Insights into Heavy Metals Leakage in Chelator-Induced Phytoextraction of Pb- and Tl-Contaminated Soil

Insights into Heavy Metals Leakage in Chelator-Induced Phytoextraction of Pb- and Tl-Contaminated Soil

Chelators including DTPA (diethylene triamine pentaacetic acid) and oxalic acid were selected for inducing phytoextraction of heavy metals (HMs) from Pb-, Tl-, and Pb-Tl- contaminated soil, in which heavy metals leakage was highly remarkable. Results showed that compared with the control group witho...

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Main Authors: Xuexia Huang, Dinggui Luo, Xiangxin Chen, Lezhang Wei, Yu Liu, Qihang Wu, Tangfu Xiao, Xiaotao Mai, Guowei Liu, Lirong Liu
Format: Article
Language:English
Published: MDPI AG 2019-04-01
Series:International Journal of Environmental Research and Public Health
Subjects:
phytoextraction
thallium
lead
maize
DTPA
oxalic acid
leaching
Online Access:https://www.mdpi.com/1660-4601/16/8/1328
id doaj-b8669d6a72cd40afadde2ab96769d044
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spelling doaj-b8669d6a72cd40afadde2ab96769d0442020-11-24T21:20:56ZengMDPI AGInternational Journal of Environmental Research and Public Health1660-46012019-04-01168132810.3390/ijerph16081328ijerph16081328Insights into Heavy Metals Leakage in Chelator-Induced Phytoextraction of Pb- and Tl-Contaminated SoilXuexia Huang0Dinggui Luo1Xiangxin Chen2Lezhang Wei3Yu Liu4Qihang Wu5Tangfu Xiao6Xiaotao Mai7Guowei Liu8Lirong Liu9School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, ChinaSchool of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, ChinaSchool of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, ChinaSchool of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, ChinaSchool of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, ChinaGuangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Guangzhou University, Guangzhou 510006, ChinaSchool of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, ChinaSchool of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, ChinaSchool of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, ChinaSchool of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, ChinaChelators including DTPA (diethylene triamine pentaacetic acid) and oxalic acid were selected for inducing phytoextraction of heavy metals (HMs) from Pb-, Tl-, and Pb-Tl- contaminated soil, in which heavy metals leakage was highly remarkable. Results showed that compared with the control group without chelating agent under planting conditions, the extraction efficiency (i.e., uptake coefficient) of Pb, Tl increased by 86%, 43% from Pb-Tl- contaminated soil in the presence of oxalic acid, and there was no significant change in heavy metal leakage under rainfall conditions. It was the best phytoremediation scheme in this work. Under rainfall conditions, the HMs concentration in the leachate showed a linear decreasing trend. Acid rain promoted the leakage of heavy metals, and the average leached amount of Tl increased by 1.47 times under acid rain conditions. However, for Pb, DTPA was the main influencing factor, followed by acid rain.https://www.mdpi.com/1660-4601/16/8/1328phytoextractionthalliumleadmaizeDTPAoxalic acidleaching
collection DOAJ
language English
format Article
sources DOAJ
author Xuexia Huang
Dinggui Luo
Xiangxin Chen
Lezhang Wei
Yu Liu
Qihang Wu
Tangfu Xiao
Xiaotao Mai
Guowei Liu
Lirong Liu
spellingShingle Xuexia Huang
Dinggui Luo
Xiangxin Chen
Lezhang Wei
Yu Liu
Qihang Wu
Tangfu Xiao
Xiaotao Mai
Guowei Liu
Lirong Liu
Insights into Heavy Metals Leakage in Chelator-Induced Phytoextraction of Pb- and Tl-Contaminated Soil
International Journal of Environmental Research and Public Health
phytoextraction
thallium
lead
maize
DTPA
oxalic acid
leaching
author_facet Xuexia Huang
Dinggui Luo
Xiangxin Chen
Lezhang Wei
Yu Liu
Qihang Wu
Tangfu Xiao
Xiaotao Mai
Guowei Liu
Lirong Liu
author_sort Xuexia Huang
title Insights into Heavy Metals Leakage in Chelator-Induced Phytoextraction of Pb- and Tl-Contaminated Soil
title_short Insights into Heavy Metals Leakage in Chelator-Induced Phytoextraction of Pb- and Tl-Contaminated Soil
title_full Insights into Heavy Metals Leakage in Chelator-Induced Phytoextraction of Pb- and Tl-Contaminated Soil
title_fullStr Insights into Heavy Metals Leakage in Chelator-Induced Phytoextraction of Pb- and Tl-Contaminated Soil
title_full_unstemmed Insights into Heavy Metals Leakage in Chelator-Induced Phytoextraction of Pb- and Tl-Contaminated Soil
title_sort insights into heavy metals leakage in chelator-induced phytoextraction of pb- and tl-contaminated soil
publisher MDPI AG
series International Journal of Environmental Research and Public Health
issn 1660-4601
publishDate 2019-04-01
description Chelators including DTPA (diethylene triamine pentaacetic acid) and oxalic acid were selected for inducing phytoextraction of heavy metals (HMs) from Pb-, Tl-, and Pb-Tl- contaminated soil, in which heavy metals leakage was highly remarkable. Results showed that compared with the control group without chelating agent under planting conditions, the extraction efficiency (i.e., uptake coefficient) of Pb, Tl increased by 86%, 43% from Pb-Tl- contaminated soil in the presence of oxalic acid, and there was no significant change in heavy metal leakage under rainfall conditions. It was the best phytoremediation scheme in this work. Under rainfall conditions, the HMs concentration in the leachate showed a linear decreasing trend. Acid rain promoted the leakage of heavy metals, and the average leached amount of Tl increased by 1.47 times under acid rain conditions. However, for Pb, DTPA was the main influencing factor, followed by acid rain.
topic phytoextraction
thallium
lead
maize
DTPA
oxalic acid
leaching
url https://www.mdpi.com/1660-4601/16/8/1328
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AT lezhangwei insightsintoheavymetalsleakageinchelatorinducedphytoextractionofpbandtlcontaminatedsoil
AT yuliu insightsintoheavymetalsleakageinchelatorinducedphytoextractionofpbandtlcontaminatedsoil
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AT tangfuxiao insightsintoheavymetalsleakageinchelatorinducedphytoextractionofpbandtlcontaminatedsoil
AT xiaotaomai insightsintoheavymetalsleakageinchelatorinducedphytoextractionofpbandtlcontaminatedsoil
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AT lirongliu insightsintoheavymetalsleakageinchelatorinducedphytoextractionofpbandtlcontaminatedsoil
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