Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 41, Issue 7, Pages 4466-4473Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2015.08.079
Keywords
Biohydrogen production; Manufacturing process wastewater; Sulfate concentration; Packing filter media
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In this study, anaerobic fermentation continuous system was carried out for hydrogen production by low concentration of beverage manufacture process wastewater, the most of the food industry wastewaters are in a relative low sugar concentration. The used substrate concentration of cultivation was 10 g total sugar/L, and hydraulic retention time (HRT) was 1 h for cultivation. Then the substrate concentration of experiments was lowered to 5 g total sugar/L, and HRT 1 h after the cultivation was completed. As a result, hydrogen production rate (HPR) was 11.39 +/- 1.39 L/L/d, and yield was 0.30 +/- 0.06 mol H-2/mol hexose at HRT 1 h. The results showed that the hydrogen dark fermentation production in a continuous system is feasible at low concentrations for food industry wastewater. The sustainable biohydrogen production technology not only treat wastewater but also generate electricity from hydrogen via PEMFC. The SO32- on biohydrogen production, increased with increasing of sulfate concentration can inhibit microbial growth at excess concentration. Sulfate-reducing bacteria (SRB) will cause hydrogen gas converting hydrogen sulfide become poor hydrogen production efficiency. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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