title: The performance and kinetic study of membrane anaerobic system in treating POME. Palm oil mill effluent.
abstract: The application of the three known kinetic models on MAS (membrane anaerobic system) process treating the POME and the overall MAS treatment efficiency were investigated. The MAS consists of a cross-flow ultrafiltration membrane (Model Micro 240) for solid-liquid separation. Six steady states were attained over a range of mixed liquor suspended solids of 12,681 - 30,460 mg/l. The study showed a good fitting of the Monod Model (91.1%), Contois Model (98.5%) and Chen and Hashimoto Model (95%) for the MAS treating raw POME at organic loadings between 1.5 kgCOD/m3/d to 6.5 kgCOD/m3/d. The growth yield coefficient, Y, was found to be 0,604 kg VSS/kgCOD while the specific microorganism decay rate was 0.099 day(-1). The k values were in the range of 0,242 to 0.425 mg COD/mg VSS.d and the microm values were between 0.145 to 0.257 day(-1). Throughout the study, the removal efficiency of COD was 83.2 to 97.97%. The methane production rate was between 0.262 to 0.473 l/g-COD-utilised/d. The MAS treatment efficiency was greatly affected by SRT and OLRs. In the study, membrane fouling and polarization at the membrane surface played a significant role in the formation of the strongly attached cake layer limiting membrane permeability
authors.affiliation: Faculty of Engineering, UPM.
authors.forename: L S
authors.initials: LS
authors.lastname: Lai
authors.forename: A
authors.initials: A
authors.lastname: Fakhru'l-Razi
authors.forename: A
authors.initials: A
authors.lastname: Idris
authors.forename: M A
authors.initials: MA
authors.lastname: Hassan
mesh_terms: D000693:Anaerobiosis; D001421:Bacteria, Anaerobic; D019149:Bioreactors; D002455:Cell Division; D004042:Dietary Fats, Unsaturated; D005740:Gases / Q000032:analysis; D007700:Kinetics; D008567:Membranes, Artificial; D008697:Methane / Q000032:analysis; D000073878:Palm Oil; D010938:Plant Oils; D014865:Waste Disposal, Fluid / Q000379:methods*; D014866:Waste Products
chemical_list: D004042:Dietary Fats, Unsaturated; D005740:Gases; D008567:Membranes, Artificial; D010938:Plant Oils; D014866:Waste Products; D000073878:Palm Oil; D008697:Methane