Setyo Budi Kurniawan, Azmi Ahmad, Muhammad Fauzul Imron, Siti Rozaimah Sheikh Abdullah, Ahmad Razi Othman, Hassimi Abu Hasan.  (2023).  Performance of chemical-based vs bio-based coagulants in treating aquaculture wastewater and cost-benefit analysis.  - Polish Journal of Environmental Studies.  1177-1187. 

Ahamd Razi Othman, Yap Jun Sheng, Noorhisham Tan Kofli, Siti Kartom Kamaruddin.  (2022).  Improving methanol production by Methylosinus trichosproium through the one factor at a time (OFAT) aproach.  - Greenhouse Gases Science and Technology.  661-668. 

Hind Munaem Ahmed, Siti Rozaimah Sheikh Abdullah, Hassimi Abu Hasan, Ahmad Razi Othman, Nur Izzati Ismail, Setyo Budi Kurniawan.  (2021).  Phytotoxicity of coffee wastewater to water hyacinth as prior step to phytotreatment assessment: influence of concentration and amount of plant biomass.  - Environmental Engineering and Management Journal.  317-328. 

Saja Radhi Nayyef Alanbary, Siti Rozaimah Sheikh Abdullah, Israa Abdul Wahab Al-Baldawi, Hassimi Abu Hasan, Nurina Anuar, Ahmad Razi Othman & Fatihah Suja.  (2019).  Phytotoxicity of contaminated sand containing crude oil sludge on ludwigia octovalvis.  - Journal of Ecological Engineering.  246-255. 

Nurlizah Abu Bakar, Ahmad Razi Othman, Mohd Yunus Shukor.  (2019).  Heavy metals detection from contaminated river using molybdenum reducing enzyme.  - Jurnal Kejuruteraan.  303-308. 

Fuzieah Subari, Mohd Aidil Kamaruzzaman, Siti Rozaimah Sheikh Abdullah, Hassimi Abu Hasan & Ahmad Razi Othman.  (2018).  Simultaneous removal of ammonium and manganese in slow sand biofilter (SSB) by naturally grown bacteria from lake water and its diverse microbial community.  - Journal of Environmental Chemical Engineering.  .