Biochar remediation of soil: linking biochar production with function in heavy metal contaminated soils

A. Taraqqi-A-Kamal, Christopher J. Atkinson, Aimal Khan, Kaikai Zhang, Peng Sun, Sharmin Akther and Yanrong Zhang
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A. Taraqqi-A-Kamal: Schoolof Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
Christopher J. Atkinson: Natural Resources Institute, University of Greenwich, Medway Campus, Kent, UK
Aimal Khan: Schoolof Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
Kaikai Zhang: Schoolof Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
Peng Sun: Schoolof Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
Sharmin Akther: Schoolof Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
Yanrong Zhang: Environmental Science Research Institute, Huazhong University of Science and Technology,

Plant, Soil and Environment, 2021, vol. 67, issue 4, 183-201

Abstract: The focus of this study is on the soil physicochemical, biological, and microbiological processes altered by biochar application to heavy metal (HM) contaminated soils. The aim is to highlight agronomical and environmental issues by which the restorative capacity of biochar might be developed. Literature shows biochar can induce soil remediation, however, it is unclear how soil processes are linked mechanistically to biochar production and if these processes can be manipulated to enhance soil remediation. The literature often fails to contribute to an improved understanding of the mechanisms by which biochar alters soil function. It is clear that factors such as biochar feedstock, pyrolysis conditions, application rate, and soil type are determinants in biochar soil functionality. These factors are developed to enhance our insight into production routes and the benefits of biochar in HM soil remediation. Despite a large number of studies of biochar in soils, there is little understanding of long-term effects, this is particularly true with respect to the use and need for reapplication in soil remediation.

Keywords: adsorption; toxic element; soil contamination; soil amelioration; soil pollutants; biochar function (search for similar items in EconPapers)
Date: 2021
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:67:y:2021:i:4:id:544-2020-pse

DOI: 10.17221/544/2020-PSE

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