何盛东^1,,
陈思²,
樊耀亭²
1.郑州航空工业管理学院土木建筑学院，郑州 450006
2.郑州大学化学与分子工程学院，郑州 450001
基金项目: 国家自然科学基金资助项目21171147，50578148
河南省高等学校重点科研项目17A560012国家自然科学基金资助项目(21171147，50578148)
河南省高等学校重点科研项目（17A560012）

Hydrogen production from hydrogen fermentation effluent in single chamber microbial electrolysis cell with double anode arrangement

HE Shengdong^1,,
CHEN Si²,
FAN Yaoting²
1.School of Civil Engineering and Architecture, Zhengzhou University of Aeronautics, Zhengzhou 450006, China
2.College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China

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摘要:为提高微生物电解池(MEC)利用氢发酵废水产氢速率，以丁酸为底物在微生物燃料电池(MFC)中驯化富集阳极产电微生物，采用单室双阳极MEC处理玉米秸秆的氢发酵废水，通过对关键过程参数的优化，实现氢发酵废水高效产氢。结果表明，当外加电压为0.8 V时，产氢速率和玉米秸秆氢发酵废水中COD的去除率分别达到(5.31±0.13) m3·(m3·d)-1和(58±2)%。其中，乙酸、丁酸、丙酸、乙醇的去除率分别达到(95±2)%、(76.2±0.8)%、(93±3)%、(98±1)%。与单室单阳极MEC相比，单室双阳极MEC利用玉米秸秆氢发酵废水进行深度产氢的速率提高了1.22倍。此外，MEC生物阳极驯化方式对MEC利用玉米秸秆氢发酵废水产氢具有重要影响。与利用乙酸为底物驯化富集的生物阳极相比，以丁酸为底物驯化富集的生物阳极去除COD的能力和MEC产氢速率都有提高。
关键词: 微生物电解池/
产氢速率/
单室双阳极微生物电解池/
氢发酵废水

Abstract:To enhance the hydrogen production rate of microbial electrolysis cell (MEC) to treat hydrogen fermentation effluent of corn straw, single chamber MEC with double anode was developed in this study. The anodes of MEC were first acclimated in microbial fuel cells (MFCs) using butyrate as substrate before moving into MEC, the key operational parameters of MEC were optimized for high efficient hydrogen yield in batch tests. The results showed that the maximum hydrogen production rate and COD removal rate were (5.31±0.13) m3·(m3·d)-1 and of (58±2)% at 0.8 V applied voltage, respectively. Of which the removal rates of acetate, butyrate, propionate, and ethanol reached (95±2)%, (76.2±0.8)%, (93±3)%, (98±1)%, respectively. Compared with single chamber MEC with one anode，the hydrogen production rate of single chamber MEC with double anode treating hydrogen fermentation effluent of corn straw increased by 1.22 times. In addition, the results also illustrated that the acclimation mode of the MEC anode biofilm had an important effect on its hydrogen production rate with hydrogen fermentation effluent of corn straw, and the MEC anode biofilm pre-acclimated with butyrate presented higher hydrogen production rate and COD removal rate than that of pre-acclimated with acetate.
Key words:microbial electrolysis cell/
hydrogen production rate/
single chamber microbial electrolysis cell with double anode/
hydrogen fermentation wastewater.

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刊出日期:2019-06-18

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单室双阳极微生物电解池利用氢发酵废水产氢

何盛东^1,,
陈思²,
樊耀亭²
1.郑州航空工业管理学院土木建筑学院，郑州 450006
2.郑州大学化学与分子工程学院，郑州 450001
基金项目: 国家自然科学基金资助项目21171147，50578148 河南省高等学校重点科研项目17A560012国家自然科学基金资助项目(21171147，50578148) 河南省高等学校重点科研项目（17A560012）
关键词: 微生物电解池/
产氢速率/
单室双阳极微生物电解池/
氢发酵废水
摘要:为提高微生物电解池(MEC)利用氢发酵废水产氢速率，以丁酸为底物在微生物燃料电池(MFC)中驯化富集阳极产电微生物，采用单室双阳极MEC处理玉米秸秆的氢发酵废水，通过对关键过程参数的优化，实现氢发酵废水高效产氢。结果表明，当外加电压为0.8 V时，产氢速率和玉米秸秆氢发酵废水中COD的去除率分别达到(5.31±0.13) m3·(m3·d)-1和(58±2)%。其中，乙酸、丁酸、丙酸、乙醇的去除率分别达到(95±2)%、(76.2±0.8)%、(93±3)%、(98±1)%。与单室单阳极MEC相比，单室双阳极MEC利用玉米秸秆氢发酵废水进行深度产氢的速率提高了1.22倍。此外，MEC生物阳极驯化方式对MEC利用玉米秸秆氢发酵废水产氢具有重要影响。与利用乙酸为底物驯化富集的生物阳极相比，以丁酸为底物驯化富集的生物阳极去除COD的能力和MEC产氢速率都有提高。

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