Knowledge Management System Of Institute of process engineering,CAS
| Leaching characteristics and solidification strategy of heavy metals in solid waste from natural graphite purification | |
| Liu, Yuehua1,2,3; Fu, Yulong1,2,3; Zheng, Leyin4; Wang, Miao3; Wang, Zhi2,3; Yang, Song1; Liu, Junhao2,3; Gong, Xuzhong2,3,5 | |
| 2022-11-28 | |
| Source Publication | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| ISSN | 0944-1344 |
| Pages | 13 |
| Abstract | The tailings and fluorine-containing sludge were produced during the physical and chemical purification of natural crystalline graphite, containing heavy metals in different occurrence forms. To evaluate the threat of different heavy metals to the environment, this work uses the modified sequential extraction method (BCR) to study the presence of heavy metals in two solid wastes and their dissolution characteristics in different environments. The results show that the pollution risk of heavy metals in graphite tailings to the environment is ranked as Mn > Cr > Ni > Zn, and the pollution risk of Mn in fluorine-containing sludge is higher than that of Cr. This is because the Mn in the two solid wastes mainly exists in the form of weak acid extraction. The leaching number of heavy metals in the two solid wastes is directly proportional to the soaking time and soaking temperature, and inversely proportional to the pH value and the solid-to-liquid ratio. The number of heavy metals dissolved in solid waste landfills is significantly higher than that of acid rain and surface water environments. Based on the above results and the distribution of graphite solid waste, solidification agent was suggested to prevent heavy metal dissolution and reduce environmental risks. |
| Keyword | Fluorine-containing sludge Graphite tailings Heavy metal elements Dissolution characteristics Solidification strategy |
| DOI | 10.1007/s11356-022-24298-6 |
| Language | 英语 |
| WOS Keyword | INCINERATION FLY-ASH ; STABILIZATION ; WATER ; BEHAVIORS |
| Funding Project | National Key R&D Program of China[2020YFC1909601] |
| WOS Research Area | Environmental Sciences & Ecology |
| WOS Subject | Environmental Sciences |
| Funding Organization | National Key R&D Program of China |
| WOS ID | WOS:000889052600006 |
| Publisher | SPRINGER HEIDELBERG |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/55934 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Wang, Zhi; Gong, Xuzhong |
| Affiliation | 1.Taiyuan Univ Technol, State Key Lab Clean & Efficient Coal Utilizat, Taiyuan 030024, Shanxi, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Natl Engn Res Ctr Green Recycling Strateg Met Res, Inst Proc Engn, Beijing 100190, Peoples R China 4.Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Yuehua,Fu, Yulong,Zheng, Leyin,et al. Leaching characteristics and solidification strategy of heavy metals in solid waste from natural graphite purification[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2022:13. |
| APA | Liu, Yuehua.,Fu, Yulong.,Zheng, Leyin.,Wang, Miao.,Wang, Zhi.,...&Gong, Xuzhong.(2022).Leaching characteristics and solidification strategy of heavy metals in solid waste from natural graphite purification.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,13. |
| MLA | Liu, Yuehua,et al."Leaching characteristics and solidification strategy of heavy metals in solid waste from natural graphite purification".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2022):13. |
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