Vertical distribution of the toxic metal(loid)s chemical fraction and microbial community in waste heap at a nonferrous metal mining site

Vertical distribution of the toxic metal(loid)s chemical fraction and microbial community in waste heap at a nonferrous metal mining site

Over the past few decades, nonferrous mining has produced numerous waste rock and part of the waste that has not been properly treated was generally dumped at roadsides and hill slopes. However, the vertical distributions of toxic metal(loid)s and composition of microbial communities in waste heap a...

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Autores principales: Ziwen Guo, Jiejie Yang, Emmanuel Konadu Sarkodie, Kewei Li, Yan Deng, Delong Meng, Bo Miao, Hongwei Liu, Yili Liang, Huaqun Yin, Xueduan Liu, Luhua Jiang
Formato: article
Lenguaje:EN
Publicado: Elsevier 2021
Materias:
Mining site
Toxic metal(loid)s
Vertical distribution
Potential mobile fractions
Microbial community
Environmental pollution
TD172-193.5
Environmental sciences
GE1-350
Acceso en línea:https://doaj.org/article/5429b1dec34e4c90ac574a82fce2ed64
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spelling oai:doaj.org-article:5429b1dec34e4c90ac574a82fce2ed642021-12-02T04:58:57ZVertical distribution of the toxic metal(loid)s chemical fraction and microbial community in waste heap at a nonferrous metal mining site0147-651310.1016/j.ecoenv.2021.113037https://doaj.org/article/5429b1dec34e4c90ac574a82fce2ed642021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0147651321011490https://doaj.org/toc/0147-6513Over the past few decades, nonferrous mining has produced numerous waste rock and part of the waste that has not been properly treated was generally dumped at roadsides and hill slopes. However, the vertical distributions of toxic metal(loid)s and composition of microbial communities in waste heap and the under-laid pristine soil are rarely studied. In this work, the fraction-related distributions of toxic metal(loid)s were investigated at a waste heap profile and the indigenous microbial assemblages were also analyzed by Illumina sequencing of 16 s rRNA genes. Results showed that compared to the under-laid pristine soil, content of toxic metal(loid)s, especially Cd, As and Pb, in waste rock layer were higher. Most of As in subsoil existed as non-specifically sorbed and specifically-sorbed fractions, which could be ascribed to the migration from the upper layer. The mobility was significantly correlated with Eh, EC, clay content, CEC and the total content of metal(loid)s. Phyla Proteobacteria, Acidobacteria and Firmicutes dominated the microbial communities. The microbial community compositions at the genus level were similar, but their relative abundances were mainly influenced by pH, CEC, Eh, SOM, and bioavailability content of toxic metal(loid)s. Besides, microbial functions of elements (S, Fe, Mn and As) oxidation/reduction and metabolites (siderophore, biosurfactant, organic acid, phosphatase and urease) potentially were used for pollutants bioremediation.Ziwen GuoJiejie YangEmmanuel Konadu SarkodieKewei LiYan DengDelong MengBo MiaoHongwei LiuYili LiangHuaqun YinXueduan LiuLuhua JiangElsevierarticleMining siteToxic metal(loid)sVertical distributionPotential mobile fractionsMicrobial communityEnvironmental pollutionTD172-193.5Environmental sciencesGE1-350ENEcotoxicology and Environmental Safety, Vol 228, Iss , Pp 113037- (2021)
institution DOAJ
collection DOAJ
language EN
topic Mining site
Toxic metal(loid)s
Vertical distribution
Potential mobile fractions
Microbial community
Environmental pollution
TD172-193.5
Environmental sciences
GE1-350
spellingShingle Mining site
Toxic metal(loid)s
Vertical distribution
Potential mobile fractions
Microbial community
Environmental pollution
TD172-193.5
Environmental sciences
GE1-350
Ziwen Guo
Jiejie Yang
Emmanuel Konadu Sarkodie
Kewei Li
Yan Deng
Delong Meng
Bo Miao
Hongwei Liu
Yili Liang
Huaqun Yin
Xueduan Liu
Luhua Jiang
Vertical distribution of the toxic metal(loid)s chemical fraction and microbial community in waste heap at a nonferrous metal mining site
description Over the past few decades, nonferrous mining has produced numerous waste rock and part of the waste that has not been properly treated was generally dumped at roadsides and hill slopes. However, the vertical distributions of toxic metal(loid)s and composition of microbial communities in waste heap and the under-laid pristine soil are rarely studied. In this work, the fraction-related distributions of toxic metal(loid)s were investigated at a waste heap profile and the indigenous microbial assemblages were also analyzed by Illumina sequencing of 16 s rRNA genes. Results showed that compared to the under-laid pristine soil, content of toxic metal(loid)s, especially Cd, As and Pb, in waste rock layer were higher. Most of As in subsoil existed as non-specifically sorbed and specifically-sorbed fractions, which could be ascribed to the migration from the upper layer. The mobility was significantly correlated with Eh, EC, clay content, CEC and the total content of metal(loid)s. Phyla Proteobacteria, Acidobacteria and Firmicutes dominated the microbial communities. The microbial community compositions at the genus level were similar, but their relative abundances were mainly influenced by pH, CEC, Eh, SOM, and bioavailability content of toxic metal(loid)s. Besides, microbial functions of elements (S, Fe, Mn and As) oxidation/reduction and metabolites (siderophore, biosurfactant, organic acid, phosphatase and urease) potentially were used for pollutants bioremediation.
format article
author Ziwen Guo
Jiejie Yang
Emmanuel Konadu Sarkodie
Kewei Li
Yan Deng
Delong Meng
Bo Miao
Hongwei Liu
Yili Liang
Huaqun Yin
Xueduan Liu
Luhua Jiang
author_facet Ziwen Guo
Jiejie Yang
Emmanuel Konadu Sarkodie
Kewei Li
Yan Deng
Delong Meng
Bo Miao
Hongwei Liu
Yili Liang
Huaqun Yin
Xueduan Liu
Luhua Jiang
author_sort Ziwen Guo
title Vertical distribution of the toxic metal(loid)s chemical fraction and microbial community in waste heap at a nonferrous metal mining site
title_short Vertical distribution of the toxic metal(loid)s chemical fraction and microbial community in waste heap at a nonferrous metal mining site
title_full Vertical distribution of the toxic metal(loid)s chemical fraction and microbial community in waste heap at a nonferrous metal mining site
title_fullStr Vertical distribution of the toxic metal(loid)s chemical fraction and microbial community in waste heap at a nonferrous metal mining site
title_full_unstemmed Vertical distribution of the toxic metal(loid)s chemical fraction and microbial community in waste heap at a nonferrous metal mining site
title_sort vertical distribution of the toxic metal(loid)s chemical fraction and microbial community in waste heap at a nonferrous metal mining site
publisher Elsevier
publishDate 2021
url https://doaj.org/article/5429b1dec34e4c90ac574a82fce2ed64
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