{"id":11552,"date":"2023-01-01T19:07:32","date_gmt":"2023-01-01T19:07:32","guid":{"rendered":"http:\/\/lequia-udg.com\/2023\/01\/01\/microbial-electrosynthesis-of-acetate-from-co2-in-three-chamber-cells-with-gas-diffusion-biocathode-under-moderate-saline-conditions\/"},"modified":"2024-04-16T17:11:13","modified_gmt":"2024-04-16T17:11:13","slug":"microbial-electrosynthesis-of-acetate-from-co2-in-three-chamber-cells-with-gas-diffusion-biocathode-under-moderate-saline-conditions","status":"publish","type":"post","link":"https:\/\/lequia-udg.com\/ca\/2023\/01\/01\/microbial-electrosynthesis-of-acetate-from-co2-in-three-chamber-cells-with-gas-diffusion-biocathode-under-moderate-saline-conditions\/","title":{"rendered":"Microbial electrosynthesis of acetate from CO2 in three-chamber cells with gas diffusion biocathode under moderate saline conditions"},"content":{"rendered":"\t\t
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\r\n\t\t\t\r\n\t\t\t\tAuthors: Dess\u00ec, Paolo a, b Send mail to Dess\u00ec P.; Buena\u00f1o-Vargas, Claribel c; Mart\u00ednez-Sosa, Santiago; Mills, Simon; Trego, Anna; Ijaz, Umer Z.; Pant, Deepak; Puig, Sebasti\u00e0; O'Flaherty, Vincent; Farr\u00e0s, Pau \r\n\t\t\t\r\n\t\t\t<\/h4>\r\n\t\t

\r\n\t\t\t\r\n\t\t\t\tMicrobial electrosynthesis of acetate from CO2 in three-chamber cells with gas diffusion biocathode under moderate saline conditions\r\n\t\t\t\r\n\t\t\t<\/h2>\r\n\t\t<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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The industrial adoption of microbial electrosynthesis (MES) is hindered by high overpotentials deriving from low electrolyte conductivity and inefficient cell designs. In this study, a mixed microbial consortium originating from an anaerobic digester operated under saline conditions (\u223c13 g L\u22121<\/sup>\u00a0NaCl) was adapted for acetate production from bicarbonate in galvanostatic (0.25 mA cm\u22122<\/sup>) H-type cells at 5, 10, 15, or 20 g L\u22121<\/sup>\u00a0NaCl concentration. The acetogenic communities were successfully enriched only at 5 and 10 g L\u22121<\/sup>\u00a0NaCl, revealing an inhibitory threshold of about 6 g L\u22121<\/sup>\u00a0Na+<\/sup>. The enriched planktonic communities were then used as inoculum for 3D printed, three-chamber cells equipped with a gas diffusion biocathode. The cells were fed with CO2<\/sub>\u00a0gas and operated galvanostatically (0.25 or 1.00 mA cm\u22122<\/sup>). The highest production rate of 55.4 g m\u22122<\/sup>\u00a0d\u22121<\/sup>\u00a0(0.89 g L\u22121<\/sup>\u00a0d\u22121<\/sup>), with 82.4% Coulombic efficiency, was obtained at 5 g L\u22121<\/sup>\u00a0NaCl concentration and 1 mA cm\u22122<\/sup>\u00a0applied current, achieving an average acetate production of 44.7 kg MWh\u22121<\/sup>. Scanning electron microscopy and 16S rRNA sequencing analysis confirmed the formation of a cathodic biofilm dominated by Acetobacterium sp. Finally, three 3D printed cells were hydraulically connected in series to simulate an MES stack, achieving three-fold production rates than with the single cell at 0.25 mA cm\u22122<\/sup>. This confirms that three-chamber MES cells are an efficient and scalable technology for CO2<\/sub>\u00a0bio-electro recycling to acetate and that moderate saline conditions (5 g L\u22121<\/sup>\u00a0NaCl) can help reduce their power demand while preserving the activity of acetogens.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tInformaci\u00f3 addicional<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t
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Year:<\/strong><\/td>\n2023<\/td>\n<\/tr>\n
Authors:<\/strong><\/td>\nDess\u00ec, Paolo a, b Send mail to Dess\u00ec P.; Buena\u00f1o-Vargas, Claribel c; Mart\u00ednez-Sosa, Santiago; Mills, Simon; Trego, Anna; Ijaz, Umer Z.; Pant, Deepak; Puig, Sebasti\u00e0; O’Flaherty, Vincent; Farr\u00e0s, Pau<\/td>\n<\/tr>\n
Reference:<\/strong><\/td>\nEnvironmental Science and Ecotechnology, Volume 16, Article number 100261<\/td>\n<\/tr>\n
Link:<\/strong><\/td>\nhttp:\/\/dx.doi.org\/10.1016\/j.ese.2023.100261<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Authors: Dess\u00ec, Paolo a, b Send mail to Dess\u00ec P.; Buena\u00f1o-Vargas, Claribel c; Mart\u00ednez-Sosa, Santiago; Mills, Simon; Trego, Anna; Ijaz, Umer Z.; Pant, Deepak; Puig, Sebasti\u00e0; O’Flaherty, Vincent; Farr\u00e0s, Pau Microbial electrosynthesis of acetate from CO2 in three-chamber cells with gas diffusion biocathode under moderate saline conditions The industrial adoption of microbial electrosynthesis (MES) is … Microbial electrosynthesis of acetate from CO2 in three-chamber cells with gas diffusion biocathode under moderate saline conditions<\/span>“>Continue reading Microbial electrosynthesis of acetate from CO2 in three-chamber cells with gas diffusion biocathode under moderate saline conditions<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[64],"tags":[],"class_list":["post-11552","post","type-post","status-publish","format-standard","hentry","category-articles-ca"],"_links":{"self":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/11552","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/comments?post=11552"}],"version-history":[{"count":1,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/11552\/revisions"}],"predecessor-version":[{"id":11553,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/11552\/revisions\/11553"}],"wp:attachment":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/media?parent=11552"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/categories?post=11552"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/tags?post=11552"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}