Evolution of physicochemical properties and environmental risk assessment of electrolytic manganese residue before and after storage and aging
文献类型：期刊论文
| 作者 | Nie, Xiaohan2; Lang, Lei1,2; Liu, Lei2; Wang, Ping2; Li, Jiangshan2 |
| 刊名 | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
 |
| 出版日期 | 2025-06-01 |
| 卷号 | 13期号:3页码:10 |
| 关键词 | Electrolytic manganese residue Storage aging Environmental risk assessment Physicochemical properties Heavy metal speciation Resource utilization |
| ISSN号 | 2213-2929 |
| 英文摘要 | To mitigate the environmental risks associated with the storage of electrolytic manganese residue (EMR) and to facilitate its efficient, safe treatment and resource recovery, this study systematically investigates the effects of storage aging on the physical and chemical properties, as well as the distribution and evolution of heavy metal forms in EMR. Advanced analytical techniques, including X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TG-DTG), were employed to comparatively analyze the differences in chemical composition, mineral phases, microscopic morphology, and compound content between fresh electrolytic manganese residue (FEMR) and aged electrolytic manganese residue (AEMR). Parameters such as soluble salt content, chemical composition, micromorphology, and phase transformation were examined. Additionally, the improved BCR sequential extraction method and batch leaching tests were applied to assess the environmental risks posed by heavy metals and ammonia nitrogen in both fresh and aged samples. The results demonstrate that both FEMR and AEMR are predominantly composed of gypsum and quartz. During the aging process, AEMR undergoes environmental alteration, resulting in a reduction in particle size, a looser microstructure, and a decline in sulfate and ammonium salt content from 12.3 % to 4.4 %. Moreover, the proportion of acid-soluble manganese (Mn) and reduced heavy metals decreases during aging, with the total manganese content in AEMR remaining as high as 32.8 g/kg. Leaching tests revealed that the concentrations of heavy metal manganese in FEMR and AEMR, measured using sulfuric acid and nitric acid methods, were 528 mg/ kg and 618 mg/kg, respectively. There are significant differences in the mineral composition, microscopic morphology, and heavy metal speciation between FEMR and AEMR. The absence of sanitary measures during the storage and aging process of EMR can lead to severe environmental pollution. Moreover, due to the varying compositions of multi-source EMR, existing harmless treatment outcomes and resource utilization methods lack universality. Therefore, revealing the mechanisms by which storage and aging affect the physicochemical properties and heavy metal speciation of EMR can provide a theoretical reference for its harmless treatment and resource utilization. |
| 资助项目 | National Key R&D Program of China[2022YFC3901204] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001461492700001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/36248]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Liu, Lei |
| 作者单位 | 1.Yunnan Univ, Sch Architecture & Planning, Kunming 650500, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Nie, Xiaohan,Lang, Lei,Liu, Lei,et al. Evolution of physicochemical properties and environmental risk assessment of electrolytic manganese residue before and after storage and aging[J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,2025,13(3):10. |
| APA | Nie, Xiaohan,Lang, Lei,Liu, Lei,Wang, Ping,&Li, Jiangshan.(2025).Evolution of physicochemical properties and environmental risk assessment of electrolytic manganese residue before and after storage and aging.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,13(3),10. |
| MLA | Nie, Xiaohan,et al."Evolution of physicochemical properties and environmental risk assessment of electrolytic manganese residue before and after storage and aging".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 13.3(2025):10. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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