mohanad j. m-ridha, muna faeq ali, ahmed hussein taly, khalid m. abed, sabah j. mohammed, mohd hafizuddin muhamad, hassimi abu hasan.  (2022).  subsurface flow phytoremediation using barley plants for water recovery from kerosene-contaminated water: effect of kerosene concentration and removal kinetics.  - water.  1-12. 

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. 

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. 

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. 

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.