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Enhancing fermentative hydrogen production with the removal of volatile fatty acids by electrodialysis
Wei, Pengfei; Xia, Ao; Liao, Qiang; Sun, Chihe; Huang, Yun; Fu, Qian; Zhu, Xun; Lin, Richen
Date:
2018-05-08
Copyright:
© 2018 Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
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Access to this article is restricted until 24 months after publication by request of the publisher
Restriction lift date:
2020-05-08
Citation:
Wei, P., Xia, A., Liao, Q., Sun, C., Huang, Y., Fu, Q., Zhu, X. and Lin, R. (2018) 'Enhancing fermentative hydrogen production with the removal of volatile fatty acids by electrodialysis', Bioresource Technology, 263, pp. 437-443. doi: 10.1016/j.biortech.2018.05.030
Abstract:
A three-chamber electrodialysis bioreactor comprising fermentation, cathode and anode chambers was proposed to remove in situ volatile fatty acids during hydrogen fermentation. The electrodialysis voltage of 4 V resulted in a volumetric hydrogen productivity of 1878.0 mL/L from the fermentation chamber, which is 55.4% higher than that (1208.5 mL/L) of the control group without voltage applied. Gas production was not observed in the cathode and anode chambers throughout fermentation. By applying different voltages (0–6 V), the hydrogen content accumulated to 54.6%–84.7%, and it exhibited increases of 7.1%–66.4% compared with that of the control. Meanwhile, the maximum concentrations of acetate and butyrate in the fermentation chamber decreased to 10.3 and 13.1 mmol/L at a voltage of 4 V, respectively, which are 68.0% and 62.4% lower than that for the control.
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Except where otherwise noted, this item's license is described as © 2018 Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
