title: Anaerobic Treatment of Palm Oil Mill Effluent in Pilot-Scale Anaerobic EGSB Reactor.
abstract: Large volumes of untreated palm oil mill effluent (POME) pose threat to aquatic environment due to the presence of very high organic content. The present investigation involved two pilot-scale anaerobic expanded granular sludge bed (EGSB) reactors, continuously operated for 1 year to treat POME. Setting HRT at 9.8 d, the anaerobic EGSB reactors reduced COD from 71179 mg/L to 12341 mg/L and recycled half of sludge by a dissolved air flotation (DAF). The average effluent COD was 3587 mg/L with the consistent COD removal efficiency of 94.89%. Adding cationic polymer (PAM) dose of 30 mg/L to DAF unit and recycling its half of sludge caused granulation of anaerobic sludge. Bacilli and small coccid bacteria were the dominant microbial species of the reactor. The reactor produced 27.65 m(3) of biogas per m(3) of POME which was utilized for electricity generation.
authors.affiliation: College of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Jin
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Environmental Sciences, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan.
authors.forename: Qaisar
authors.initials: Q
authors.lastname: Mahmood
authors.affiliation: College of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Jiang-Ping
authors.initials: JP
authors.lastname: Qiu
authors.affiliation: College of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Yin-Sheng
authors.initials: YS
authors.lastname: Li
authors.affiliation: Ronser Bio-Tech Sdn Bhd, C708, Metropolitan Square, Bandar Damansara Perdana, 47820 Petaling Jaya, Malaysia.
authors.forename: Yoon-Seong
authors.initials: YS
authors.lastname: Chang
authors.affiliation: College of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Xu-Dong
authors.initials: XD
authors.lastname: Li
mesh_terms: D000693:Anaerobiosis; D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors / Q000382:microbiology*; D000073878:Palm Oil; D010938:Plant Oils / Q000737:chemistry / Q000378:metabolism*; D012722:Sewage / Q000382:microbiology*; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D010938:Plant Oils; D012722:Sewage; D000073878:Palm Oil