Modeling cometabolism of hexavalent chromium by iron reducing bacteria in tertiary substrate system

Abstract In this study, a bacterial strain Serratia sp. was employed for the reduction of synthetically prepared different concentration of Cr(VI) solution (10, 25, 40, 50 and 100 mg/L). Cometabolism study have been carried out in the binary substrate system as well as in the tertiary substrate syst...

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Autores principales:	Shivangi Upadhyay, Alok Sinha
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/589db9a7a8a441128c4d6bc437e34186
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spelling	oai:doaj.org-article:589db9a7a8a441128c4d6bc437e341862021-12-02T16:53:11ZModeling cometabolism of hexavalent chromium by iron reducing bacteria in tertiary substrate system10.1038/s41598-021-90137-22045-2322https://doaj.org/article/589db9a7a8a441128c4d6bc437e341862021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90137-2https://doaj.org/toc/2045-2322Abstract In this study, a bacterial strain Serratia sp. was employed for the reduction of synthetically prepared different concentration of Cr(VI) solution (10, 25, 40, 50 and 100 mg/L). Cometabolism study have been carried out in the binary substrate system as well as in the tertiary substrate system. The results revealed that when glucose was added as a co-substrate, at low Cr(VI) concentration, complete reduction was achieved followed by increased biomass growth, but when Cr(VI) concentration was increased to 100 mg/L, the reduction decline to 93%. But in presence of high carbon iron filings (HCIF) as co-substrate even at higher Cr(VI) concentration i.e. 100 mg/L, 100% reduction was achieved and the cell growth continued till 124 h. The study was illustrated via Monod growth kinetic model for tertiary substrate system and the kinetic parameters revealed that the HCIF and glucose combination showed least inhibition to hexavalent chromium reduction by Serratia sp.Shivangi UpadhyayAlok SinhaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shivangi Upadhyay Alok Sinha Modeling cometabolism of hexavalent chromium by iron reducing bacteria in tertiary substrate system
description	Abstract In this study, a bacterial strain Serratia sp. was employed for the reduction of synthetically prepared different concentration of Cr(VI) solution (10, 25, 40, 50 and 100 mg/L). Cometabolism study have been carried out in the binary substrate system as well as in the tertiary substrate system. The results revealed that when glucose was added as a co-substrate, at low Cr(VI) concentration, complete reduction was achieved followed by increased biomass growth, but when Cr(VI) concentration was increased to 100 mg/L, the reduction decline to 93%. But in presence of high carbon iron filings (HCIF) as co-substrate even at higher Cr(VI) concentration i.e. 100 mg/L, 100% reduction was achieved and the cell growth continued till 124 h. The study was illustrated via Monod growth kinetic model for tertiary substrate system and the kinetic parameters revealed that the HCIF and glucose combination showed least inhibition to hexavalent chromium reduction by Serratia sp.
format	article
author	Shivangi Upadhyay Alok Sinha
author_facet	Shivangi Upadhyay Alok Sinha
author_sort	Shivangi Upadhyay
title	Modeling cometabolism of hexavalent chromium by iron reducing bacteria in tertiary substrate system
title_short	Modeling cometabolism of hexavalent chromium by iron reducing bacteria in tertiary substrate system
title_full	Modeling cometabolism of hexavalent chromium by iron reducing bacteria in tertiary substrate system
title_fullStr	Modeling cometabolism of hexavalent chromium by iron reducing bacteria in tertiary substrate system
title_full_unstemmed	Modeling cometabolism of hexavalent chromium by iron reducing bacteria in tertiary substrate system
title_sort	modeling cometabolism of hexavalent chromium by iron reducing bacteria in tertiary substrate system
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/589db9a7a8a441128c4d6bc437e34186
work_keys_str_mv	AT shivangiupadhyay modelingcometabolismofhexavalentchromiumbyironreducingbacteriaintertiarysubstratesystem AT aloksinha modelingcometabolismofhexavalentchromiumbyironreducingbacteriaintertiarysubstratesystem
_version_	1718382858925506560

Modeling cometabolism of hexavalent chromium by iron reducing bacteria in tertiary substrate system

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