Effectively reducing the bioavailability of heavy metals in disturbed sediment with biochar: In-situ remediation

The effect of biochar, derived from Phyllostachys pubescens (PP), on the bioavailability and release fluxes of Cd, Cu, and Zn in disturbed sediments was investigated. The content of Cd, Cu, and Zn in overlying water and pore water sharply increased after sediment disturbance. When biochar dose excee...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Chao Zhang, Fujie zhai, Baoqing Shan
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Biochar Sediment remediation Metals bioavailability Diffusion flux Bacterial communities Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/ba07c0f4df1a4fc79e82b48ad157e7ad
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:ba07c0f4df1a4fc79e82b48ad157e7ad
record_format	dspace
spelling	oai:doaj.org-article:ba07c0f4df1a4fc79e82b48ad157e7ad2021-12-02T05:04:16ZEffectively reducing the bioavailability of heavy metals in disturbed sediment with biochar: In-situ remediation2666-765710.1016/j.envadv.2021.100141https://doaj.org/article/ba07c0f4df1a4fc79e82b48ad157e7ad2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666765721001125https://doaj.org/toc/2666-7657The effect of biochar, derived from Phyllostachys pubescens (PP), on the bioavailability and release fluxes of Cd, Cu, and Zn in disturbed sediments was investigated. The content of Cd, Cu, and Zn in overlying water and pore water sharply increased after sediment disturbance. When biochar dose exceeded 2.96 kg/m2, the maximum amount of Cd, Cu, and Zn in the overlying water was significantly decreased, and a 5 cm biochar layer was formed. Release fluxes of Cd2+, Cu2+, and Zn2+ at the new sediment-water interface were negative diffusion fluxes, which reached maximum values of −0.61, −8.31 and −93.57 μg∙(m2d)−1, respectively. The bioavailability of Cd, Cu, and Zn, measured by diffusive gradients in thin film (DGT) probes, reached 0.92, 5.28 and 34.71 μg∙L−1 in sediment when the biochar dose was 14.78 kg∙m−2, which led to a reduction in [Cd]-DGT, [Cu]-DGT, and [Zn]-DGT by 46.51%, 71.54%, and 61.38%, respectively, compared with blank. Bacterial community analysis showed that low dose treatment(2.96–5.91 kg∙m−2) increased the Chao1 and Shannon of bacterial communities, while high dose treatment (8.87–14.78 kg∙m−2) showed negative effect. Overall, the PP biochar can be used to immobilize heavy metals in disturbed sediments as an economically and feasible method in field.Chao ZhangFujie zhaiBaoqing ShanElsevierarticleBiocharSediment remediationMetals bioavailabilityDiffusion fluxBacterial communitiesEnvironmental sciencesGE1-350ENEnvironmental Advances, Vol 6, Iss , Pp 100141- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biochar Sediment remediation Metals bioavailability Diffusion flux Bacterial communities Environmental sciences GE1-350
spellingShingle	Biochar Sediment remediation Metals bioavailability Diffusion flux Bacterial communities Environmental sciences GE1-350 Chao Zhang Fujie zhai Baoqing Shan Effectively reducing the bioavailability of heavy metals in disturbed sediment with biochar: In-situ remediation
description	The effect of biochar, derived from Phyllostachys pubescens (PP), on the bioavailability and release fluxes of Cd, Cu, and Zn in disturbed sediments was investigated. The content of Cd, Cu, and Zn in overlying water and pore water sharply increased after sediment disturbance. When biochar dose exceeded 2.96 kg/m2, the maximum amount of Cd, Cu, and Zn in the overlying water was significantly decreased, and a 5 cm biochar layer was formed. Release fluxes of Cd2+, Cu2+, and Zn2+ at the new sediment-water interface were negative diffusion fluxes, which reached maximum values of −0.61, −8.31 and −93.57 μg∙(m2d)−1, respectively. The bioavailability of Cd, Cu, and Zn, measured by diffusive gradients in thin film (DGT) probes, reached 0.92, 5.28 and 34.71 μg∙L−1 in sediment when the biochar dose was 14.78 kg∙m−2, which led to a reduction in [Cd]-DGT, [Cu]-DGT, and [Zn]-DGT by 46.51%, 71.54%, and 61.38%, respectively, compared with blank. Bacterial community analysis showed that low dose treatment(2.96–5.91 kg∙m−2) increased the Chao1 and Shannon of bacterial communities, while high dose treatment (8.87–14.78 kg∙m−2) showed negative effect. Overall, the PP biochar can be used to immobilize heavy metals in disturbed sediments as an economically and feasible method in field.
format	article
author	Chao Zhang Fujie zhai Baoqing Shan
author_facet	Chao Zhang Fujie zhai Baoqing Shan
author_sort	Chao Zhang
title	Effectively reducing the bioavailability of heavy metals in disturbed sediment with biochar: In-situ remediation
title_short	Effectively reducing the bioavailability of heavy metals in disturbed sediment with biochar: In-situ remediation
title_full	Effectively reducing the bioavailability of heavy metals in disturbed sediment with biochar: In-situ remediation
title_fullStr	Effectively reducing the bioavailability of heavy metals in disturbed sediment with biochar: In-situ remediation
title_full_unstemmed	Effectively reducing the bioavailability of heavy metals in disturbed sediment with biochar: In-situ remediation
title_sort	effectively reducing the bioavailability of heavy metals in disturbed sediment with biochar: in-situ remediation
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/ba07c0f4df1a4fc79e82b48ad157e7ad
work_keys_str_mv	AT chaozhang effectivelyreducingthebioavailabilityofheavymetalsindisturbedsedimentwithbiocharinsituremediation AT fujiezhai effectivelyreducingthebioavailabilityofheavymetalsindisturbedsedimentwithbiocharinsituremediation AT baoqingshan effectivelyreducingthebioavailabilityofheavymetalsindisturbedsedimentwithbiocharinsituremediation
_version_	1718400672128303104

Effectively reducing the bioavailability of heavy metals in disturbed sediment with biochar: In-situ remediation

Ejemplares similares