Insight of Cadmium Solidification by Mineral-Based Soil Conditioner

被引:0
作者
Liu, Shanke [1 ]
Liu, Jianming [1 ]
Liu, Yanhong [2 ]
Yuan, Yuan [3 ]
机构
[1] Chinese Acad Sci, Key Lab Mineral Resources, Inst Geol & Geophys, Beijing 100029, Peoples R China
[2] Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
[3] Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
来源
CHEMISTRYSELECT | 2024年 / 9卷 / 12期
基金
北京市自然科学基金;
关键词
Nano-submicron mineral-based soil conditioner; Cadmium (Cd) speciation; Solidification efficiency; pH value; Mechanism of solidifying Cd; LIME HYDROTHERMAL REACTION; K-FELDSPAR; CONTAMINATED SOILS; IN-SITU; REMEDIATION; PHASE; CD; IMMOBILIZATION; AMENDMENTS; MECHANISM;
D O I
10.1002/slct.202304409
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In response to the environmental concerns posed by cadmium (Cd) contamination, the application of nano-submicron mineral-based soil conditioner (MSC) as a potential soil amendment has garnered interest due to its promising Cd mitigation properties. In this study, we aimed to investigate the solidification capacity and mechanism of Cd in MSC and examine the phase and morphology changes following solidification. Systematic experiments were conducted to assess the solidification capacity of MSC for Cd, revealing an impressive efficiency of nearly 100 % even at Cd concentrations of approximately 800 mg/L. The solidification efficiency was found to be positively correlated with the pH value, significantly declining as the environment shifted from pH>7 to pH<7. Notably, under alkaline conditions (pH>7), Cd solidification in MSC was primarily attributed to the Cd-OH complex formed on the surface of MSC and aided by cation-exchange reaction. In contrast, under acidic conditions (pH<7) and exposure to extreme Cd concentrations, Cd(OH)Cl precipitation became the dominant mechanism for solidification. Interestingly, the presence of KCdCl3, a water-soluble phase, did not significantly contribute to the overall solidification efficiency. These findings provide valuable insights into the solidification mechanism of Cd in MSC and offer potential implications for soil remediation efforts targeting Cd contamination.
引用
收藏
页数:9
相关论文
共 43 条
  • [1] A Multi-Element Mineral Conditioner: A Supplement of Essential Cations for Red Soil and Crops Growth
    Chen, Gongning
    Shi, Lin
    [J]. CLEAN-SOIL AIR WATER, 2016, 44 (12) : 1690 - 1699
  • [2] Synthesis of Cd(OH)Cl hollow nano-spiremes from a dipolar binary liquid system and their conversion to Cd(OH)2 hollow nano-spiremes
    Chen, Guorui
    Gao, Peng
    Wang, Longqiang
    Bao, Di
    Yang, Shaoqiang
    Chen, Yujin
    Wang, Ying
    Li, Guobao
    Sun, Yuzeng
    [J]. NEW JOURNAL OF CHEMISTRY, 2013, 37 (03) : 815 - 820
  • [3] Basic cadmium salts as phase-directing agent for the phase and morphology control of metal hydroxychlorides
    Cui, Hongtao
    Wang, Li
    Li, Yanhong
    Shi, Min
    [J]. MICRO & NANO LETTERS, 2017, 12 (05): : 285 - 288
  • [4] The Effects of Cadmium Toxicity
    Genchi, Giuseppe
    Sinicropi, Maria Stefania
    Lauria, Graziantonio
    Carocci, Alessia
    Catalano, Alessia
    [J]. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 2020, 17 (11)
  • [5] Significant Acidification in Major Chinese Croplands
    Guo, J. H.
    Liu, X. J.
    Zhang, Y.
    Shen, J. L.
    Han, W. X.
    Zhang, W. F.
    Christie, P.
    Goulding, K. W. T.
    Vitousek, P. M.
    Zhang, F. S.
    [J]. SCIENCE, 2010, 327 (5968) : 1008 - 1010
  • [6] Cadmium toxicity in plants: Impacts and remediation strategies
    Haider, Fasih Ullah
    Cai Liqun
    Coulter, Jeffrey A.
    Cheema, Sardar Alam
    Wu, Jun
    Zhang, Renzhi
    Ma Wenjun
    Farooq, Muhammad
    [J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, 2021, 211
  • [7] The hydrothermal alkaline alteration of potassium feldspar: A nanometer-scale investigation of the orthoclase interface
    Hellmann, Roland
    Zhai, Yuanyuan
    Robin, Eric
    Findling, Nathaniel
    Mayanna, Sathish
    Wirth, Richard
    Schreiber, Anja
    Cabie, Martiane
    Zeng, Qingdong
    Liu, Shanke
    Liu, Jianming
    [J]. CHEMICAL GEOLOGY, 2021, 569
  • [8] Phase Equilibrium of Ternary System Cd2+, K+//Cl--H2O at 298 K
    Huang, Y.
    Zeng, Y.
    Zou, F.
    [J]. ASIAN JOURNAL OF CHEMISTRY, 2013, 25 (02) : 682 - 684
  • [9] Soil contamination with cadmium, consequences and remediation using organic amendments
    Khan, Muhammad Amjad
    Khan, Sardar
    Khan, Anwarzeb
    Alam, Mehboob
    [J]. SCIENCE OF THE TOTAL ENVIRONMENT, 2017, 601 : 1591 - 1605
  • [10] Kinniburgh D. G., 2011, PHREEPLOT CREATING G