M. Faisal, Hajime Unno
A modified anaerobic baffled bioreactor (MABR) was studied under steady-state conditions for treating palm oil mill wastewater. Methane gas production was in the range of 0.32-0.421-CH4 (g-COD)-1 removal, which corresponded to the methane content of 67.3-71.2% within the range of examined hydraulic retention time (HRT) of 3-10 days. The removal ranges of COD and grease/oil were from 87.4 to 95.3% and from 44.1 to 91.3%, respectively. The total volatile fatty acid production was 1450 mg 1-1 at HRT of 3 days and gradually decreased to 608 mg 1-1 at HRT of 10 days. Based on the experimental data, a kinetic model was discussed. Through the model the biokinetic parameters were evaluated, which represented the behavior of reactor very well. © 2001 Elsevier Science B.V. All rights reserved.
Department of Chemical Engineering, Faculty of Engineering, Syiah Kuala University, Darussalam, Banda Aceh 23111, Indonesia; Department of Bioengineering, School of Bioscience and Biotechnology, Tokyo Institute of Technology, Midoriku Yokohama 226-8501, 4259 Nagatsuta-cho, Japan
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