Bioreduction of Cr(VI) Using Bacterial Consortia Isolated from a Municipal Wastewater Sludge Experiencing Cr(VI) Loading from an Abandoned Chrome Foundry

Due to the threat posed by Cr(VI) on humans and aquatic wildlife, the removal of this metal must be applied effectively and without causing an impact on the environment. Reduction of Cr(VI) using microorganisms has been proposed as an alternative technique for remediation of both soils and groundwat...

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Autores principales:	Buyisile Kholisa, Evans M.N. Chirwa
Formato:	article
Lenguaje:	EN
Publicado:	AIDIC Servizi S.r.l. 2021
Materias:	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
Acceso en línea:	https://doaj.org/article/3e17fe5ac03b4543bf101ea1ebc699cd
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spelling	oai:doaj.org-article:3e17fe5ac03b4543bf101ea1ebc699cd2021-11-15T21:49:00ZBioreduction of Cr(VI) Using Bacterial Consortia Isolated from a Municipal Wastewater Sludge Experiencing Cr(VI) Loading from an Abandoned Chrome Foundry10.3303/CET21880192283-9216https://doaj.org/article/3e17fe5ac03b4543bf101ea1ebc699cd2021-11-01T00:00:00Zhttps://www.cetjournal.it/index.php/cet/article/view/11812https://doaj.org/toc/2283-9216Due to the threat posed by Cr(VI) on humans and aquatic wildlife, the removal of this metal must be applied effectively and without causing an impact on the environment. Reduction of Cr(VI) using microorganisms has been proposed as an alternative technique for remediation of both soils and groundwater, owing to its environmental friendliness and low-cost. Extensive work on Cr(VI) reduction by microorganisms has been reported, however, most of these scholars have paid attention to pure cultures. In this study, a natural consortium of microbial cultures from a municipal wastewater sludge site was used to investigate the effect of initial Cr(VI) concentration and pH on the Cr(VI) removal by the consortia. The results show that the optimised bacterial consortium was resistant to greater than 400 mg/L Cr(VI) concentration with 50 mg/L being completely removed within 4 h of incubation. The consortia exhibited considerable Cr(VI) removal efficiency in the pH range from 2 to 11, with 100% removal being achieved at a pH value of 7. This study demonstrated that bacteria the bacterial consortium from municipal wastewater sludge could be used for Cr(VI) remediation. Thus, bioremediation is a viable, environmentally friendly technology for applications in hexavalent chromium contaminated site.Buyisile KholisaEvans M.N. ChirwaAIDIC Servizi S.r.l.articleChemical engineeringTP155-156Computer engineering. Computer hardwareTK7885-7895ENChemical Engineering Transactions, Vol 88 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
spellingShingle	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895 Buyisile Kholisa Evans M.N. Chirwa Bioreduction of Cr(VI) Using Bacterial Consortia Isolated from a Municipal Wastewater Sludge Experiencing Cr(VI) Loading from an Abandoned Chrome Foundry
description	Due to the threat posed by Cr(VI) on humans and aquatic wildlife, the removal of this metal must be applied effectively and without causing an impact on the environment. Reduction of Cr(VI) using microorganisms has been proposed as an alternative technique for remediation of both soils and groundwater, owing to its environmental friendliness and low-cost. Extensive work on Cr(VI) reduction by microorganisms has been reported, however, most of these scholars have paid attention to pure cultures. In this study, a natural consortium of microbial cultures from a municipal wastewater sludge site was used to investigate the effect of initial Cr(VI) concentration and pH on the Cr(VI) removal by the consortia. The results show that the optimised bacterial consortium was resistant to greater than 400 mg/L Cr(VI) concentration with 50 mg/L being completely removed within 4 h of incubation. The consortia exhibited considerable Cr(VI) removal efficiency in the pH range from 2 to 11, with 100% removal being achieved at a pH value of 7. This study demonstrated that bacteria the bacterial consortium from municipal wastewater sludge could be used for Cr(VI) remediation. Thus, bioremediation is a viable, environmentally friendly technology for applications in hexavalent chromium contaminated site.
format	article
author	Buyisile Kholisa Evans M.N. Chirwa
author_facet	Buyisile Kholisa Evans M.N. Chirwa
author_sort	Buyisile Kholisa
title	Bioreduction of Cr(VI) Using Bacterial Consortia Isolated from a Municipal Wastewater Sludge Experiencing Cr(VI) Loading from an Abandoned Chrome Foundry
title_short	Bioreduction of Cr(VI) Using Bacterial Consortia Isolated from a Municipal Wastewater Sludge Experiencing Cr(VI) Loading from an Abandoned Chrome Foundry
title_full	Bioreduction of Cr(VI) Using Bacterial Consortia Isolated from a Municipal Wastewater Sludge Experiencing Cr(VI) Loading from an Abandoned Chrome Foundry
title_fullStr	Bioreduction of Cr(VI) Using Bacterial Consortia Isolated from a Municipal Wastewater Sludge Experiencing Cr(VI) Loading from an Abandoned Chrome Foundry
title_full_unstemmed	Bioreduction of Cr(VI) Using Bacterial Consortia Isolated from a Municipal Wastewater Sludge Experiencing Cr(VI) Loading from an Abandoned Chrome Foundry
title_sort	bioreduction of cr(vi) using bacterial consortia isolated from a municipal wastewater sludge experiencing cr(vi) loading from an abandoned chrome foundry
publisher	AIDIC Servizi S.r.l.
publishDate	2021
url	https://doaj.org/article/3e17fe5ac03b4543bf101ea1ebc699cd
work_keys_str_mv	AT buyisilekholisa bioreductionofcrviusingbacterialconsortiaisolatedfromamunicipalwastewatersludgeexperiencingcrviloadingfromanabandonedchromefoundry AT evansmnchirwa bioreductionofcrviusingbacterialconsortiaisolatedfromamunicipalwastewatersludgeexperiencingcrviloadingfromanabandonedchromefoundry
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Bioreduction of Cr(VI) Using Bacterial Consortia Isolated from a Municipal Wastewater Sludge Experiencing Cr(VI) Loading from an Abandoned Chrome Foundry

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