Leaching Characteristics of Potentially Toxic Metals from Tailings at Lujiang Alum Mine, China

被引:3
|
作者
Zhu, Hongyan [1 ]
Xu, Jinbo [1 ]
Zhou, Beibei [1 ]
Ren, Jia [2 ]
Yang, Qiang [3 ]
Wang, Zhe [1 ]
Nie, Weibo [1 ]
机构
[1] Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg, Xian 710048, Peoples R China
[2] Shaanxi Min Dev Ind & Trade Corp Ltd, Xian 710054, Peoples R China
[3] Northwest Engn Corp Ltd Power China, Xian 710065, Peoples R China
基金
中国国家自然科学基金;
关键词
alum mine tailings; potentially toxic metals; soaking test; rainfall leaching; kinetic fitting; HEAVY-METALS; WATER-QUALITY; HEALTH-RISKS; SPECIATION; MOBILITY; ELEMENTS; RELEASE; TESTS; RATES; LEAD;
D O I
10.3390/ijerph192417063
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
To investigate the leaching characteristics and potential environmental effects of potentially toxic metals (PTMs) from alum mine tailings in Lujiang, Anhui Province, soaking tests and simulated rainfall leaching experiments were conducted for two types of slag. PTMs comprising Cd, Cr, Cu, Mn, and Ni were detected in the slag. Cu and Cd contents exceeded the national soil risk screening values (GB 15618-2018). pH values of the two slag soaking solutions were negatively correlated with the solid:liquid ratio. pH values of the sintered slag soaking solutions with different solid:liquid ratios finally stabilized between 4.4 and 4.59, and those of the waste slag soaking solutions finally stabilized between 2.7 and 3.4. The concentrations of Cd, Cr, Cu, Mn, and Ni leached from waste slag were higher than those from sintered slag, and the dissolved concentrations of these PTMs in sintered slag were higher under rainfall leaching conditions than soaking conditions (the difference in Cr concentration was the smallest, 5.6%). The cumulative release of Cd, Cr, Cu, Mn, and Ni increased as the leaching liquid volume increased. The kinetic characteristics of the cumulative release of the five PTMs were best fitted by a double constant equation (R-2 > 0.98 for all fits). Single factor index evaluations showed that Mn and Ni were the PTMs with high pollution degrees (P-i for Mn and Ni exceed 1) in the leaching solutions. However, considering the biotoxicity of PTMs, the water quality index evaluations showed that the water quality of the sintered slag soaking solution, the waste slag soaking solution, and the sintered slag leachate was good, poor, and undrinkable, respectively. The health risk assessment showed that the total non-carcinogenic risk (HI) values in adults for both the sintered slag leachate and waste slag soaking solution exceeded the safe level of 1, with HI values of 3.965 and 2.342, respectively. The hazard quotient (HQ) for Cd was 1.994 for the sintered slag leachate, and Cd and Cr make up 50.29% and 15.93% of the total risk, respectively. Cr makes up 28.38% of the total risk for the waste slag soaking solution. These results indicate a high non-carcinogenic risk of exposure to Cd and Cr in the leaching solution used for drinking purposes. These findings may provide a reference for the evaluation and ecological control of PTM pollution in alum mining areas.
引用
收藏
页数:17
相关论文
共 50 条
  • [21] Environmental contamination characteristics of heavy metals from abandoned lead-zinc mine tailings in China
    Han, Wei
    Zhao, Ruifeng
    Liu, Wanrong
    Wang, Yujing
    Zhang, Shuai
    Zhao, Kang
    Nie, Jinglei
    FRONTIERS IN EARTH SCIENCE, 2023, 11
  • [22] Leaching of heavy metals from abandoned mine tailings brought by precipitation and the associated environmental impact
    Wang, Ping
    Sun, Zehang
    Hu, Yuanan
    Cheng, Hefa
    SCIENCE OF THE TOTAL ENVIRONMENT, 2019, 695
  • [23] Effect of temperature on the leaching of heavy metals from nickel mine tailings in the arctic area, Norway
    Fu, Shuai
    Lu, Jinmei
    Walder, Ingar
    Wu, Daishe
    INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING, 2023, 16 (02) : 152 - 158
  • [24] INFLUENCE OF ORGANIC-ACIDS ON LEACHING OF HEAVY-METALS FROM CONTAMINATED MINE TAILINGS
    BANKS, MK
    WATERS, CY
    SCHWAB, AP
    JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-ENVIRONMENTAL SCIENCE AND ENGINEERING & TOXIC AND HAZARDOUS SUBSTANCE CONTROL, 1994, 29 (05): : 1045 - 1056
  • [25] Assessment of Potentially Toxic Metals from Mine Tailings and Waste Rocks Around Mining Areas of Oshiri-Ishiagu Region, Southeastern Nigeria
    Igwe, Ezekiel Obinna
    Ede, Christian O.
    Eyankware, Moses O.
    Nwachukwu, Chimaobi M.
    Williams, Onyekachi B.
    EARTH SYSTEMS AND ENVIRONMENT, 2022, 6 (02) : 597 - 615
  • [26] Assessment of Potentially Toxic Metals from Mine Tailings and Waste Rocks Around Mining Areas of Oshiri-Ishiagu Region, Southeastern Nigeria
    Ezekiel Obinna Igwe
    Christian O. Ede
    Moses O. Eyankware
    Chimaobi M. Nwachukwu
    Onyekachi B. Williams
    Earth Systems and Environment, 2022, 6 : 597 - 615
  • [27] Stabilization of potentially toxic elements contained in mine waste: A microbiological approach for the environmental management of mine tailings
    Valenzuela, Edgardo, I
    Garcia-Figueroa, Alexander C.
    Amabilis-Sosa, Leonel E.
    Molina-Freaner, Francisco E.
    Pat-Espadas, Aurora M.
    JOURNAL OF ENVIRONMENTAL MANAGEMENT, 2020, 270
  • [28] Pollution characteristics and assessment of sulfide tailings from the Dabaoshan Mine, China
    Shu, Xiao-Hua
    Zhang, Qian
    Lu, Gui-Ning
    Yi, Xiao-Yun
    Dang, Zhi
    INTERNATIONAL BIODETERIORATION & BIODEGRADATION, 2018, 128 : 122 - 128
  • [29] LEACHING CHARACTERISTICS OF HEAVY-METALS FROM 3 HISTORICAL PB-ZN MINE TAILINGS HEAPS IN THE UNITED-KINGDOM
    MERRINGTON, G
    ALLOWAY, BJ
    TRANSACTIONS OF THE INSTITUTION OF MINING AND METALLURGY SECTION A-MINING INDUSTRY, 1993, 102 : A75 - A82
  • [30] Heavy metals leaching in bricks made from lead and zinc mine tailings with varied chemical components
    Li, Chong
    Wen, Qingjuan
    Hong, Mingzhu
    Liang, Zhiyu
    Zhuang, Zanyong
    Yu, Yan
    CONSTRUCTION AND BUILDING MATERIALS, 2017, 134 : 443 - 451