Operation strategies for biohydrogen production with a high-rate anaerobic granular sludge bed bioreactor

Kuo Shing Lee, Yung Sheng Lo, Yung Chung Lo, Ping Jei Lin, Jo Shu Chang

研究成果: Article同行評審

93 引文 斯高帕斯(Scopus)

摘要

Long-term operation for biohydrogen production with an efficient carrier-induced granular sludge bed (CIGSB) bioreactor had encountered problems with poor biomass retention at a low hydraulic retention (HRT) as well as poor mass-transfer efficiency at a high HRT or under a prolonged operation period. This work was undertaken to develop strategies enabling better biomass retention and mass-transfer efficiency of the CIGSB reactors. Supplementation of calcium ion was found to enhance mechanical strength of the granular sludge. Addition of 5.4-27.2 mg/l of Ca 2+ also led to an over three-fold increase in biomass concentration and a nearly five-fold increase in the H 2 production rate (up to 5.1 l H 2/h/l). Two reflux strategies were utilized to enhance the mass-transfer efficiency of the CIGSB system. The liquid reflux (LR) strategy enhanced the H 2 production rate by 2.2-fold at an optimal liquid upflow velocity of 1.09 m/h, which also gave a maximal biomass concentration of ca. 22 g VSS/l. Similar optimal H 2 production rate was also obtained with the gas reflux (GR) strategy at a rate of 1.0-1.49 m/h, whereas the biomass concentration decreased to 2-7 g VSS/l and thereby the specific H 2 production rate was higher than that with LR. The operation strategies applied in this work were effective to allow stable and efficient H 2 production for nearly 100 days.

原文English
頁(從 - 到)605-612
頁數8
期刊Enzyme and Microbial Technology
35
發行號6-7
DOIs
出版狀態Published - 2004 12月 1

All Science Journal Classification (ASJC) codes

  • 生物技術
  • 生物工程
  • 生物化學
  • 應用微生物與生物技術

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