title: Start-up, steady state performance and kinetic evaluation of a thermophilic integrated anaerobic-aerobic bioreactor (IAAB).
abstract: Thermophilic treatment of palm oil mill effluent (POME) was studied in a novel integrated anaerobic-aerobic bioreactor (IAAB). The IAAB was subjected to a program of steady-state operation over a range of organic loading rate (OLR)s, up to 30 g COD/L day in order to evaluate its treatment capacity. The thermophilic IAAB achieved high chemical oxygen demand (COD), biochemical oxygen demand (BOD) and total suspended solids (TSS) removal efficiencies of more than 99% for OLR up to 18.5 g COD/L day. High methane yield of 0.32 LCH(4) (STP)/g COD(removed) with compliance of the final treated effluent to the discharge limit were achieved. This is higher than that of the mesophilic system due to the higher maximum specific growth rate (μ(max)) of the thermophilic microorganisms. Besides, coupling the model of Grau second order model (anaerobic system) with the model of Monod (aerobic system) will completely define the IAAB system.
authors.affiliation: Department of Chemical and Environmental Engineering, Faculty of Engineering, The University of Nottingham Malaysia Campus, Jalan Broga, 43500 Semenyih, Selangor, Malaysia. Yi-Jing.Chan@nottingham.edu.my
authors.forename: Yi Jing
authors.initials: YJ
authors.lastname: Chan
authors.forename: Mei Fong
authors.initials: MF
authors.lastname: Chong
authors.forename: Chung Lim
authors.initials: CL
authors.lastname: Law
mesh_terms: D001420:Bacteria, Aerobic / Q000254:growth & development / Q000378:metabolism*; D001421:Bacteria, Anaerobic / Q000254:growth & development / Q000378:metabolism*; D056804:Biofuels / Q000382:microbiology*; D019149:Bioreactors / Q000382:microbiology*; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007700:Kinetics; D008697:Methane / Q000302:isolation & purification / Q000378:metabolism*; D008954:Models, Biological; D000073878:Palm Oil; D010938:Plant Oils / Q000378:metabolism*; D018511:Systems Integration
chemical_list: D056804:Biofuels; D010938:Plant Oils; D000073878:Palm Oil; D008697:Methane