldawi, siti rozaimah sheikh abdullah, fatihah suja, nurina anuar & mushrifah idris.  (2015).  phytodegradation of total petroleum hydrocarbon (tph) in diesel-contaminated water using scirpus grossus.  - ecological engineering.  463-473. 

nurull muna daud, siti rozaimah sheikh abdullah, hassimi abu hasan & zahira yaakob.  (2015).  production of biodiesel and its wastewater treatment technologies: a review.  - process safety and environmental protection.  487-508. 

al-baldawi i.a.w., sheikh abdullah s.r., abu hasan h., suja f., anuar n., mushrifah i..  (2014).  optimized conditions for phytoremediation of diesel by scirpus grossus in horizontal subsurface flow constructed wetlands (hsfcws) using response surface methodology.  - journal of environmental management.  152 - 159. 

nurleyna yunus, jamaliah md jahim, nurina anuar, siti rozaimah s. abdullah, norhisham t. kofli.  (2014).  batch fermentative hydrogen production utilising sago (metroxylon sp.) starch processing effluent by enriched sago sludge consortia.  - international journal of hydrogen energy.  19937-19946. 

israa abdulwahab albaldawi, siti rozaimah sheikh abdullah, hassimi abu hasan, fatihah suja, nurina anuar & mushrifah idris.  (2014).  optimized conditions for phytoremediation of diesel by scirpus grossus in horizontal subsurface flow constructed wetlands using (hsfcws) response surface methodology.  - journal of environmental management.  140:152-159. 

hassimi abu hasan, siti rozaimah sheikh abdullah, siti kartom kamarudin, noorhisham tan kofli and nurina anuar.  (2014).  kinetic evaluation of simultaneous cod, ammonia and manganese removal from drinking water using a biological aerated filter system.  - separation and purification technology.  130:56-64. 

israa abdulwahab al-baldawi, siti rozaimah sheikh abdullah, fatihah suja, nurina anuar, idris mushrifah.  (2013).  effect of aeration on hydrocarbon phytoremediation capability in pilot sub-surface flow constructed wetland operation.  - ecological engineering.  61PA:496-500. 

israa abdul wahab al-baldawi, siti rozaimah sheikh abdullah, fatihah suja, nurina anuar, idris mushrifah.  (2013).  comparative performance of free surface and sub-surface flow systems in the phytoremediation of hydrocarbons using scirpus grossus.  - journal of environmental management.  130:324-330. 

israa abdulwahab albaldawi, siti rozaimah sheikh abdullah, nurina anuar, fatihah suja, mushrifah idris.  (2013).  performance assessment of pilot horizontal sub-surface flow constructed wetlands for removal of diesel from wastewater by scirpus grossus.  - water science and technology.  68(10):2271-2278. 

hassimi abu hasan, siti rozaimah sheikh abdullah, siti kartom kamarudin, noorhisham tan kofli, nurina anuar.  (2013).  simultaneous nh4+-n and mn2+ removal from drinking water using a biological aerated filter system: effects of different aeration rates.  - separation and purification technology.  118:547-556. 

harmin sulistiyaning titah, siti rozaimah sheikh abdullah, idris mushrifah, nurina anuar, hassan basri, muhammad mukhlisin.  (2013).  effect of applying rhizobacteria and fertilizer on the growth of ludwigia octovalvis for arsenic uptake and accumulation in phytoremediation.  - ecological engineering.  58:303-313. 

wan hasnidah wan osman, siti rozaimah sheikh abdullah, abu bakar mohamad, abdul amir h. kadhum & rakmi abd rahman.  (2013).  simultaneous removal of aox and cod from real recycled paper wastewater using gac-sbbr.  - journal of environmental management.  121:80-86. 

mohd hafizuddin muhamad, siti rozaimah sheikh abdullah, abu bakar mohamad, rakmi abdul rahman and abdul amir hasan kadhum.  (2013).  application of response surface methodology (rsm) for optimisation of cod, nh3-n and 2,4-dcp removal from recycled paper wastewater in a pilot-scale granular activated carbon sequencing batch......  - journal of environmental management.  121:179-190. 

israa abdulwahab al-baldawi, siti rozaimah sheikh abdullah, fatihah suja`, nurina anuar, mushrifah idris.  (2013).  phytotoxicity test of scirpus grossus on diesel-contaminated water using a subsurface flow system.  - ecological engineering.  54:49-56. 

israa abdulwahab al-baldawi, siti rozaimah sheikh abdullah, nurina anuar, fatihah suja, mushrifah idris.  (2013).  a phytotoxicity test of bulrush (scirpus grossus) grown with diesel contamination in a free-flow reed bed system.  - journal of hazardous materials.  252-253:64-69. 

masita mohammad, zahira yaakob, siti rozaimah sheikh abdullah.  (2013).  carbon derived from jatropha seed hull as a potential green adsorbent for cadmium (ii) removal from wastewater.  - materials.  4462-4478. 

hassimi abu hasan, siti rozaimah sheikh abdullah, siti kartom kamarudin and noorhisham tan kofli.  (2012).  effective microbes for simultaneous bio-oxidation of ammonia and manganese in biological aerated filter system.  - bioresource technology.  124:355-363. 

marzieh badiei, jamaliah md jahim, nurina anuar, siti rozaimah sheikh abdullah, lim swee su, mohd aidil kamaruzzaman.  (2012).  microbial community analysis of mixed anaerobic microflora in suspended sludge of asbr producing hydrogen from palm oil mill effluent.  - international journal of hydrogen energy.  37(4):3169-3176. 

hassimi abu hasan, siti rozaimah sheikh abdullah, noorhisham tan kofli, siti kartom kamarudin.  (2012).  isotherm equilibriums of mn2+ biosorption in drinking water treatment by locally isolated bacillus species and sewage activated sludge.  - journal of environmental management.  111:34-43. 

m. ansori nasution, z. yaakob, ehsan ali, s. m. tasirin dan s.r.s abdullah.  (2011).  electrocoagulation of palm oil mill effluent as wastewater treatment and hydrogen production using electrode aluminum.  - journal of environmental quality.  40(4):1332-13. 

marzieh badiei, jamaliah md jahim, nurina anuar, siti rozaimah sheikh abdullah.  (2011).  effect of hydraulic retention time on biohydrogen production from palm oil mill effluent in anaerobic sequencing batch reactor.  - international journal of hydrogen energy.  36(10):5912-5919. 

hassimi abu hasan, siti rozaimah sheikh abdullah, siti kartom kamarudin and noorhisham tan kofli.  (2011).  response surface methodology for optimization of simultaneous cod, nh4+?n and mn2+ removal from drinking water by biological aerated filter.  - desalination.  275(1-3):50-61. 

m. n. satheesh kumar, zahira yaakob, siti maimunah, siddaramaiah, s. r. s. abdullah.  (2010).  synthesis of alkyd resin from non-edible jatropha seed oil.  - journal of polymers and the environment.  DOI:10.1007/s10924-010-.