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Hydroponic Phytoremediation of Ni, Co, and Pb by Iris Sibirica L

Author

Listed:
  • Shuming Wan

    (School of Construction and Environmental Engineering, Shenzhen Polytechnic, Shenzhen 518055, China
    Heilongjiang Academy of Black Soil Conservation and Utilization, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China)

  • Jun Pang

    (College of Arts, Shandong Agriculture University, Taian 271018, China)

  • Yiwei Li

    (State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China)

  • Yanping Li

    (State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China)

  • Jia Zhu

    (School of Construction and Environmental Engineering, Shenzhen Polytechnic, Shenzhen 518055, China)

  • Jinsheng Wang

    (The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin University of Technology, Guilin 541004, China
    Shenzhen BeiYu Environmental Technology Co., Ltd., Shenzhen 518063, China)

  • Ming Chang

    (State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China)

  • Lei Wang

    (School of Construction and Environmental Engineering, Shenzhen Polytechnic, Shenzhen 518055, China
    State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China)

Abstract

Heavy metal pollution in mine wastelands is quite severe. Iris sibirica L., an emergent wetland plant, is characterized by an ability to survive under high stress of heavy metals. This study aimed to explore the phytoremediation ability of nickel (Ni), cobalt (Co), and lead (Pb) by Iris sibirica L. under hydroponic conditions. A series of tests were conducted at different metal stress conditions to evaluate the phytoextraction and tolerance of Iris sibirica L. The concentrations of Ni, Co, and Pb in plant shoots reached their highest values in 500 mg L −1 treatments, where they were 6.55%, 23.64%, and 79.24% higher than those in 300 mg L −1 , respectively. The same concentrations in roots also reached their peak in 500 mg L −1 treatments, where they were 5.52%, 33.02%, and 70.15% higher than those in 300 mg L −1 , respectively. Bioconcentration factors (BCF) for Ni, Co, and Pb revealed the phytoextraction ability of Iris sibirica L., and the translocation factors (TCF) showed that Ni may be most easily translocated in the plant, followed by Co and Pb. This study indicates that, compared with Ni and Co, Iris sibirica L. is more suitable for the phytoremediation of Pb-contaminated metal mine wastelands.

Suggested Citation

  • Shuming Wan & Jun Pang & Yiwei Li & Yanping Li & Jia Zhu & Jinsheng Wang & Ming Chang & Lei Wang, 2021. "Hydroponic Phytoremediation of Ni, Co, and Pb by Iris Sibirica L," Sustainability, MDPI, vol. 13(16), pages 1-10, August.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:16:p:9400-:d:619178
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