Efficient removal of heavy metals by synergistic actions of microorganisms and waste molasses.

Adsorption Humic Substances Metals, Heavy Molasses Waste Disposal, Fluid Wastewater Water Pollutants, Chemical
Biological removal Heavy metal Microorganism Waste molasses

Journal

Bioresource technology
ISSN: 1873-2976
Titre abrégé: Bioresour Technol
Pays: England
ID NLM: 9889523

Informations de publication

Date de publication:
Apr 2020
Historique:
received: 03 12 2019
revised: 06 01 2020
accepted: 10 01 2020
pubmed: 26 1 2020
medline: 19 2 2020
entrez: 26 1 2020
Statut: ppublish

Résumé

In this study, two bacteria strains (Enterobacter sp. SL and Acinetobacter sp. SL-1) and waste molasses (carbon source) were used to remove Zn(II), Cd(II), Cr(VI), and Cr(Total) in the liquid solution (87 mg·L). The results showed the removal efficiencies of Cr(Total) and Cr(VI) could reach over 98.00% after reaction, and the removal efficiencies of Zn(II) and Cd(II) were all about 90.00% by the synergistic actions of microorganisms and waste molasses. In this process, waste molasses provides nutrients for microorganisms and has the characteristics and capability of Cr, Zn, and Cd. Microorganisms mainly use biological adsorption (36.95% and 45.69%) and metabolism (24.37% and 17.05% by producing humic-acid and fulvic-acid like substances) to remove Zn(II) and Cd(II), while waste molasses could to remove Cr(Total) (81.24%) and Cr(VI) (75.90%). This study has potential application value for the treatment of wastewater containing high concentrations of heavy metals.

Identifiants

DOI: 10.1016/j.biortech.2020.122797 PMID: 31981810
pubmed: 31981810
pii: S0960-8524(20)30066-3
doi: 10.1016/j.biortech.2020.122797
pii:
doi:

Substances chimiques

Humic Substances 0
Metals, Heavy 0
Waste Water 0
Water Pollutants, Chemical 0

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

122797

Informations de copyright

Copyright © 2020 Elsevier Ltd. All rights reserved.

Déclaration de conflit d'intérêts

Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Auteurs

Yan Sun (Y)

Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Ministry of Education, PR China; Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan 430074, PR China.

Jirong Lan (J)

Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Ministry of Education, PR China; Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan 430074, PR China.

Yaguang Du (Y)

Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan 430074, PR China. Electronic address: dydu666@mail.scuec.edu.cn.

Zhuang Li (Z)

Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan 430074, PR China.

Xi Liao (X)

Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan 430074, PR China.

Dongyun Du (D)

Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Ministry of Education, PR China; Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan 430074, PR China.

Hengpeng Ye (H)

Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Ministry of Education, PR China; Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan 430074, PR China.

Tian C Zhang (TC)

Civil & Environmental Engineering Department, College of Engineering, University of Nebraska-Lincoln, Omaha, NE 68182, USA.

Shaohua Chen (S)

Key Laboratory of Catalysis Conversion and Energy Materials Chemistry of Ministry of Education, PR China; Engineering Research Center for Heavy Metal Pollution Control of Hubei Province, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan 430074, PR China.

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Classifications MeSH

questionsmedicales.fr › Phénomènes chimiques › Adsorption › Efficient removal of heavy metals by...
questionsmedicales.fr › Mélanges complexes › Substances humiques › Efficient removal of heavy metals by...
questionsmedicales.fr › Produits chimiques inorganiques › Métaux › Métaux lourds › Efficient removal of heavy metals by...
questionsmedicales.fr › Aliments et boissons › Aliments › Mélasses › Efficient removal of heavy metals by...
questionsmedicales.fr › Environnement et santé publique › Santé publique › Amélioration du niveau sanitaire › Génie sanitaire › Gestion des déchets › Élimination des déchets › Élimination des déchets liquides › Efficient removal of heavy metals by...
questionsmedicales.fr › Environnement et santé publique › Santé publique › Pollution de l'environnement › Déchets › Eaux usées › Efficient removal of heavy metals by...
questionsmedicales.fr › Actions chimiques et utilisations › Actions toxiques › Polluants environnementaux › Polluants de l'eau › Polluants chimiques de l'eau › Efficient removal of heavy metals by...