Ezechi, E.H. and Sapari, N. and Menyechi, E.J. and Ude, C.M. and Olisa, E. (2017) Treatment of produced water in a floating carrier bioreactor. Environmental Engineering Research, 22 (2). pp. 210-215. ISSN 12261025

Olisa, E. and Sapari, N. and Malakahmad, A. and Ezechi, E.H. and Riahi, A. (2016) Enhancing landfill gas recovery- A review. Jurnal Teknologi, 78 (5-2). pp. 105-109. ISSN 01279696

Olisa, E. and Sapari, N. and Malakahmad, A. and Ezechi, E.H. and Riahi, A. and Salihi, I.U. and Orji, K.U. (2016) Evaluation of leachate characteristics from different leachate ponds in a semi-aerobic landfill. International Journal of Engineering Research in Africa, 22. pp. 68-82. ISSN 16633571

Ezechi, E.H. and Kutty, S.R.M. and Isa, M.H. and Malakahmad, A. and Olisa, E. (2016) Influence of organic loading rate on a submerged two-stage integrated bioreactor without external carbon addition. In: UNSPECIFIED.

Ezechi, E.H. and Kutty, S.R.B.M. and Isa, M.H. and Malakahmad, A. and Ude, C.M. and Menyechi, E.J. and Olisa, E. (2016) Nutrient removal from wastewater by integrated attached growth bioreactor. Research Journal of Environmental Toxicology, 10 (1). pp. 28-38. ISSN 18193420

Olisa, E. and Sapari, N. and Malakahmad, A. and Ezechi, E.H. and Riahi, A. and Orji, K.U. and Alex-Ohunyon, O. and Salihi, I.U. (2016) Performance of sand channel as pre-treatment for anaerobic landfill bioreactor leachate and biogas generation. Journal of Environmental Science and Technology, 9 (1). pp. 100-110. ISSN 19947887

Sapari, N. and Jusoh, H. and Olisa, E. and Ezechi, E.H. (2016) Sulfide precipitation as treatment for iron rich groundwater. In: UNSPECIFIED.

Riahi, A. and Wan Yusof, K. and Mahinder Singh, B.S. and Isa, M.H. and Olisa, E. and Zahari, N.A.M. (2016) Sustainable potable water production using a solar still with photovoltaic modules-AC heater. Desalination and Water Treatment, 57 (32). pp. 14929-14944. ISSN 19443994

Wanyusof, K. and Riahi, A. and Sapari, N. and Isa, M.H. and Zahari, N.A.M. and Olisa, E. and Khouna, K.M. and Singh, B.S.M. (2016) The performance investigation of three glass cover solar stills using different basin absorbents. In: UNSPECIFIED.

Salihi, I.U. and Kutty, S.R.M. and Isa, M.H. and Olisa, E. and Aminu, N. (2015) Adsorption of copper using modified and unmodified sugarcane bagasse. International Journal of Applied Engineering Research, 10 (19). pp. 40434-40438. ISSN 09734562

Olisa, E. and Sapari, N. and Malakahmad, A. and Orji, K.U. and Riahi, A. (2015) Detection of landfill gas in leachate pipe and pond of a semi-aerobic landfill. Chemical Engineering Transactions, 45. pp. 1687-1692. ISSN 22839216

Ezechi, E.H. and Kutty, S.R.B.M. and Isa, M.H. and Malakahmad, A. and Ude, C.M. and Menyechi, E.J. and Olisa, E. (2015) Determination of decay coefficient of biomass through endogenous respiration. Research Journal of Microbiology, 10 (8). pp. 355-365. ISSN 18164935

Riahi, A. and Yusof, K.W. and Singh, B.S.M. and Olisa, E. and Sapari, N. and Isa, M.H. (2015) The performance investigation of triangular solar stills having different heat storage materials. International Journal of Energy and Environmental Engineering, 6 (4). pp. 385-391. ISSN 20089163

Sapari, N. and Orji, K.U. and Mohamad Hazli, M.H.B. and Yavari, S. and Olisa, E. and Asadpuor, R. (2014) Engineered wetland for the treatment of wastewater from fertilizer plant. Advanced Materials Research, 1051. pp. 500-504. ISSN 10226680

Orji, K.U. and Sapari, N.B. and Yusof, K.W. and Robabeh, A. and Olisa, E. (2014) Water quality assessment of ex-mining lakes in Perak, Malaysia as alternative source of water supply. Applied Mechanics and Materials, 567. pp. 177-182. ISSN 16609336

Orji, K.U. and Sapari, N. and Yusof, K.W. and Asadpour, R. and Olisa, E. (2013) Comparative study of water quality of rivers used for raw water supply & ex-mining lakes in Perak, Malaysia. In: UNSPECIFIED.

Sapari, N. and Mustapha, S. and Olisa, E. and Jusoh, H. (2013) Improving the production of gas in landfills by methanogenic sand layer. In: UNSPECIFIED.