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Technical trends for the valorization of heavy metal containing hyperaccumulators in China
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  • Jieyi Wen,
  • Jiawen Zhou,
  • Rui Zhang,
  • Wenqiang Ren,
  • Jianbo Zhao,
  • Di Cai
Jieyi Wen
Beijing University of Chemical Technology
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Jiawen Zhou
Institute of Soil Science Chinese Academy of Sciences
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Rui Zhang
Hunan University of Science and Technology
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Wenqiang Ren
Chinese Academy of Sciences
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Jianbo Zhao
Tarim University
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Di Cai
Beijing University of Chemical Technology

Corresponding Author:[email protected]

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With high biodiversity and a large demand for environmental restoration, China has become a global hotspot for the investigation and application of hyperaccumulator plants aiming to effectively decontaminate polluted soils. After harvesting, the abnormally high content of heavy metals (HMs) in the aboveground tissues of hyperaccumulators requires proper treatment in downstream processes to boost the economic potential and avoid secondary pollution. This paper covers the significance of phytoextraction research in the remediation of HM-contaminated soil in China. The technical trends and the major scientific advances for the eco-friendly valorization of HM-enriched hyperaccumulators are comprehensively reviewed. A systematic survey of the thermochemical and biological routes to upcycle the hyperaccumulator biomass is conducted by emphasizing the transformation strategies for green and valuable products, along with the safe recovery of HM streams. In addition, challenges and perspectives on the valorization of hyperaccumulators in the future are presented.