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Cited by 53Heavy metals in environmentAdsorption and biosorption for pollutant removalCoal and Its By-products

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Stabilization of heavy metals in biochar derived from plants in antimony mining area and its environmental implications

Wang, Qian, Wang, Bing, Ma, Yuena, Zhang, Xueyang, Lyu, Wenqiang, Chen, Miao·2022·Environmental Pollution
DOI 10.1016/j.envpol.2022.118902
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Abstract

Heavy metals pollution in mining soils seriously threatens the ecological environment and human health worldwide. Phytoremediation is considered to be an ideal method to reduce the toxicity, mobility, and bioavailability of heavy metals in the soils. However, the disposal of plant-enriched heavy metals has become a thorny problem. To estimate the effect of pyrolysis on the stabilization of heavy metals in post-phytoremediation plant residues, different biochars were prepared from Conyza canadensis (CC), Gahnia tristis (GT), and Betula luminifera (BL) at different pyrolysis temperatures (300, 450, and 600 °C). Results indicated that pyrolysis was effective in the stabilization of heavy metals (Cr, Ni, As, Sb, Hg, and Pb) in plants and significantly (P 600 prepared by pyrolysis of GT at 600 °C has the best stabilization effect on Sb, which increases the residual fraction by 7.32 times, up to 82.05%. The results of environmental risk assessment show that pyrolysis of biomass at high temperature (600 °C) can effectively mitigate the environmental impact of As, Sb, and Hg. Additionally, the reutilization potential of biochar produced by post-phytoremediation plant residues as adsorbents was investigated. The results of adsorption experiments revealed that all biochars have an excellent performance to adsorb Pb(II), and the maximum adsorption capacity is 139.16 mg g -1 for CC 450 . The adsorption mechanism could be attributed to complexation, electrostatic attraction, and cation ex…

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  • Metal and metalloid concentrations in the feedstock biomasses used in Wang et al.'s experiment were very low, and results from biochar produced from plant biomass with higher contaminant concentrations might be different.

    “However, metal and metalloid concentrations in the feedstock biomasses used in that experiment were very low, and results from biochar produced from plant biomass with higher contaminant concentrations might be different.”

    From Sustainable management of post-phytoremediation biomass (2025) · cites this paper as Wang et al. 2022b

  • Eco-toxicity of metals in biochar obtained from different plant species grown in a Sb mine soil was evaluated, with toxic elements found mostly in non-bioavailable forms.

    “The eco-toxicity of metals present in biochar obtained from different plant species grown in a Sb mine soil was recently evaluated, with toxic elements being found mostly in non-bioavailable forms (Wang et al. 2022b).”

    From Sustainable management of post-phytoremediation biomass (2025) · cites this paper as Wang et al. 2022b

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Metadata

Authors
Wang, Q., Wang, B., Ma, Y., Zhang, X., Lyu, W., & Chen, M.
Affiliations
  • Guizhou Education University (CN)
  • Guizhou University (CN)
  • Xuzhou University of Technology (CN)
Corresponding author
  • Wang, Qian
  • Wang, Bing
ORCID
Venue
Environmental Pollution
Publisher
Elsevier BV
Published
2022-05
Volume
300
Pages
118902
ISSN
0269-7491 (ISSN-L)
DOI
10.1016/j.envpol.2022.118902
OpenAlex
W4210777642
Cited by
53
References
7
Citations by year
2026: 12 · 2025: 14 · 2024: 10 · 2023: 10 · 2022: 7
FWCI
2.43
Type
journal article
Language
en
Open access
closed
Licence
Locations
  • Environmental Pollution (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Coal and Its By-products
Keywords
biochar, heavy metal immobilization, pyrolysis, antimony mining, bioavailability, environmental risk assessment, heavy metal adsorption, lead adsorption, Erigeron canadensis, Betula luminifera, pyrolysis temperature, adsorption mechanism
MeSH terms
Antimony, Biodegradation, Environmental, Charcoal, Humans, Mining, Metals, Heavy

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