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The effect of current on chemicals production in annular double-chamber microbial electrosynthesis reactor with ethanol as electron donor.

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Title: The effect of current on chemicals production in annular double-chamber microbial electrosynthesis reactor with ethanol as electron donor.
Authors: Cheng, Caiyun1,2 (AUTHOR), Qiu, Yijing1,2 (AUTHOR), Song, Tianshun1,2 (AUTHOR) tshsong@njtech.edu.cn, Li, Xiangling1,2 (AUTHOR), Xie, Jingjing1,2,3 (AUTHOR) xiej@njtech.edu.cn
Source: Bioprocess & Biosystems Engineering. Jun2026, Vol. 49 Issue 6, p1625-1635. 11p.
Subjects: Electric currents, Butyrates, Clostridium, Electron donors, Carbon dioxide reduction, Bioelectrochemistry
Abstract: The efficient production of C4 compounds (e.g., butyrate) from CO2 in microbial electrosynthesis (MES) systems faces persistent challenges. This study employed an annular double-chamber MES reactor with ethanol as electron donor to systematically investigate chemicals generation under three controlled currents (50 mA, 100 mA, and 150 mA). The results showed MES with 50 mA can produce the highest butyrate concentrations of 8.7 g/L with average yield of 0.62 g/L/d, and its electron recovery efficiency reached a maximum of 94.4%. In contrast, acetate became the primary product in MES at 100 mA and 150 mA. The elevated abundance of Clostridium_sensu_stricto_12 correlates with enhanced butyrate synthesis under 50 mA. Low current (50 mA) combined with minimized electrode spacing in a DC-powered annular double-chamber reactor significantly enhances C4 production efficiency. This study provides a new strategy for generating long carbon chain chemicals in MES. [ABSTRACT FROM AUTHOR]
Copyright of Bioprocess & Biosystems Engineering is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 195072750
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PubTypeId: academicJournal
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  Label: Title
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  Data: The effect of current on chemicals production in annular double-chamber microbial electrosynthesis reactor with ethanol as electron donor.
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  Data: <searchLink fieldCode="AR" term="%22Cheng%2C+Caiyun%22">Cheng, Caiyun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qiu%2C+Yijing%22">Qiu, Yijing</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Tianshun%22">Song, Tianshun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> tshsong@njtech.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Xiangling%22">Li, Xiangling</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xie%2C+Jingjing%22">Xie, Jingjing</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> xiej@njtech.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Bioprocess+%26+Biosystems+Engineering%22">Bioprocess & Biosystems Engineering</searchLink>. Jun2026, Vol. 49 Issue 6, p1625-1635. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Electric+currents%22">Electric currents</searchLink><br /><searchLink fieldCode="DE" term="%22Butyrates%22">Butyrates</searchLink><br /><searchLink fieldCode="DE" term="%22Clostridium%22">Clostridium</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+donors%22">Electron donors</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+dioxide+reduction%22">Carbon dioxide reduction</searchLink><br /><searchLink fieldCode="DE" term="%22Bioelectrochemistry%22">Bioelectrochemistry</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The efficient production of C4 compounds (e.g., butyrate) from CO2 in microbial electrosynthesis (MES) systems faces persistent challenges. This study employed an annular double-chamber MES reactor with ethanol as electron donor to systematically investigate chemicals generation under three controlled currents (50 mA, 100 mA, and 150 mA). The results showed MES with 50 mA can produce the highest butyrate concentrations of 8.7 g/L with average yield of 0.62 g/L/d, and its electron recovery efficiency reached a maximum of 94.4%. In contrast, acetate became the primary product in MES at 100 mA and 150 mA. The elevated abundance of Clostridium_sensu_stricto_12 correlates with enhanced butyrate synthesis under 50 mA. Low current (50 mA) combined with minimized electrode spacing in a DC-powered annular double-chamber reactor significantly enhances C4 production efficiency. This study provides a new strategy for generating long carbon chain chemicals in MES. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Bioprocess & Biosystems Engineering is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s00449-026-03344-4
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      – Code: eng
        Text: English
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        PageCount: 11
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      – SubjectFull: Electric currents
        Type: general
      – SubjectFull: Butyrates
        Type: general
      – SubjectFull: Clostridium
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      – SubjectFull: Electron donors
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      – SubjectFull: Carbon dioxide reduction
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      – SubjectFull: Bioelectrochemistry
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      – TitleFull: The effect of current on chemicals production in annular double-chamber microbial electrosynthesis reactor with ethanol as electron donor.
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            NameFull: Cheng, Caiyun
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            NameFull: Qiu, Yijing
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            NameFull: Li, Xiangling
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              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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