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- W2891876296 abstract "Palm oil mill effluent (POME), an agro-industrial wastewater with high solids content, was subject to hydrolysis by 1% (w/v) nitric acid in order to increase its solubility and the fermentable sugar content from its cellulosic component. POME hydrolysate was then evaluated in an up-flow anaerobic sludge blanket (UASB) bioreactor for the production of biohydrogen gas via mixed culture under thermophilic conditions. The bioreactor was fed with pre-treated POME under varied hydraulic retention time (HRT) between 48 and 3 h at constant cycle length of 24 h to test the productivity of H2 and the stability of UASB; no washout of biomass occurred at any cycle and the system managed to recover its H2 production rate (HPR) after initial fluctuations. In this study, H2-producing granules (HPGs) were formed shortly after the start-up period, and were analysed by FESEM, FTIR, SEM-EDX, and their extracellular polymeric substances (EPS) content. The maximum HY and HPR achieved were 2.45 mol-H2/mol-sugar and 11.75 LH2/LPOME d−1, respectively, at HRT 6 h. Acetic acid was found to be the major by-product at all HRTs, followed by butyric acid, while Clostridium spp. was found to be the most dominant H2-producing bacteria in the system. Results suggest that UASB has a good potential for stable H2 production with high POME digestion rate." @default.
- W2891876296 created "2018-09-27" @default.
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- W2891876296 date "2019-04-01" @default.
- W2891876296 modified "2023-10-06" @default.
- W2891876296 title "Operation performance of up-flow anaerobic sludge blanket (UASB) bioreactor for biohydrogen production by self-granulated sludge using pre-treated palm oil mill effluent (POME) as carbon source" @default.
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- W2891876296 doi "https://doi.org/10.1016/j.renene.2018.09.062" @default.
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