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Fe(3)O(4)/granular activated carbon as an efficient three-dimensional electrode to enhance the microbial electrosynthesis of acetate from CO(2)

Microbial electrosynthesis (MES) allows the transformation of CO(2) into value-added products by coupling with renewable energy. The enhancement in the microbial activity and electron transfer rate via a new electrode modification method is essential for developing MES. Here, three groups of granula...

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Autores principales: Zhu, Hao, Dong, Zhiwei, Huang, Qiong, Song, Tian-shun, Xie, Jingjing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9073640/
https://www.ncbi.nlm.nih.gov/pubmed/35529973
http://dx.doi.org/10.1039/c9ra06255f
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author Zhu, Hao
Dong, Zhiwei
Huang, Qiong
Song, Tian-shun
Xie, Jingjing
author_facet Zhu, Hao
Dong, Zhiwei
Huang, Qiong
Song, Tian-shun
Xie, Jingjing
author_sort Zhu, Hao
collection PubMed
description Microbial electrosynthesis (MES) allows the transformation of CO(2) into value-added products by coupling with renewable energy. The enhancement in the microbial activity and electron transfer rate via a new electrode modification method is essential for developing MES. Here, three groups of granular activated carbon decorated by Fe(3)O(4) (Fe(3)O(4)/GAC) with mass fractions of 23%, 38% and 50% were prepared and compared with bare GAC. The volumetric acetate production rate of MES with Fe(3)O(4)/GAC-38% was the highest (0.171 g L(−1) d(−1)), which was 1.4 times higher that of the control (bare GAC), and the final acetate concentration reached 5.14 g L(−1) within 30 days. Linear sweep voltammetry and microbial community analyses suggested that Fe(3)O(4)/GAC facilitates extracellular electron transfer and improves the enrichment of electrochemically active bacteria. Fe(3)O(4)/GAC is an effective three-dimensional electrode material that enhances biofilm activity on GAC and improves MES efficiency.
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spelling pubmed-90736402022-05-06 Fe(3)O(4)/granular activated carbon as an efficient three-dimensional electrode to enhance the microbial electrosynthesis of acetate from CO(2) Zhu, Hao Dong, Zhiwei Huang, Qiong Song, Tian-shun Xie, Jingjing RSC Adv Chemistry Microbial electrosynthesis (MES) allows the transformation of CO(2) into value-added products by coupling with renewable energy. The enhancement in the microbial activity and electron transfer rate via a new electrode modification method is essential for developing MES. Here, three groups of granular activated carbon decorated by Fe(3)O(4) (Fe(3)O(4)/GAC) with mass fractions of 23%, 38% and 50% were prepared and compared with bare GAC. The volumetric acetate production rate of MES with Fe(3)O(4)/GAC-38% was the highest (0.171 g L(−1) d(−1)), which was 1.4 times higher that of the control (bare GAC), and the final acetate concentration reached 5.14 g L(−1) within 30 days. Linear sweep voltammetry and microbial community analyses suggested that Fe(3)O(4)/GAC facilitates extracellular electron transfer and improves the enrichment of electrochemically active bacteria. Fe(3)O(4)/GAC is an effective three-dimensional electrode material that enhances biofilm activity on GAC and improves MES efficiency. The Royal Society of Chemistry 2019-10-23 /pmc/articles/PMC9073640/ /pubmed/35529973 http://dx.doi.org/10.1039/c9ra06255f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Zhu, Hao
Dong, Zhiwei
Huang, Qiong
Song, Tian-shun
Xie, Jingjing
Fe(3)O(4)/granular activated carbon as an efficient three-dimensional electrode to enhance the microbial electrosynthesis of acetate from CO(2)
title Fe(3)O(4)/granular activated carbon as an efficient three-dimensional electrode to enhance the microbial electrosynthesis of acetate from CO(2)
title_full Fe(3)O(4)/granular activated carbon as an efficient three-dimensional electrode to enhance the microbial electrosynthesis of acetate from CO(2)
title_fullStr Fe(3)O(4)/granular activated carbon as an efficient three-dimensional electrode to enhance the microbial electrosynthesis of acetate from CO(2)
title_full_unstemmed Fe(3)O(4)/granular activated carbon as an efficient three-dimensional electrode to enhance the microbial electrosynthesis of acetate from CO(2)
title_short Fe(3)O(4)/granular activated carbon as an efficient three-dimensional electrode to enhance the microbial electrosynthesis of acetate from CO(2)
title_sort fe(3)o(4)/granular activated carbon as an efficient three-dimensional electrode to enhance the microbial electrosynthesis of acetate from co(2)
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9073640/
https://www.ncbi.nlm.nih.gov/pubmed/35529973
http://dx.doi.org/10.1039/c9ra06255f
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