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Hybrid electron donors of ethanol and lactate stimulation chain elongation in microbial electrosynthesis with different inoculants.

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Title: Hybrid electron donors of ethanol and lactate stimulation chain elongation in microbial electrosynthesis with different inoculants.
Authors: Zhang, Kang1,2 (AUTHOR), Qiu, Zhenyu1,3 (AUTHOR), Luo, Dan1,2 (AUTHOR), Song, Tianshun1,2 (AUTHOR) tshsong@njtech.edu.cn, Xie, Jingjing1,2,4 (AUTHOR) xiej@njtech.edu.cn
Source: Renewable Energy: An International Journal. Jan2023, Vol. 202, p942-951. 10p.
Subject Terms: *Ethanol, *Carbon dioxide, Electrosynthesis, Electron donors, Lactates, Technological innovations, Mass transfer, Lactation
Abstract: Microbial electrosynthesis (MES) is a new technology that uses electrically driven biocatalysts to convert CO 2 into valuable chemicals. However, C2 as the primary product limits the development of MES. To address this issue, ethanol and lactate as additional electron donor (ED) were introduced into MES systems with different inoculants (anaerobic sludge and sediment) for chain elongation. The hybrid EDs in MES with sediment can produce the highest concentrations of butyrate (6.30 g/L) and caproate (1.60 g/L), and the corresponding total electron recovery efficiency reached the maximum value (94.51 ± 1.04%). Hybrid EDs not only provided sufficient reducing force, but also enhanced the gas mass transfer rate by releasing CO 2 from lactate in situ. Metagenomic analysis showed that reverse β-oxidation pathway and fatty acid biosynthesis pathway were the main pathways. This study demonstrated that the addition of ethanol and lactate is promising method for improving the performance of MES. [ABSTRACT FROM AUTHOR]
Copyright of Renewable Energy: An International Journal is the property of Pergamon Press - An Imprint of Elsevier Science 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.)
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DbLabel: GreenFILE
An: 160864609
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Hybrid electron donors of ethanol and lactate stimulation chain elongation in microbial electrosynthesis with different inoculants.
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  Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Kang%22">Zhang, Kang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qiu%2C+Zhenyu%22">Qiu, Zhenyu</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Luo%2C+Dan%22">Luo, Dan</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="%22Xie%2C+Jingjing%22">Xie, Jingjing</searchLink><relatesTo>1,2,4</relatesTo> (AUTHOR)<i> xiej@njtech.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Renewable+Energy%3A+An+International+Journal%22">Renewable Energy: An International Journal</searchLink>. Jan2023, Vol. 202, p942-951. 10p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Ethanol%22">Ethanol</searchLink><br />*<searchLink fieldCode="DE" term="%22Carbon+dioxide%22">Carbon dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Electrosynthesis%22">Electrosynthesis</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+donors%22">Electron donors</searchLink><br /><searchLink fieldCode="DE" term="%22Lactates%22">Lactates</searchLink><br /><searchLink fieldCode="DE" term="%22Technological+innovations%22">Technological innovations</searchLink><br /><searchLink fieldCode="DE" term="%22Mass+transfer%22">Mass transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Lactation%22">Lactation</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Microbial electrosynthesis (MES) is a new technology that uses electrically driven biocatalysts to convert CO 2 into valuable chemicals. However, C2 as the primary product limits the development of MES. To address this issue, ethanol and lactate as additional electron donor (ED) were introduced into MES systems with different inoculants (anaerobic sludge and sediment) for chain elongation. The hybrid EDs in MES with sediment can produce the highest concentrations of butyrate (6.30 g/L) and caproate (1.60 g/L), and the corresponding total electron recovery efficiency reached the maximum value (94.51 ± 1.04%). Hybrid EDs not only provided sufficient reducing force, but also enhanced the gas mass transfer rate by releasing CO 2 from lactate in situ. Metagenomic analysis showed that reverse β-oxidation pathway and fatty acid biosynthesis pathway were the main pathways. This study demonstrated that the addition of ethanol and lactate is promising method for improving the performance of MES. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Renewable Energy: An International Journal is the property of Pergamon Press - An Imprint of Elsevier Science 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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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.renene.2022.11.123
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      – Code: eng
        Text: English
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        PageCount: 10
        StartPage: 942
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      – SubjectFull: Ethanol
        Type: general
      – SubjectFull: Carbon dioxide
        Type: general
      – SubjectFull: Electrosynthesis
        Type: general
      – SubjectFull: Electron donors
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      – SubjectFull: Lactates
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      – SubjectFull: Technological innovations
        Type: general
      – SubjectFull: Mass transfer
        Type: general
      – SubjectFull: Lactation
        Type: general
    Titles:
      – TitleFull: Hybrid electron donors of ethanol and lactate stimulation chain elongation in microbial electrosynthesis with different inoculants.
        Type: main
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            NameFull: Zhang, Kang
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            NameFull: Qiu, Zhenyu
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            NameFull: Luo, Dan
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            NameFull: Song, Tianshun
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            NameFull: Xie, Jingjing
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            – D: 01
              M: 01
              Text: Jan2023
              Type: published
              Y: 2023
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              Value: 202
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            – TitleFull: Renewable Energy: An International Journal
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