Phytoextraction of cadmium-contaminated soil and potential of regenerated tobacco biomass for recovery of cadmium

Abstract The aim of this study was to estimate the influence of regenerated tobacco on the extraction of Cd from two acidic soils as well as to address the problem of how to deal with contaminated leaves following phytoextraction. Results showed that a coppicing tobacco led to a decline in Cd concen...

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Autores principales:	Yang Yang, Yichen Ge, Hongyuan Zeng, Xihong Zhou, Liang Peng, Qingru Zeng
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5e5973b1263443d0b411f57eb14bd455
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spelling	oai:doaj.org-article:5e5973b1263443d0b411f57eb14bd4552021-12-02T11:52:24ZPhytoextraction of cadmium-contaminated soil and potential of regenerated tobacco biomass for recovery of cadmium10.1038/s41598-017-05834-82045-2322https://doaj.org/article/5e5973b1263443d0b411f57eb14bd4552017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05834-8https://doaj.org/toc/2045-2322Abstract The aim of this study was to estimate the influence of regenerated tobacco on the extraction of Cd from two acidic soils as well as to address the problem of how to deal with contaminated leaves following phytoextraction. Results showed that a coppicing tobacco led to a decline in Cd concentration in regenerated leaves and stalks when plants were grown in pots, but increased concentrations in regenerated lower and middle leaves when plants were grown under field conditions. The highest recorded bioconcentration factors in Chaling and Guanxi soil were 37.53 and 19.21 in lower leaves in the field, respectively. Total Cd extraction efficiency in practice (9.43% for Chaling soil and 6.24% for Guanxi soil) under field conditions confirmed our theoretical calculations (10.0% for Chaling soil and 6.73% for Guanxi soil). Use of a 0.5% hydrochloric acid(HCl) solution was sufficient to reduce Cd (98.4%) in tobacco leaves to permissible levels as required by the Hygienic Standard for Feeds in China (≤0.5 mg kg−1). Regenerated tobacco has the potential to allow cultivation of Cd contaminated farmland to produce animal feed, assist in lowering total Cd content of soil, and allow income generation for farmers.Yang YangYichen GeHongyuan ZengXihong ZhouLiang PengQingru ZengNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yang Yang Yichen Ge Hongyuan Zeng Xihong Zhou Liang Peng Qingru Zeng Phytoextraction of cadmium-contaminated soil and potential of regenerated tobacco biomass for recovery of cadmium
description	Abstract The aim of this study was to estimate the influence of regenerated tobacco on the extraction of Cd from two acidic soils as well as to address the problem of how to deal with contaminated leaves following phytoextraction. Results showed that a coppicing tobacco led to a decline in Cd concentration in regenerated leaves and stalks when plants were grown in pots, but increased concentrations in regenerated lower and middle leaves when plants were grown under field conditions. The highest recorded bioconcentration factors in Chaling and Guanxi soil were 37.53 and 19.21 in lower leaves in the field, respectively. Total Cd extraction efficiency in practice (9.43% for Chaling soil and 6.24% for Guanxi soil) under field conditions confirmed our theoretical calculations (10.0% for Chaling soil and 6.73% for Guanxi soil). Use of a 0.5% hydrochloric acid(HCl) solution was sufficient to reduce Cd (98.4%) in tobacco leaves to permissible levels as required by the Hygienic Standard for Feeds in China (≤0.5 mg kg−1). Regenerated tobacco has the potential to allow cultivation of Cd contaminated farmland to produce animal feed, assist in lowering total Cd content of soil, and allow income generation for farmers.
format	article
author	Yang Yang Yichen Ge Hongyuan Zeng Xihong Zhou Liang Peng Qingru Zeng
author_facet	Yang Yang Yichen Ge Hongyuan Zeng Xihong Zhou Liang Peng Qingru Zeng
author_sort	Yang Yang
title	Phytoextraction of cadmium-contaminated soil and potential of regenerated tobacco biomass for recovery of cadmium
title_short	Phytoextraction of cadmium-contaminated soil and potential of regenerated tobacco biomass for recovery of cadmium
title_full	Phytoextraction of cadmium-contaminated soil and potential of regenerated tobacco biomass for recovery of cadmium
title_fullStr	Phytoextraction of cadmium-contaminated soil and potential of regenerated tobacco biomass for recovery of cadmium
title_full_unstemmed	Phytoextraction of cadmium-contaminated soil and potential of regenerated tobacco biomass for recovery of cadmium
title_sort	phytoextraction of cadmium-contaminated soil and potential of regenerated tobacco biomass for recovery of cadmium
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/5e5973b1263443d0b411f57eb14bd455
work_keys_str_mv	AT yangyang phytoextractionofcadmiumcontaminatedsoilandpotentialofregeneratedtobaccobiomassforrecoveryofcadmium AT yichenge phytoextractionofcadmiumcontaminatedsoilandpotentialofregeneratedtobaccobiomassforrecoveryofcadmium AT hongyuanzeng phytoextractionofcadmiumcontaminatedsoilandpotentialofregeneratedtobaccobiomassforrecoveryofcadmium AT xihongzhou phytoextractionofcadmiumcontaminatedsoilandpotentialofregeneratedtobaccobiomassforrecoveryofcadmium AT liangpeng phytoextractionofcadmiumcontaminatedsoilandpotentialofregeneratedtobaccobiomassforrecoveryofcadmium AT qingruzeng phytoextractionofcadmiumcontaminatedsoilandpotentialofregeneratedtobaccobiomassforrecoveryofcadmium
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Phytoextraction of cadmium-contaminated soil and potential of regenerated tobacco biomass for recovery of cadmium

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