Challenges in microbially and chelate-assisted phytoextraction of cadmium and lead – A review

被引：2

作者：

Gul, Iram ^{[1
,2
]}

Manzoor, Maria ^{[3
]}

Hashim, Nosheen ^{[4
]}

Shah, Ghulam Mujtaba ^{[2
]}

Waani, Sayyada Phziya Tariq ^{[1
]}

Shahid, Muhammad ^{[5
]}

Antoniadis, Vasileios ^{[6
]}

Rinklebe, Jörg ^{[7
,8
]}

Arshad, Muhammad ^{[1
]}

机构：

[1] Institute of Environmental Sciences and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology (NUST), Islamabad, Pakistan

[2] Department of Earth and Environmental Sciences, Hazara University, Mansehra, Pakistan

[3] Department of Environmental Sciences, University of Okara, Okara, Pakistan

[4] Department of Environmental Sciences, University of Peshawar, Peshawar, Pakistan

[5] Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari, Pakistan

[6] Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Greece

[7] University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water and Waste Management, Laboratory of Soil and Groundwater Management, Pauluskirchstraße 7, Wuppertal,42285, Germany

[8] Department of Environment, Energy and Geoinformatics, Sejong University, 98 Gunja-Dong, Guangjin-Gu, Seoul, Korea, Republic of

来源：

Environmental Pollution | 2021年 / 287卷

关键词：

Health risks - Soils - Environmental technology - Microorganisms - Soil pollution - Biochemistry - Chelation - Detoxification - Bioremediation;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Cadmium (Cd) and lead (Pb) are ubiquitously present in surface soils, due to anthropogenic activities, causing threat to ecological and human health because of their carcinogenic nature. They accumulate in large quantities in the environment and affect negatively soil microbiota, plants, animals, and humans. For the cleanup of Cd/Pb polluted soils, different plant species have been studied. Many plants have shown the potential to hyperaccumulate Cd/Pb in their above-ground tissues. These plants decrease soil pH by root exudation or by releasing H+ ions, and this, in turn, increases the bioavailability of Cd/Pb for plant uptake. Different environmental processes related to soil organic matter, microorganisms, pH, genetic modifications, and various soil-borne chelating agents affect the potential of phytoremediation technology. Review papers trying to identify a single factor influencing the phytoremediation of heavy metals are available in the literature. However, an integrated approach dealing with different factors involved in the remediation of both metals is scarcely discussed. The main focus of this review is to discuss the phytoextraction technique for Cd/Pb removal from contaminated sites along with detoxification mechanisms. Further, the challenges in the Cd/Pb phytoextraction and different options available to cope with these challenges are also discussed. The update on the relevant findings on the use of microorganisms and amendments in enhancing the Cd/Pb phytoextraction is also provided. Finally, the areas to be explored in future research for the removal of Cd/Pb by integrated strategies have been discussed. © 2021 Elsevier Ltd

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