{"id":10841,"date":"2024-01-01T18:31:29","date_gmt":"2024-01-01T18:31:29","guid":{"rendered":"http:\/\/lequia-udg.com\/2024\/01\/01\/selective-butyric-acid-production-from-co2-and-its-upgrade-to-butanol-in-microbial-electrosynthesis-cells\/"},"modified":"2024-03-20T16:26:23","modified_gmt":"2024-03-20T16:26:23","slug":"selective-butyric-acid-production-from-co2-and-its-upgrade-to-butanol-in-microbial-electrosynthesis-cells","status":"publish","type":"post","link":"https:\/\/lequia-udg.com\/ca\/2024\/01\/01\/selective-butyric-acid-production-from-co2-and-its-upgrade-to-butanol-in-microbial-electrosynthesis-cells\/","title":{"rendered":"Selective butyric acid production from CO2 and its upgrade to butanol in microbial electrosynthesis cells\u00a0"},"content":{"rendered":"\t\t
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\r\n\t\t\t\r\n\t\t\t\tAuthors: Romans-Casas, Meritxell; Feliu-Paradeda, Laura; Tedesco, Michele; Hamelers, Hubertus V.M.; Ba\u00f1eras, Lluis; Balaguer, M. Dolors; Puig, Sebasti\u00e0; Dess\u00ec, Paolo \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\tSelective butyric acid production from CO2 and its upgrade to butanol in microbial electrosynthesis cells\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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Microbial electrosynthesis (MES) is a promising carbon utilization technology, but the low-value products (i.e., acetate or methane) and the high electric power demand hinder its industrial adoption. In this study, electrically efficient MES cells with a low ohmic resistance of 15.7 m\u03a9 m2<\/sup>\u00a0were operated galvanostatically in fed-batch mode, alternating periods of high CO2<\/sub>\u00a0and H2<\/sub>\u00a0availability. This promoted acetic acid and ethanol production, ultimately triggering selective (78% on a carbon basis) butyric acid production via chain elongation. An average production rate of 14.5 g m\u22122<\/sup>\u00a0d\u22121<\/sup>\u00a0was obtained at an applied current of 1.0 or 1.5 mA cm\u22122<\/sup>, being Megasphaera sp. the key chain elongating player. Inoculating a second cell with the catholyte containing the enriched community resulted in butyric acid production at the same rate as the previous cell, but the lag phase was reduced by 82%. Furthermore, interrupting the CO2<\/sub>\u00a0feeding and setting a constant pH2<\/sub>\u00a0of 1.7\u20131.8 atm in the cathode compartment triggered solventogenic butanol production at a pH below 4.8. The efficient cell design resulted in average cell voltages of 2.6\u20132.8 V and a remarkably low electric energy requirement of 34.6 kWhel<\/sub>\u00a0kg\u22121<\/sup>\u00a0of butyric acid produced, despite coulombic efficiencies being restricted to 45% due to the cross-over of O2<\/sub>\u00a0and H2<\/sub>\u00a0through the membrane. In conclusion, this study revealed the optimal operating conditions to achieve energy-efficient butyric acid production from CO2<\/sub>\u00a0and suggested a strategy to further upgrade it to valuable butanol.<\/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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Any:<\/strong><\/td>\n2024<\/td>\n<\/tr>\n
Autors:<\/strong><\/td>\nRomans-Casas, Meritxell; Feliu-Paradeda, Laura; Tedesco, Michele; Hamelers, Hubertus V.M.; Ba\u00f1eras, Lluis; Balaguer, M. Dolors; Puig, Sebasti\u00e0; Dess\u00ec, Paolo<\/td>\n<\/tr>\n
Reference:<\/strong><\/td>\nEnvironmental Science and Ecotechnology, 17, 100303<\/td>\n<\/tr>\n
Link:<\/strong><\/td>\nhttp:\/\/dx.doi.org\/10.1016\/j.ese.2023.100303<\/a><\/td>\n<\/tr>\n
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Authors: Romans-Casas, Meritxell; Feliu-Paradeda, Laura; Tedesco, Michele; Hamelers, Hubertus V.M.; Ba\u00f1eras, Lluis; Balaguer, M. Dolors; Puig, Sebasti\u00e0; Dess\u00ec, Paolo Selective butyric acid production from CO2 and its upgrade to butanol in microbial electrosynthesis cells Microbial electrosynthesis (MES) is a promising carbon utilization technology, but the low-value products (i.e., acetate or methane) and the high electric … Selective butyric acid production from CO2 and its upgrade to butanol in microbial electrosynthesis cells\u00a0<\/span>“>Continue reading Selective butyric acid production from CO2 and its upgrade to butanol in microbial electrosynthesis cells\u00a0<\/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-10841","post","type-post","status-publish","format-standard","hentry","category-articles-ca"],"_links":{"self":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/10841","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=10841"}],"version-history":[{"count":1,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/10841\/revisions"}],"predecessor-version":[{"id":10842,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/10841\/revisions\/10842"}],"wp:attachment":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/media?parent=10841"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/categories?post=10841"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/tags?post=10841"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}