Effect of Elevated Eydrogen Partial Pressure on Mixed Culture Homoacetogenesis

This study aimed to systematically investigate the effect of elevated hydrogen partial pressure on mixed culture homoacetogenesis in the range of 1–25 bar. Seven batch experiments were performed at different initial headspace pressures, i.e., 1, 3, 5, 10, 15, 20, and 25 bar. The 15 bar batch showed...

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Autores principales:	Vasan Sivalingam, Tone Haugen, Alexander Wentzel, Carlos Dinamarca
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Syngas fermentation CO2 utilization Wood-Ljungdahl High-pressure Hydrogen Mixed culture Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/cb928366beb0444e814c5859c9609cbe
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id	oai:doaj.org-article:cb928366beb0444e814c5859c9609cbe
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spelling	oai:doaj.org-article:cb928366beb0444e814c5859c9609cbe2021-11-26T04:39:26ZEffect of Elevated Eydrogen Partial Pressure on Mixed Culture Homoacetogenesis2590-140010.1016/j.cesx.2021.100118https://doaj.org/article/cb928366beb0444e814c5859c9609cbe2021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2590140021000319https://doaj.org/toc/2590-1400This study aimed to systematically investigate the effect of elevated hydrogen partial pressure on mixed culture homoacetogenesis in the range of 1–25 bar. Seven batch experiments were performed at different initial headspace pressures, i.e., 1, 3, 5, 10, 15, 20, and 25 bar. The 15 bar batch showed the highest gas uptake rate (6.22 mol h−1L−1) and volatile fatty acids synthesis (3.55 g L−1) by a final microbial consortium that was found to be largely reduced in complexity compared to the original inoculum culture and dominated by members of the Pseudomonadaceae and Clostridiaceae. Product distribution shifted from acetate to C3-C5 acids at a pressure above 15 bar. 15 bar was found to be the optimum elevated pressure for the used mixed culture fermentation medium and biodiversity used in this study, and pressure above 15 bar inhibited the microbial consortia and resulted in lowered gas uptake rate and product synthesis.Vasan SivalingamTone HaugenAlexander WentzelCarlos DinamarcaElsevierarticleSyngas fermentationCO2 utilizationWood-LjungdahlHigh-pressureHydrogenMixed cultureChemical engineeringTP155-156ENChemical Engineering Science: X, Vol 12, Iss , Pp 100118- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Syngas fermentation CO2 utilization Wood-Ljungdahl High-pressure Hydrogen Mixed culture Chemical engineering TP155-156
spellingShingle	Syngas fermentation CO2 utilization Wood-Ljungdahl High-pressure Hydrogen Mixed culture Chemical engineering TP155-156 Vasan Sivalingam Tone Haugen Alexander Wentzel Carlos Dinamarca Effect of Elevated Eydrogen Partial Pressure on Mixed Culture Homoacetogenesis
description	This study aimed to systematically investigate the effect of elevated hydrogen partial pressure on mixed culture homoacetogenesis in the range of 1–25 bar. Seven batch experiments were performed at different initial headspace pressures, i.e., 1, 3, 5, 10, 15, 20, and 25 bar. The 15 bar batch showed the highest gas uptake rate (6.22 mol h−1L−1) and volatile fatty acids synthesis (3.55 g L−1) by a final microbial consortium that was found to be largely reduced in complexity compared to the original inoculum culture and dominated by members of the Pseudomonadaceae and Clostridiaceae. Product distribution shifted from acetate to C3-C5 acids at a pressure above 15 bar. 15 bar was found to be the optimum elevated pressure for the used mixed culture fermentation medium and biodiversity used in this study, and pressure above 15 bar inhibited the microbial consortia and resulted in lowered gas uptake rate and product synthesis.
format	article
author	Vasan Sivalingam Tone Haugen Alexander Wentzel Carlos Dinamarca
author_facet	Vasan Sivalingam Tone Haugen Alexander Wentzel Carlos Dinamarca
author_sort	Vasan Sivalingam
title	Effect of Elevated Eydrogen Partial Pressure on Mixed Culture Homoacetogenesis
title_short	Effect of Elevated Eydrogen Partial Pressure on Mixed Culture Homoacetogenesis
title_full	Effect of Elevated Eydrogen Partial Pressure on Mixed Culture Homoacetogenesis
title_fullStr	Effect of Elevated Eydrogen Partial Pressure on Mixed Culture Homoacetogenesis
title_full_unstemmed	Effect of Elevated Eydrogen Partial Pressure on Mixed Culture Homoacetogenesis
title_sort	effect of elevated eydrogen partial pressure on mixed culture homoacetogenesis
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/cb928366beb0444e814c5859c9609cbe
work_keys_str_mv	AT vasansivalingam effectofelevatedeydrogenpartialpressureonmixedculturehomoacetogenesis AT tonehaugen effectofelevatedeydrogenpartialpressureonmixedculturehomoacetogenesis AT alexanderwentzel effectofelevatedeydrogenpartialpressureonmixedculturehomoacetogenesis AT carlosdinamarca effectofelevatedeydrogenpartialpressureonmixedculturehomoacetogenesis
_version_	1718409867685789696

Effect of Elevated Eydrogen Partial Pressure on Mixed Culture Homoacetogenesis

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