Integration of fermentative hydrogen process and fuel cell for on-line electricity generation
- 作者：Chi-Neng Lin ; Shu-Yii Wu ; Kuo-Shing Lee ; Ping-Jei Lin ; Chiu-Yue Lin ; Jo-Shu Chang
- 关键词：Biohydrogen ; Immobilized cells ; Dark fermentation ; Continuously stirred anaerobic bioreactor (CSABR) ; Proton exchange membrane fuel cell (PEMFC)
- 刊名：International Journal of Hydrogen Energy
- 出版年：2007
- 期刊代码：42_03603199
- 类别：ch
- 出版时间：May 2007
- 卷：32
- 期：7
- 页码：802-808
- 文件大小：561 K
摘要
In this work, a dark H2 fermentation process was integrated with a proton-exchange-membrane fuel-cell (PEMFC) system for on-line electricity generation. The H2 producing system was a continuously stirred anaerobic bioreactor (CSABR) seeded with silicone-immobilized sludge. The CSABR system, using sucrose as the sole carbon substrate, was able to continuously and stably produce H2 for over 300 days at a hydraulic retention time (HRT) of 6 h and an influent sucrose concentration of 30 g COD/l. The maximum H2 production rate and the optimal H2 yield were and sucrose, respectively. The H2 produced from the CSABR system was purified via a CO2 absorber and a silica-gel desiccator, and then the >99%pure H2 was fed into a PEMFC system at a rate of 1.72 l/h, generating electricity with a stable electromotive force of . The output power was ca. 0.87 W (at ), and the output voltage and current were stably maintained at 2.28 V and 0.38 A, respectively, when connected to a small light emission diode (LED) panel.