Start-up study of biohydrogen production from palm oil mill effluent in a lab-scale up-flow anaerobic sludge blanket fixed-film reactor
Document Type
Article
Publication Date
3-8-2021
Abstract
A start-up study of lab-scale up-flow anaerobic sludge blanket fixed-film reactor (UASFF) was conducted to produce biohydrogen from palm oil mill effluent (POME). The reactor was fed with POME at different hydraulic retention time (HRT) and organic loading rate (OLR) to obtain the optimum fermentation time for maximum hydrogen yield (HY). The results showed the HY, volumetric hydrogen production rate (VHPR), and COD removal of 0.5-1.1 L H-2/g CODconsumed, 1.98-4.1 L H-2 L-1 day(-1), and 33.4-38.5%, respectively. The characteristic study on POME particles was analyzed by particle size distribution (PSD), Scanning electron microscopy (SEM), and Energy-dispersive X-ray spectroscopy (EDX). The microbial Shannon and Simpson diversity indices and Principal Component Analysis assessed the alpha and beta diversity, respectively. The results indicated the change of bacterial community diversity over the operation, in which Clostridium sensu stricto 1 and Lactobacillus species were contributed to hydrogen fermentation. (c) 2020 Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC.
Keywords
Biohydrogen production, Palm oil mill effluent, Dark fermentation, Characterization analysis, Microbial community
Divisions
sch_civ
Funders
Research Council of Malaya University (RU007C-2017J)
Publication Title
International Journal of Hydrogen Energy
Volume
46
Issue
17
Publisher
Pergamon-Elsevier Science Ltd
Publisher Location
THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND