Effect of Biochar Application Depth on a Former Mine Technosol: Impact on Metal(Loid)s and <i>Alnus</i> Growth

The contamination of soil by potentially toxic elements (PTEs) is a problem resulting from various anthropic activities including the exploitation of mines, which determines an accumulation of metal(loid)s in the surrounding area. It is therefore necessary to use remediation techniques to prevent th...

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Autores principales:	Gloria Palmeggiani, Manhattan Lebrun, Melissa Simiele, Sylvain Bourgerie, Domenico Morabito
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	alder phytoremediation soil restoration arsenic Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/f04ee09557cd48c5a1dab03da8531957
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spelling	oai:doaj.org-article:f04ee09557cd48c5a1dab03da85319572021-11-25T17:31:05ZEffect of Biochar Application Depth on a Former Mine Technosol: Impact on Metal(Loid)s and <i>Alnus</i> Growth10.3390/environments81101202076-3298https://doaj.org/article/f04ee09557cd48c5a1dab03da85319572021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3298/8/11/120https://doaj.org/toc/2076-3298The contamination of soil by potentially toxic elements (PTEs) is a problem resulting from various anthropic activities including the exploitation of mines, which determines an accumulation of metal(loid)s in the surrounding area. It is therefore necessary to use remediation techniques to prevent the potential damage to human health and the ecosystem. One of these techniques is phytoremediation, which involves the revegetation of contaminated areas in such a way as to reduce the spread of contaminants and entry into the groundwater by stabilizing the metal(loid)s in the soil, decreasing their mobility. To increase the ability of plants to grow under the extreme conditions of contaminated soils, it is necessary to use amendments, which can also intervene directly in reducing the mobility of contaminants. In this study, an open-field mesocosm was set up using a former mining technosol contaminated mainly by As. A biochar produced from hardwood was added at two different depths to evaluate the effectiveness of these application modalities for an overall observation duration of 17 months. Iron sulphate was also applied in both non-biochar and biochar amended conditions. In addition, trees of <i>Alnus</i> sp. were planted to examine the effectiveness of these plants for their use in soil remediation and the effect of the treatments used. The results showed an increase in soil pH induced by the biochar, which decreased over time. During the period examined, the application of biochar in the deepest layer was able to retain As more effectively. The <i>Alnus</i> sp. showed similar growth rates among the various treatments, resulting from its tolerance towards arsenic.Gloria PalmeggianiManhattan LebrunMelissa SimieleSylvain BourgerieDomenico MorabitoMDPI AGarticlealderphytoremediationsoil restorationarsenicEnvironmental technology. Sanitary engineeringTD1-1066ENEnvironments, Vol 8, Iss 120, p 120 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	alder phytoremediation soil restoration arsenic Environmental technology. Sanitary engineering TD1-1066
spellingShingle	alder phytoremediation soil restoration arsenic Environmental technology. Sanitary engineering TD1-1066 Gloria Palmeggiani Manhattan Lebrun Melissa Simiele Sylvain Bourgerie Domenico Morabito Effect of Biochar Application Depth on a Former Mine Technosol: Impact on Metal(Loid)s and <i>Alnus</i> Growth
description	The contamination of soil by potentially toxic elements (PTEs) is a problem resulting from various anthropic activities including the exploitation of mines, which determines an accumulation of metal(loid)s in the surrounding area. It is therefore necessary to use remediation techniques to prevent the potential damage to human health and the ecosystem. One of these techniques is phytoremediation, which involves the revegetation of contaminated areas in such a way as to reduce the spread of contaminants and entry into the groundwater by stabilizing the metal(loid)s in the soil, decreasing their mobility. To increase the ability of plants to grow under the extreme conditions of contaminated soils, it is necessary to use amendments, which can also intervene directly in reducing the mobility of contaminants. In this study, an open-field mesocosm was set up using a former mining technosol contaminated mainly by As. A biochar produced from hardwood was added at two different depths to evaluate the effectiveness of these application modalities for an overall observation duration of 17 months. Iron sulphate was also applied in both non-biochar and biochar amended conditions. In addition, trees of <i>Alnus</i> sp. were planted to examine the effectiveness of these plants for their use in soil remediation and the effect of the treatments used. The results showed an increase in soil pH induced by the biochar, which decreased over time. During the period examined, the application of biochar in the deepest layer was able to retain As more effectively. The <i>Alnus</i> sp. showed similar growth rates among the various treatments, resulting from its tolerance towards arsenic.
format	article
author	Gloria Palmeggiani Manhattan Lebrun Melissa Simiele Sylvain Bourgerie Domenico Morabito
author_facet	Gloria Palmeggiani Manhattan Lebrun Melissa Simiele Sylvain Bourgerie Domenico Morabito
author_sort	Gloria Palmeggiani
title	Effect of Biochar Application Depth on a Former Mine Technosol: Impact on Metal(Loid)s and <i>Alnus</i> Growth
title_short	Effect of Biochar Application Depth on a Former Mine Technosol: Impact on Metal(Loid)s and <i>Alnus</i> Growth
title_full	Effect of Biochar Application Depth on a Former Mine Technosol: Impact on Metal(Loid)s and <i>Alnus</i> Growth
title_fullStr	Effect of Biochar Application Depth on a Former Mine Technosol: Impact on Metal(Loid)s and <i>Alnus</i> Growth
title_full_unstemmed	Effect of Biochar Application Depth on a Former Mine Technosol: Impact on Metal(Loid)s and <i>Alnus</i> Growth
title_sort	effect of biochar application depth on a former mine technosol: impact on metal(loid)s and <i>alnus</i> growth
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f04ee09557cd48c5a1dab03da8531957
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Effect of Biochar Application Depth on a Former Mine Technosol: Impact on Metal(Loid)s and <i>Alnus</i> Growth

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