Alkaline Chemical Neutralization to Treat Acid Mine Drainage with High Concentrations of Iron and Manganese

被引:2
|
作者
Zhao, Pingping [1 ,2 ]
Zhang, Ruiming [1 ,2 ]
Hu, Mengdi [1 ,2 ]
机构
[1] Fujian Prov Coll & Univ Engn Res Ctr Solid Waste R, Longyan 364012, Peoples R China
[2] Longyan Univ, Coll Chem & Mat, Longyan 364012, Peoples R China
关键词
acid mining drainage (AMD); heavy metals; neutralization; precipitation; NaOH; shell powder; RESOURCE RECOVERY; REMOVAL; REMEDIATION; HYDROXIDE; ELEMENTS; OPTIONS; WATER; AMD; MN; FE;
D O I
10.3390/w16060821
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Due to its high acidity and toxic metal content, acid mine drainage (AMD) needs to be properly treated before being discharged into the environment. This study took the AMD collected from one specific mine in China as a sample and investigated the treatment methodology for AMD. The water quality of the AMD was measured, and the sample was treated with caustic soda (NaOH) and shell powder (one kind of conventional neutralizer, mainly composed of CaCO3) by the neutralization method. The results show that the AMD has a relatively low pH (2.16) and contains high concentrations of Fe (77.54 g/L), Mn (621.29 mg/L), Cu (6.54 mg/L), Ca (12.39 mg/L), and Mg (55.04 mg/L). NaOH was an effective neutralizer to treat the AMD and performed much better than shell powder. Various metals were precipitated, in the order of Fe(III), Cu, Fe(II), Mn, Ca, and Mg. The metal removal mechanisms included precipitation, adsorption, and co-precipitation. The optimal reaction conditions were the reaction duration was selected as 5 min and the mass ratio of NaOH to AMD was 0.16:1 (w:v). By this stage, the pH rapidly increased from 2.16 to 8.53 during AMD-NaOH interactions and various metals were efficiently removed (from 86.71% to 99.99%) by NaOH. The residual mass concentrations of Fe, Mn, Cu, Ca, and Mg after the treatment were 1.52, 1.77, 0.10, 1.65, and 2.17 mg/L, respectively. These data revealed that NaOH was a good treatment regent for this kind of AMD, based on the discharge criteria of China (GB28661 2012). Also, the shell powder was a helpful neutralizer for pH adjustment and copper removal. This neutralization method has the advantages of convenient operation, high speed, good effect, simple equipment, and low infrastructure cost. In addition, the resulting neutralized residue is a valuable and high-quality raw material, which can be used in metal smelting and separation.
引用
收藏
页数:13
相关论文
共 50 条
  • [41] Integrating sulfidization with neutralization treatment for selective recovery of copper and zinc over iron from acid mine drainage
    Wang, Li Pang
    Ponou, Josiane
    Matsuo, Seiji
    Okaya, Katsunori
    Dodbiba, Gjergj
    Nazuka, Tatsuki
    Fujita, Toyohisa
    MINERALS ENGINEERING, 2013, 45 : 100 - 107
  • [42] Estimation of Alkali Overdosing in a Lime Neutralization Process for Acid Mine Drainage
    Cheong, Young-Wook
    Cho, Dong-Wan
    Lee, Jin-Soo
    Hur, Won
    APPLIED CHEMISTRY FOR ENGINEERING, 2022, 33 (01): : 109 - 112
  • [43] Mineralogical constraints on the determination of neutralization potential and prediction of acid mine drainage
    Paktunc, AD
    ENVIRONMENTAL GEOLOGY, 1999, 39 (02): : 103 - 112
  • [44] Comparative study of acid mine drainage using different neutralization methods
    Huang, Zhong-sheng
    Yang, Tian-zu
    WATER PRACTICE AND TECHNOLOGY, 2021, 16 (03): : 1026 - 1035
  • [45] The chemistry of conventional and alternative treatment systems for the neutralization of acid mine drainage
    Kalin, Margarete
    Fyson, Andrew
    Wheeler, William N.
    SCIENCE OF THE TOTAL ENVIRONMENT, 2006, 366 (2-3) : 395 - 408
  • [46] THE OXIDATION OF MANGANESE BY CHLOROPHYTA FOR THE TREATMENT OF ACID-MINE DRAINAGE
    DUGGAN, LA
    WILDEMAN, TR
    UPDEGRAFF, DM
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1992, 203 : 122 - ENVR
  • [47] Uranium recovery and manganese removal from acid mine drainage
    Ladeira, A. C. Q.
    Goncalves, C. R.
    WATER POLLUTION IX, 2008, 111 : 465 - 474
  • [48] Investigation on the Efficiency and Mechanism of Iron and Manganese Removal from Acid Mine Drainage Using Serpentine-Loaded Manganese Oxide
    Zhang, Liping
    Wang, Weiwei
    Guo, Xiangshuai
    Wang, Lifang
    Chen, Jiale
    Cui, Xingjian
    Li, Huitong
    WATER AIR AND SOIL POLLUTION, 2024, 235 (11):
  • [49] Iron Removal by a Passive System Treating Alkaline Coal Mine Drainage
    Robert S. Hedin
    Mine Water and the Environment, 2008, 27 : 200 - 209
  • [50] Iron Removal by a Passive System Treating Alkaline Coal Mine Drainage
    Hedin, Robert S.
    MINE WATER AND THE ENVIRONMENT, 2008, 27 (04) : 200 - 209