Enhancing microbial electrosynthesis by releasing extracellular polymeric substances: Novel strategy through extracellular electron transfer improvement.
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| Title: | Enhancing microbial electrosynthesis by releasing extracellular polymeric substances: Novel strategy through extracellular electron transfer improvement. |
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| Authors: | Luo, Dan1,2 (AUTHOR), Zhang, Kang1,2 (AUTHOR), Song, Tianshun1,2,3 (AUTHOR) tshsong@njtech.edu.cn, Xie, Jingjing1,2,4 (AUTHOR) xiej@njtech.edu.cn |
| Source: | Biochemical Engineering Journal. Jun2022, Vol. 184, pN.PAG-N.PAG. 1p. |
| Subjects: | Charge exchange, Electrosynthesis, Nonionic surfactants, Membrane permeability (Biology), Microbial communities, Carbon dioxide |
| Abstract: | Microbial electrosynthesis (MES) is a promising process in which microbes obtain electrons from electrodes, producing high value-added chemicals from CO 2. Electrons from the cathode are the only energy source for reducing CO 2 ; thus, the electron transfer rate is the key to the conversion efficiency of the entire MES system. Here, we report a strategy that promotes the release of extracellular polymeric substances (EPSs) by adding a surfactant to enhance microbial extracellular electron transfer (EET) in an MES system. The addition of the nonionic surfactant Tween 80 not only enables the cathode biofilm to secrete more EPSs, and thus, improve its electrochemical activity, but it also adjusts the composition of the mixed microbial community to promote the enrichment of the primary acetogen, namely, Acetobacterium. Consequently, the acetate production rate of the MES system with 80 mg/L Tween 80 addition was 1.42 times higher than that of the control, and its coulombic efficiency increased from 47.12 ± 2.71 % to 76.33 ± 1.08 %. This new strategy for releasing EPSs via surfactant treatment improves EET, and consequently, enhances MES efficiency. [Display omitted] • Tween 80 promotes the release of extracellular polymeric substances. • Tween 80 improves cell permeability on the biofilm. • Tween 80 adjusts the composition of the mixed microbial community. • Tween 80 improves the extracellular electron transfer efficiency of biofilms. [ABSTRACT FROM AUTHOR] |
| Copyright of Biochemical Engineering Journal is the property of Elsevier B.V. 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 |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 157253297 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Enhancing microbial electrosynthesis by releasing extracellular polymeric substances: Novel strategy through extracellular electron transfer improvement. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Luo%2C+Dan%22">Luo, Dan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Kang%22">Zhang, Kang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Tianshun%22">Song, Tianshun</searchLink><relatesTo>1,2,3</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> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Biochemical+Engineering+Journal%22">Biochemical Engineering Journal</searchLink>. Jun2022, Vol. 184, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Charge+exchange%22">Charge exchange</searchLink><br /><searchLink fieldCode="DE" term="%22Electrosynthesis%22">Electrosynthesis</searchLink><br /><searchLink fieldCode="DE" term="%22Nonionic+surfactants%22">Nonionic surfactants</searchLink><br /><searchLink fieldCode="DE" term="%22Membrane+permeability+%28Biology%29%22">Membrane permeability (Biology)</searchLink><br /><searchLink fieldCode="DE" term="%22Microbial+communities%22">Microbial communities</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+dioxide%22">Carbon dioxide</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Microbial electrosynthesis (MES) is a promising process in which microbes obtain electrons from electrodes, producing high value-added chemicals from CO 2. Electrons from the cathode are the only energy source for reducing CO 2 ; thus, the electron transfer rate is the key to the conversion efficiency of the entire MES system. Here, we report a strategy that promotes the release of extracellular polymeric substances (EPSs) by adding a surfactant to enhance microbial extracellular electron transfer (EET) in an MES system. The addition of the nonionic surfactant Tween 80 not only enables the cathode biofilm to secrete more EPSs, and thus, improve its electrochemical activity, but it also adjusts the composition of the mixed microbial community to promote the enrichment of the primary acetogen, namely, Acetobacterium. Consequently, the acetate production rate of the MES system with 80 mg/L Tween 80 addition was 1.42 times higher than that of the control, and its coulombic efficiency increased from 47.12 ± 2.71 % to 76.33 ± 1.08 %. This new strategy for releasing EPSs via surfactant treatment improves EET, and consequently, enhances MES efficiency. [Display omitted] • Tween 80 promotes the release of extracellular polymeric substances. • Tween 80 improves cell permeability on the biofilm. • Tween 80 adjusts the composition of the mixed microbial community. • Tween 80 improves the extracellular electron transfer efficiency of biofilms. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Biochemical Engineering Journal is the property of Elsevier B.V. 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: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.bej.2022.108496 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Charge exchange Type: general – SubjectFull: Electrosynthesis Type: general – SubjectFull: Nonionic surfactants Type: general – SubjectFull: Membrane permeability (Biology) Type: general – SubjectFull: Microbial communities Type: general – SubjectFull: Carbon dioxide Type: general Titles: – TitleFull: Enhancing microbial electrosynthesis by releasing extracellular polymeric substances: Novel strategy through extracellular electron transfer improvement. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Luo, Dan – PersonEntity: Name: NameFull: Zhang, Kang – PersonEntity: Name: NameFull: Song, Tianshun – PersonEntity: Name: NameFull: Xie, Jingjing IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 06 Text: Jun2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 1369703X Numbering: – Type: volume Value: 184 Titles: – TitleFull: Biochemical Engineering Journal Type: main |
| ResultId | 1 |
