RESEARCH PROGRESS ON CAPROIC ACID PRODUCTION FROM ORGANIC WASTE BY ANAEROBIC FERMENTATION

ZHU Wen-bin; GAO Ming; YIN Zi-he; WU Chuan-fu; WANG Qun-hui

doi:10.13205/j.hjgc.202001020

Volume 38 Issue 1

Mar. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(1): 128-134

ZHU Wen-bin, GAO Ming, YIN Zi-he, WU Chuan-fu, WANG Qun-hui. RESEARCH PROGRESS ON CAPROIC ACID PRODUCTION FROM ORGANIC WASTE BY ANAEROBIC FERMENTATION[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(1): 128-134. doi: 10.13205/j.hjgc.202001020

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ZHU Wen-bin, GAO Ming, YIN Zi-he, WU Chuan-fu, WANG Qun-hui. RESEARCH PROGRESS ON CAPROIC ACID PRODUCTION FROM ORGANIC WASTE BY ANAEROBIC FERMENTATION[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(1): 128-134. doi: 10.13205/j.hjgc.202001020

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RESEARCH PROGRESS ON CAPROIC ACID PRODUCTION FROM ORGANIC WASTE BY ANAEROBIC FERMENTATION

doi: 10.13205/j.hjgc.202001020

ZHU Wen-bin¹,
GAO Ming^1,2,
YIN Zi-he²,
WU Chuan-fu^1,2,
WANG Qun-hui^{1,2
,
,}

1. Department of Environmental Engineering, School of Energy and Environmental Engineering, Beijing 100083, China;
2. Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, Beijing 100083, China

Received Date: 2019-05-28

Abstract

Abstract

High-value carboxylate synthesis during organic waste treatment via anaerobic fermentation technology has become more and more mature. Especially, as one of the final products, caproic acid gained much more attentions, because of its high added-value, easy separation and wide utilization. As the electron donors and acceptors were both required for caproic acid synthesis by microorganisms, in this paper, we firstly introduced the mechanism of caproic acid biosynthesis (the reverse β-oxidation pathway) with using ethanol and acetic acid as the electron donor and acceptor, respectively. Moreover, metabolic substrates and fermentation influencing factors (temperature, pH, HRT, competitive pathways, hydrogen partial pressure, substrates ratio and nitrogen sources) were summarized. Currently, caproic acid production by Clostridium kluyveri with using ethanol as the electron donor was quite mature. Further, we explored the metabolic mechanism of caproic acid synthesis with using lactic acid as electron donor, and developing the fermentation technology of caproic acid production from lactic acid were considered as a promising direction in the future.
- caproic acid,
- anaerobic fermentation,
- substrates,
- metabolic pathways,
- influencing factors

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References(39)

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