Influence of coexisting cations on chemical neutralization process of Mn-containing acid mine drainage

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Dec.2023, Vol.46 No.12: 1610-1615

DOI: 10.3969/j.issn.1003-5060.2023.12.004

Authors

YANG Cheng $ ^{1} $, YUE Zhengbo $ ^{1} $, XU Qingsheng $ ^{1} $, WANG Shaoping $ ^{2} $, WANG Guangcheng $ ^{2} $, WANG Jin $ ^{1} $

(1. School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China; 2. Nanshan Mining Co., Ltd., Anhui Masteel Mining Resources Group, Ma'anshan 243000, China)

Abstract and Keywords

Abstract: In this paper, the chemical neutralization method was used to treat simulated acid mine drainage (AMD). The effects of coexisting ions $ Fe^{2+} $, $ Mg^{2+} $ and $ Al^{3+} $ on the removal rate of manganese and its solid phase products were investigated under aeration agitation and mechanical agitation. The results show that the three coexisting ions can promote the removal of manganese to some extent. The effect of $ Al^{3+} $ is the most significant, but $ Al^{3+} $ and its products inhibit the oxidation of manganese ions. The presence of $ Al^{3+} $ and $ Fe^{2+} $ will reduce the content of manganese in the solid phase products and affect the sediment composition, which is not conducive to subsequent recovery and treatment. The results can provide reference for the optimization of chemical neutralization and removal of manganese and the recovery and utilization of solid phase products.

Keywords: acid mine drainage(AMD); manganese oxidation; X-ray diffraction(XRD) analysis; coexisting ions; average valence

作者信息

杨程 $ ^{1} $，岳正波 $ ^{1} $，许庆升 $ ^{1} $，王绍平 $ ^{2} $，王广成 $ ^{2} $，王进 $ ^{1} $

(1. 合肥工业大学资源与环境工程学院，安徽合肥 230009；2. 安徽马钢矿业资源集团南山矿业有限责任公司，安徽马鞍山 243000)

摘要和关键词

摘要: 文章采用化学中和法处理模拟酸性矿山废水（acid mine drainage，AMD），探究共存离子 $ Fe^{2+} $、 $ Mg^{2+} $ 和 $ Al^{3+} $ 在曝气搅拌和机械搅拌 2 种条件下对锰的去除率及其固相产物的影响。结果表明：3 种共存离子对锰的去除均具有一定的促进作用；其中 $ Al^{3+} $ 的作用最显著，但 $ Al^{3+} $ 及其产物对锰离子的氧化有抑制作用； $ Al^{3+} $、 $ Fe^{2+} $ 的存在会降低固相产物中锰元素的质量比并影响沉积物组成，不利于后续回收处理。研究结果可为化学中和除锰工艺优化及固相产物回收利用研究提供参考。

关键词: 酸性矿山废水（AMD）；锰氧化；X射线衍射（XRD）分析；共存离子；平均价态

Funding

国家自然科学基金区域创新发展联合基金（安徽）资助项目（U20A20325）

合肥工业大学学报(自然科学版)

Navigation