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. 

muhammad azham abdullah, ahmad razi othman, nur nadhirah ramli, rusli daik.  (2026).  municipal sludge-derived biochar enriched with pseudomonas sp. isolate ra-21 enhances soil properties and capsicum annuum growth.  - sains malaysiana.  1088 - 1099. 

nurul atiqa mohd zainey, ahmad razi othman, nur nadhirah ramli, siti rozaimah sheikh abdullah, hassimi abu hasan & nur ‘izzati ismail.  (2026).  bakteria tempatan untuk perolehan semula minyak mentah dari sisa petroleum.  - jurnal kejuruteraan.  1279 - 1290. 

ahmad razi othman yee chen hua gobbi nathan a/l jayaraman.  (2026).  background paper with policy recommendations for the soil conditioner policy in apec economies.  - .  . 

ahmad razi bin othman ,rozaimah @ siti rozaimah binti sheikh abdullah ,noorashikin binti md saleh ,nur `izzati binti ismail ,nur nadhirah binti ramli .  (2026).  pencirian dan potensi biosurfaktan dari rizobakteria tempatan terpilih dalam perolehan semula minyak daripada enap cemar petroleum.  - .  . 

noorhisham tan kofli, abbas ismail, ahmad razi othman, yuliana yuhana & rosiah rohani.  (2026).  student activities: naces2024 as an hollistic approach for student skills development (aktiviti pelajar: naces2024 sebagai pendekatan menyeluruh kepada pembangunan kemahiran pelajar).  - jurnal personalia pelajar.  35 - 40. 

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. 

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. 

yuqiang zhao, ahmad razi othman, wenlai xu, xiayu zhou, siti rozaimah sheikh abdullah, hassimi abu hasan.  (2025).  overview of bacterial and algal symbiotic systems and mechanisms of mutualistic symbiosis, signaling and gene transfer.  - jurnal kejuruteraan.  3701 - 3711. 

nur farahah mohd khairuddin, ahmad razi othman, zahratul huda mohamad riza, nur nadhirah ramli, siti rozaimah sheikh abdullah, hassimi abu hasan, nur ‘izzati ismail.  (2025).  soybean pulp extract as a natural coagulant for microplastic removal in domestic wastewater.  - jurnal kejuruteraan .  4127 - 4134. 

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. 

yashawini phriya rauichandran, kai ling yu, mohd nur ikhmal salehmin, hassan mohamed, halimah badioze zaman, samet sahin, eileen h. yu, ahmad razi othman, wei lun ang, swee su lim.  (2025).  preconditioned microbial communities in electrochemical sensing: initial assessment of detection capabilities and durability.  - applied and environmental microbiology.  1 - 17. 

wan nur farah ain wan di, farah arina abdul, ahmad razi othman, noor liyana sukiran.  (2025).  kesan penyebuan biji benih oleh bacillus spp terhadap percambahan dan pertumbuhan anak benih ukmrc2 di bawah tekanan abiotik.  - undergraduate research journal for biological sciences & biotechnology.  69 - 76. 

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. 

yuqiang zhao, ahmad razi othman, nur ‘izzati ismail & wenlai xu.  (2025).  optimizing ammonia nitrogen removal from hospital effluent using a bacteria-algae consortium.  - jurnal kejuruteraan.  647 - 656. 

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. 

noorhisham tan kofli, abbas ismail, ahmad razi othman, yuliana yuhana dan rosiah rohani.  (2025).  student activities: naces2024 as a comprehensive approach to student skills development.  - program book international conference on engineering and built environment education.  74 - 74. 

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. 

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. 

nur nadia bachok, norhafizah burham, ahmad razi othman, nurul huda abdul karim, ahmad ashrif a. bakar, mohd hadri hafiz mokhtar & norhana arsad.  (2025).  pencirian optik dalam cecair indeks bias menggunakan penderia gentian optik tirus: pendekatan gabungan simulasi dan eksperimen.  - jurnal kejuruteraan.  2817 - 2828. 

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. 

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. 

yavinash muralee tharan, ahmad razi othman, nur nadhirah ramli, siti rozaimah sheikh abdullah, hassimi abu hasan, nur ‘izzati ismail.  (2025).  penguraian sisa pepejal dengan menggunakan kulat aspergillus fumigatus terpegun (decomposition of solid waste using immobilised fungi aspergillus fumigatus) .  - sains malaysiana.  2367 - 2376. 

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. 

azmi ahmad, siti rozaimah sheikh abdullah & ahmad razi othman.  (2024).  industri akuakultur potensi penghasilan biobaja.  - .  . 

mohd hadri hafiz mokhtar, roslena md zaini, nor syeeda abd alim et.al.  (2024).  academic expertise directory faculty of engineering and built environment.  - .  . 

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. 

nur asherin sayuti, norliza abd rahman, jarinah mohd ali, noorashikin md saleh, ahmad razi othman, mazlina mohd said, hafiza shukor, wan rizzal wan zaki.  (2024).  preliminary study: antimicrobial permeation and release rates of biocellulose wound dressing produced using acetobacter xylinum 0416 in pineapple peel waste culture.  - advances in agricultural and food research journal.  1 - 16. 

nurul nadiah zulkarnain, norliza abd rahman, ahmad razi othman, noorashikin md saleh, jarinah mohd ali, hafza shukor, mazlina mohd said, wan rizzal wan zaki.  (2024).  characterization and antibacterial activity of bacterial cellulose impregnated with moringa oleifera leaf extract and silver nanoparticles.  - cellulose.  5213 - 5227. 

muhammad farhan hil me, wei lun ang, ahmad razi othman, abdul wahab mohammad, ahmad afiq arshad nasharuddin, alijah mohd aris, bee chin khor, swee su lim.  (2024).  assessment of the microbial electrochemical sensor (sentry) as a potential wastewater quality monitoring tool for common pollutants found in malaysia.  - environmental monitoring and assessment.  1-16. 

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. 

ros maria mat yeh, bakr ahmed taha, nur nadia bachok, nurfarhana m sapiee, ahmad razi othman, nurul huda abd karim, norhana arsad.  (2024).  advancements in detecting porcine-derived proteins and dna for enhancing food integrity: taxonomy, challenges, and future directions.  - food control.  1-16. 

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. 

azmi ahmad, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, setyo budi kurniawan.  (2024).  aquaculture wastewater treatment using plant-based coagulants: evaluating removal efficiency through coagulation-flocculation process.  - results in chemistry.  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, & israa abdulwahab al-baldawi.  (2024).  enhanced removal of hydrocarbons from crude oil sludge through phytoremediation with biosurfactant-producing rhizobacteria.  - iop conf. series: earth and environmental science.  1-9. 

islam j k elhabil, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, nur izzati ismail.  (2024).  potential of phytoremediation in alleviating microplastic pollution in wastewater.  - 2024 13th international conference on chemistry and chemical process.  xx. 

ang wei lun;abdul wahab bin mohammad;lim swee su;ahmad razi bin othman.  (2024).  commissioning and performance of biosensor probe for wastewater monitoring.  - .  . 

siti rozaimah bt. sheikh abdullah;babul airianah binti othman;noorashikin binti md saleh;ahmad razi bin othman.  (2024).  pemulihgunaan enapcemar dan biopepejal kaya nutrien dari efluen industri kopi sebagai perapi tanah ke arah inisiatif ekonomi kitaran.  - .  . 

norhafizah burham, nurnadia bachok, norazida ali, ahmad razi othman, norhana arsad, aziati husna awang, naimah mat isa, zhibin li.  (2024).  effect of coated tungsten disulfide (ws2) on tapered optical fibre for urea detection.  - journal of advanced research in applied sciences and engineering technology.  181 - 190. 

muhamaad razis ismail.  (2024).  inovasi lonjak petani.  - harian metro.  . 

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. 

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. 

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. 

hassimi bin abu hasan;noorhisham bin tan kofli;siti rozaimah bt. sheikh abdullah;ahmad razi bin othman.  (2023).  analisis sifat fiziko-kimia dan kinetik penghasilan bioflokulan polimerik oleh bakteria penghasil-bioflokulan asli sebagai alternatif kepada flokulan kimia dalam rawatan air.  - .  . 

ahmad razi othman.  (2023).  guna bioteknologi rawat sisa plastik.  - akhbar kosmo.  1-2. 

ain aqilah basirun, ahmad razi othman, nur adeela yasid, mohd izuan effendi halmi, baskaran gunasekaran & mohd yunus abd shukor.  (2023).  adsorption kinetics, equilibrium, and thermodynamic studies to understand adsorption behavior of evans blue dye by durian husk.  - korean journal of chemical engineering.  1440-1456. 

nur nadhirah ramli, setyo budi kurniawan, joshua o. ighalo, nor sakinah mohd said, nuratiqah marsidi, junaidah buhari, radhiatul atiqah ramli shah, maryam zulkili, jahira alias, nurull muna daud, jamilah ahmad, ahmad razi othman, siti rozaimah.  (2023).  a review of the treatment technologies for hexavalent chromium contaminated water.  - biometals.  1189-1219. 

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. 

mohammad mohammad alnawajha, setyo budi kurniawan, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman.  (2023).  performance of leucaena leucocephala and alum in treating aquaculture: effect of dosage, rapid speed and settling time.  - international journal of environmental science and technology.  9981-9994. 

ain aqilah basirun, ahmad razi othman, nur adeela yasid, mohd yunus abd shukor, mohd ezuan khayat.  (2023).  a green approach of utilising banana peel (musa paradisiaca) as adsorbent precursor for an anionic dye removal: kinetic, isotherm and thermodynamics analysis.  - processes.  1-22. 

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. 

ahmad razi bin othman;norhana binti arsad.  (2023).  pembelajaran ir 4.0: simulasi di dalam makmal.  - .  . 

abdussamad abubakar, motharasan manogaran, nur adeela yasid, ahmad razi othman, mohd yunus abd shukor.  (2023).  equilibrium, kinetic and thermodynamic studies of the adsorption of trypan blue dye by pseudomonas sp. strain mm02 inactivated biomass.  - korean journal of chemical engineering.  1928-1953. 

siti rozaimah bt. sheikh abdullah;nurina bt. anuar;hassimi bin abu hasan;noorashikin binti md saleh;ahmad razi bin othman;nur `izzati binti ismail.  (2023).  interaction of mycorrhizal fungi and native emergent plants in co-phytoremediation of hydrocarbon contaminated sludge.  - .  . 

ahmad razi othman.  (2023).  kepelbagaian biodiversiti mikroorganisma di dalam pemuliharaan dan rawatan alam sekitar.  - impak: kluster sumber lestari, alam sekitar dan kehidupan pintar.  10-11. 

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. 

ryan yow zhong yeo, bin hou chin, muhammad farhan hil me, jan feng chia, hai the pham, ahmad razi othman, abdul wahab mohammad, wei lun ang, swee su lim.  (2023).  rapid surface modification of stainless steel 304l electrodes for microbial electrochemical sensor application.  - acs biomaterials science and engineering.  6034-6044. 

norazreen abd aziz, syahirah abd. halim, noorfazila kamal, aqilah baseri huddin, haslina jaafar, mohd hadri hafiz mokhtar, muhammad ammirrul atiqi mohd zainuri, ahmad asrul ibrahim, mohd hafiz baharuddin, nor azwan mohamed kamari, mohd hairi mohd zaman.  (2023).  penilaian tahap kepuasan peserta dalam pertandingan robotik:satu kajian kes pertandingan i-robot 2023.  - persidangan pendidikan kejuruteraan dan alam bina.  118-121. 

ahmad razi othman, nur izzati ismail, norhisham tan kofli.  (2023).  pembangunan aktiviti pelajar melalui kelab pelajar chescicheme student chapter (chescicheme sc).  - persidangan pendidikan kejuruteraan dan alam bina 2023.  106-107. 

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. 

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. 

siti noor khaleeda mhd syahri, hassimi abu hasan, siti rozaimah sheikh abdullah, ahmad razi othman, peer mohamed abdul, raja farzarul hanim raja azmy, mohd hafizuddin muhamad.  (2022).  recent challenges of biogas production and its conversion to electrical energy.  - journal of ecological engineering.  251-269. 

xinglong liu, ahmad razi othman, nidal h. abu-hamdeh, abdullah m.abusorrah, arash karimipour, zhixiong li, f. ghaemi, dumitru baleanu.  (2022).  the molecular dynamics study of atomic structure behavior of ll-37 peptide as the antimicrobial agent, derived from the human cathelicidin, inside a nano domain filled by the aqueous environment.  - journal of molecular liquids.  1-9. 

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. 

setyo budi kurniawan, nur nadhirah ramli, nor sakinah mohd said, jahira alias, muhammad fauzul imron, siti rozaimah sheikh abdullah, ahmad razi othman, ipung fitri purwanti, and hassimi abu hasan.  (2022).  practical limitations of bioaugmentation in treating heavy metal contaminated soil and role of plant growth promoting bacteria in phytoremediation as a promising alternative approach.  - heliyon.  1-14. 

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. 

nurul alia nabilah dzolkifle, ammar akmal zuhdi ramli,ruhan asyrani rosli, siti nurnafisah mohd zuraidi, mohd. faez sharif, ahmad razi othman and zakuan azizi shamsul harumain.  (2022).  the potential of silica from rice husk ash on removal of sulphide in wastewater.  - aip conference proceedings.  1-7. 

siti rozaimah bt. sheikh abdullah;babul airianah binti othman;hassimi bin abu hasan;noorashikin binti md saleh;ahmad razi bin othman;nur `izzati binti ismail.  (2022).  biopenggilapan air sisa industri minyak kelapa sawit (pome) terawat menggunakan azolla pinnata dan lemna minor bagi penghasilan makanan ternakan.  - .  . 

ahmad razi bin othman;nurina bt. anuar;siti rozaimah bt. sheikh abdullah;hassimi bin abu hasan.  (2022).  understanding chromium reduction metabolism pathway by malaysian soil bacteria for enhancing bioremediation process.  - .  . 

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. 

m. zulkifli, h.abu hasan, s.r.s. abdullah, a.r. othman.  (2022).  acclimatization studies of effective microbes in moving bed biofilm reactor.  - 6th international conference of chemical engineering and industrial biotechnology 2022.  535-536. 

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. 

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. 

ang wei lun;abdul wahab bin mohammad;lim swee su;ahmad razi bin othman.  (2022).  expansion of microbial fuel cell sensor design for effective water quality monitoring.  - .  . 

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. 

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. 

siti shilatul najwa binti sharuddin, siti rozaimah sheikh abdullah, ahmad razi othman.  (2022).  gabungan fitoteknologi dan biosurfaktan ke arah peningkatan kualiti alam sekitar.  - .  136. 

ryan yow zhong yeo, bin hou chin,muhammad farhan hil me, jan feng chia, ahmad razi othman,abdul wahab mohammad, swee su lim.  (2022).  improving the sensitivity of microbial electrochemical sensors via surface modification on stainless steel 304l.  - international postgraduate conference for energy research.  . 

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. 

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. 

motharasan manogaran, nur adeela yasid, ahmad razi othman, baskaran gunasekaran,mohd izuan effendi halmi and mohd yunus abd shukor.  (2021).  biodecolourisation of reactive red 120 as a sole carbon source by a bacterial consortium toxicity assessment and statistical optimisation.  - international journal of environmental research and public health.  1-26. 

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. 

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. 

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. 

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. 

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. 

ahmad razi othman, norhana arsad, nurfarhana mohd sapiee, mastang tanra.  (2021).  pembelajaran ir 4.0: simulasi di dalam makmal.  - kongres dan pertandingan inovasi dalam pengajaran dan pembelajaran.  148-149. 

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. 

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. 

siti rozaimah bt. sheikh abdullah;hassimi bin abu hasan;ahmad razi bin othman.  (2021).  an integrated coagulation-flocculation and adsorption process for coffee industry effluent using natural resources.  - .  . 

hassimi bin abu hasan;noorhisham bin tan kofli;siti rozaimah bt. sheikh abdullah;ahmad razi bin othman.  (2021).  rawatan efluen sagu dan penghasilan bioflokulan menggunakan reaktor biofilem lapisan bergerak.  - .  . 

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. 

ahmad razi bin othman;mohd. sahaid bin kalil;siti rozaimah bt. sheikh abdullah.  (2020).  biodegradation ability of local bacterial isolates from carbofuran-contaminated paddy fields.  - .  . 

wan nor roslam bin wan isahak;siti aminah bt. osman;noor ezlin bt. ahmad basri;farid bin mat zain;shahrom binti md zain;noraini binti hamzah;afida binti ayob;muhamad fadle bin mohamad abu sadin;suhana binti johar;mohammad rasidi bin mohammad rasani;mohd r.  (2020).  integrasi gaya hidup lestari dan pengurusan sisa dalam memperkasa kolaborasi universiti dan komuniti masjid.  - .  . 

mohd. sahaid bin kalil;manal binti ismail;ahmad razi bin othman.  (2020).  development of pico-hydropower (php) generator-microbial electrolysis cell (mec) integrated system for clean, renewable and sustainable hydrogen gas (h2) production.  - .  . 

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. 

mohd aidil kamaruzzaman, siti rozaimah sheikh abdullah, hassimi abu hasan, ahmad razi othman, maizom hassan & mushrifah idris.  (2020).  characterisation of pb-resistant plant growth-promoting rhizobacteria (pgpr) from scirpus grossus.  - biocatalysis and agricultural biotechnology.  1-7. 

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. 

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. 

siti fatin mohd razali, norhana arsad, norngainy mohd tawil, ahmad razi othman, nizaroyani saibani & aqilah baseri huddin.  (2020).  pendidikan keusahawanan 4ir: gamifikasi.  - siri 10.  1-11. 

ahmad razi othman nur suhada mohd halimi muhammad shafiq sharafuddin mat zaini hassimi abu hasan nur izzati ismail siti rozaimah sheikh abdullah.  (2020).  degradation of carbofuran using malaysian isolate bacillus sp..  - malaysian journal of biochemistry and molecular biology.  1-7. 

ahmad razi othman.  (2020).  kaedah rawatan air kurangkan risiko jangkitan virus.  - berita harian.  1-2. 

motharasan manogaran, baarathyee manogaran, ahmad razi othman, baskaran gunasekaran and mohd yunus abd shukor.  (2020).  decolourisation of reactive red 120 by a heavy metal-tolerant bacterium isolated from juru river, malaysia.  - bioremediation science and technology research.  23-26. 

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. 

mohd sahaid kalil dan ahmad razi othman.  (2020).  the effect of rhodobacter sphaeroides cultivation techniques for hydrogen gas production.  - malaysian journal of biochemistry & molecular biology.  12-15. 

siti shilatul najwa binti sharuddin, siti rozaimah sheikh abdullah, hassimi abu hasan & ahmad razi othman.  (2019).  comparative tolerance and survival of scirpus grossus and lepironia articulata in real crude oil sludge.  - international journal of engineering and technology.  . 

nurlizah abu bakar, mohd yunus shukor, ahmad razi othman.  (2019).  isolation and characterization of local isolate bacteria in reducing molybdenum from malaysia soil.  - asian journal of microbiology, biotechnology and environmental sciences.  127-134. 

hartinie marbawi, muhammad arif mukhriz ros saidon khudri, ahmad razi othman, mohd izuan effendi halmi, jualang azlan gansau and nur adeela yasid.  (2019).  kinetic analysis of the adsorption of glyphosate onto palm oil fronds activated carbon.  - bioremediation science and technology research.  29-33. 

motharasan manogaran, ahmad razi othman, mohd yunus shukor and mohd izuan effendi halmi.  (2019).  modelling the effect of heavy metal on the growth rate of an sds-degrading pseudomonas sp. strain dry15 from antarctic soil.  - bioremediation science and technology research.  41-45. 

muhammad arif mukhriz ros saidon khudri, shakirah abd wahab sha'arani, ahmad razi othman, mohd izuan effendi halmi, nur adeela yasid and mohd yunus shukor.  (2019).  kinetic analysis of the adsorption of the brominated flame retardant 4-bromodiphenyl ether onto biochar-immobilized sphingomonas sp..  - bioremediation science and technology research.  8-12. 

shakirah abd wahab sha'arani, nur adeela yasid, muhammad arif mukhriz ros saidon khudri, mohd yamin shaari, mohd yunus abd shukor and ahmad razi othman.  (2019).  isothermal modelling on the removal of copper using durvillaea antarctica.  - bioremediation science and technology research.  24-28. 

ain aqilah basirun, muhammad arif mukhriz ros saidon khudri, nur adeela yasid, ahmad razi othman, wan lutfi wan johari, mohd yunus shukor and mohd izuan effendi halmi.  (2019).  kinetic analysis for the removal of copper using durvillaea antarctica.  - journal of environmental microbiology and toxicology.  32-35. 

aa'ishah abd gafar, motharasan manogaran, nur adeela yasid, mohd izuan effendi halmi, mohd yunus shukor and ahmad razi othman.  (2019).  arrhenius plot analysis, temperature coefficient and q10 value estimation for the effect of temperature on the growth rate on acrylamide by the antarctic bacterium pseudomonas sp. strain dryj7.  - journal of environmental microbiology and toxicology.  27-31. 

hartinie marbawi, muhammad arif mukhriz ros saidon khudri, ahmad razi othman, mohd izuan effendi halmi, jualang azlan gansau, nur adeela yasid, mohd yunus shukor.  (2019).  isothermal modelling of the adsorption of glyphosate onto palm oil fronds activated carbon.  - journal of environmental microbiology and toxicology.  21-26. 

nurlizah abu bakar, ahmad razi othman, mohd yunus shukor.  (2019).  heavy metals detection from contaminated river using molybdenum reducing enzyme.  - jurnal kejuruteraan.  303-308. 

ahmad razi othman, intan safinar ismail, norhani abdullah, syahida ahmad.  (2019).  identification of anti-inflammatory compound/compounds in hexane fraction of jatropha curcas root extract.  - asia pacific journal of molecular biology and biotechnology.  62-68. 

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. 

masli irwan rosli, ahmad razi othman, nurina anuar & siti rozaimah sheikh abdullah.  (2018).  plagiat dan perlaksanaan turnitin dalam kursus projek ilmiah.  - .  1. 

ahmad razi othman.  (2018).  membangunkan aplikasi video dan animasi di dalam pembelajaran.  - pertandingan k-novasi 2018.  1. 

maryam zahaba, mohd. izuan effendi halmi, ahmad razi othman, mohd. yunus shukor.  (2018).  mathematical modelling of the growth curve of vibrio sp. isolate mz grown in seawater medium.  - bioremediation science and technology research.  . 

mohd. izuan effendi halmi, mohd. badrin hanizam abd rahim, ahmad razi othman.  (2018).  estimation of lc50 and its confidence interval for the effect of ferrous sulphate on catla catla.  - journal of environmental microbiology and toxicology.  . 

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.  . 

saja radhi nayyef alanbary, siti rozaimah sheikh abdullah, hassimi abu hassan & ahmad razi othman.  (2018).  screening for resistant and tolerable plants (ludwigia octovalvis and phragmites karka) in crude oil sludge for phytoremediation of hydrocarbons.  - iranica journal of energy and environment.  . 

ahmad razi othman, mohd sahaid kalil, noorhisham tan kofli, nurina anuar and siti rozaimah shiekh abdullah.  (2018).  the development of the video and animation in teaching and learning process.  - knovasi p&p ukm.  72-76. 

abo shakeer l k a rahman m a yakasai h bakar na othman ar syed ma abdullah n shukor my.  (2017).  kinetic studies of the partially purified molybdenum reducing enzyme from bacillus pumilus strain lbna.  - bioremediation science and technology research.  18-23. 

chee hs, motharasan manogaran, zarizal suhaili, yakasai h, rahman mfa, nor aripin shamaan, nur adeela yasid, ahmad razi othman.  (2017).  isolation and characterisation of a mo reducing bacterium from malaysian soil.  - bioremediation science and technology research.  17-24. 

tham l.g., shukor m.y., syed m.a., shamaan n.a. and othman a.r..  (2017).  partial purification of cholinesterase from pangasius pangasius using affinity chromatography.  - journal of environmental microbiology and toxicology.  14-18.