Biohydrogen production with fixed-bed bioreactors

Jo Shu Chang, Kuo Shing Lee, Pin Jei Lin

研究成果: Conference article同行評審

340 引文 斯高帕斯(Scopus)

摘要

An investigation on anaerobic hydrogen production was conducted in fixed-bed bioreactors containing hydrogen-producing bacteria originated from domestic sewage sludge. Three porous materials, loofah sponge (LS), expanded clay (EC) and activated carbon (AC), were used as the support matrix to allow retention of the hydrogen-producing bacteria within the fixed-bed bioreactors. The carriers were assessed for their effectiveness in biofilm formation and hydrogen production in batch and continuous modes. It was found that LS was inefficient for biomass immobilization, while EC and AC exhibited better biomass yields. The fixed-bed reactors packed with EC or AC (denote as EC or AC reactors) were thus used for continuous hydrogen fermentation at a hydraulic retention time (HRT) of 0.5-5 h. Sucrose was utilized as the major carbon source. With a sucrose concentration of ca. 20 g COD/l in the feed, the EC reactor (workingvolume = 300 ml) was able to produce H2 at an optimal rate of 0.415 l/h/l at HRT = 2 h. In contrast, the AC reactor (300 ml in volume) exhibited a better hydrogen production rate of 1.32 l/h/l, which occurred at HRT = 1 h. When the AC reactor was scaled up to 3 l, the hydrogen production rate was nearly 0.53-0.68 l/h/l for HRT = 1-3 h, but after a short thermal treatment (75°C, 1 h) the rate rose to ca. 1.21 l/h/l at HRT = 1 h. The biogas produced with EC and AC reactors typically contained 25-35% of H2 and the rest was mainly CO2, while production of methane was negligible (less than 0.1%). During the efficient hydrogen production stage, the major soluble metabolite was butyric acid, followed by propionic acid, acetic acid, and ethanol.

原文English
頁(從 - 到)1167-1174
頁數8
期刊International Journal of Hydrogen Energy
27
發行號11-12
DOIs
出版狀態Published - 2002 十一月
事件Biohydrogen 2002 (BIO-H2) - Ede, Netherlands
持續時間: 2002 四月 212002 四月 21

All Science Journal Classification (ASJC) codes

  • 可再生能源、永續發展與環境
  • 燃料技術
  • 凝聚態物理學
  • 能源工程與電力技術

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