IDEAS home Printed from https://ideas.repec.org/a/gam/jijerp/v17y2020i3p928-d315642.html
   My bibliography  Save this article

Effects and Mechanisms of Calcium Ion Addition on Lead Removal from Water by Eichhornia crassipes

Author

Listed:
  • Jin-mei Zhou

    (Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin 541004, China
    Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
    Key Laboratory of Karst Ecosystem and Treatment of Rocky Desertification, Ministry of Natural Resources, Guilin 541004, China)

  • Zhong-cheng Jiang

    (Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin 541004, China
    Key Laboratory of Karst Ecosystem and Treatment of Rocky Desertification, Ministry of Natural Resources, Guilin 541004, China
    Key Laboratory of Karst Dynamics, Ministry of Natural Resources, Guilin 541004, China)

  • Xiao-qun Qin

    (Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin 541004, China
    Key Laboratory of Karst Ecosystem and Treatment of Rocky Desertification, Ministry of Natural Resources, Guilin 541004, China)

  • Lian-kai Zhang

    (Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin 541004, China
    Key Laboratory of Karst Ecosystem and Treatment of Rocky Desertification, Ministry of Natural Resources, Guilin 541004, China)

  • Qi-bo Huang

    (Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin 541004, China)

  • Guang-li Xu

    (Faculty of Engineering, China University of Geosciences, Wuhan 430074, China)

Abstract

Karst water is rich in calcium ions (Ca 2+ ) and exhibits poor metal availability and low biodegradation efficiency. This study sought to analyze the effects and mechanisms of Ca 2+ on lead (Pb) removal and absorption by Eichhornia crassipes (a floating plant common in karst areas). Moreover, the morphology and functional groups of E. crassipes in water were characterized via SEM, and FTIR. The results demonstrated that the removal rate of Pb in karst water (85.31%) was higher than that in non-karst water (77.04%); however, the Pb bioconcentration amount (BCA) in E. crassipes roots in karst water (1763 mg/kg) was lower than that in non-karst water (2143 mg/kg). With increased Ca 2+ concentrations (60, 80, and 100 mg/L) in karst water, the Pb removal rate increased (85.31%, 88.87%, and 92.44%), the Pb BCA decreased (1763, 1317, and 1095 mg/kg), and the Ca BCA increased (6801, 6955, and 9368 mg/kg), which was attributed to PbCO 3 and PbSO 4 precipitation and competitive Ca and Pb absorption. High Ca 2+ concentrations increased the strength of cation exchange, alleviated the fracture degree of fibrous roots, reduced the atrophy of vascular bundles, protected the cell wall, promoted C–O combined with Pb, enhanced the strength of O‒H, SO 4 2− , C=O, and reduced the oxidization of alkynyl acetylene bonds.

Suggested Citation

  • Jin-mei Zhou & Zhong-cheng Jiang & Xiao-qun Qin & Lian-kai Zhang & Qi-bo Huang & Guang-li Xu, 2020. "Effects and Mechanisms of Calcium Ion Addition on Lead Removal from Water by Eichhornia crassipes," IJERPH, MDPI, vol. 17(3), pages 1-15, February.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:3:p:928-:d:315642
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1660-4601/17/3/928/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1660-4601/17/3/928/
    Download Restriction: no
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Jin-Mei Zhou & Zhong-Cheng Jiang & Xiao-Qun Qin & Lian-Kai Zhang & Qi-Bo Huang & Guang-Li Xu & Dionysios D. Dionysiou, 2020. "Efficiency of Pb, Zn, Cd, and Mn Removal from Karst Water by Eichhornia crassipes," IJERPH, MDPI, vol. 17(15), pages 1-15, July.
    2. Marcelo Teixeira Carneiro & Alan Ícaro Sousa Morais & André Luiz Ferreira de Carvalho Melo & Francisco José Lustosa Ferreira & Francisco Eroni Paz Santos & Bartolomeu Cruz Viana & Josy Anteveli Osajim, 2023. "Biochar Derived from Water Hyacinth Biomass Chemically Activated for Dye Removal in Aqueous Solution," Sustainability, MDPI, vol. 15(19), pages 1-24, October.
    3. Jing Xu & Xiaoxiao Li & Tianpeng Gao, 2022. "The Multifaceted Function of Water Hyacinth in Maintaining Environmental Sustainability and the Underlying Mechanisms: A Mini Review," IJERPH, MDPI, vol. 19(24), pages 1-16, December.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jijerp:v:17:y:2020:i:3:p:928-:d:315642. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.