| Oxidative Dissolution of Sulfide Minerals Tends to Accumulate More Dissolved Heavy Metals in Deep Seawater Environments than in Shallow Seawater Environments | |
Hu, Siyi1,2 ; Tao, Chunhui1,5; Liao, Shili1; Guan, Yao2; Yin, Xuebo3; Zhu, Chuanwei4; Liang, Jin1; Guo, Zhikui1
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| 2023-12-05 | |
| 发表期刊 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
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| ISSN | 0013-936X |
| 卷号 | 57期号:50页码:21438-21447 |
| 通讯作者 | Tao, Chunhui(taochunhui@sio.org.cn) |
| 摘要 | Deep-sea mining magnifies the release of heavy metals into seawater through oxidative dissolution of seafloor massive sulfide (SMS). At present, there is little information about how the metals released into seawater might be affected by the mineral assemblages, seawater conditions, and solid percentages. Here, leaching experiments were carried out to examine the behavior of three sulfides from the Southwest Indian Ridge, under conditions that replicated deep and shallow seawater environments at three solid-liquid ratios. The results demonstrated that sphalerite dissolved rapidly, and the metals released in both experimental conditions were comparable, potentially reflecting galvanic interactions between the sulfide minerals. Large quantities of the released metals were removed from the solutions when hydrous ferric oxides formed, especially for shallow seawater conditions. A comparison of metal concentrations in the leachates with the baseline metal concentrations in natural seawater indicated that most of the released metals, when diluted with seawater, would not have widespread impacts on ecosystems. Based on the obtained unique oxidative dissolution properties of each SMS at variable solid-liquid ratios, targeted wastewater discharge treatments are proposed to minimize impacts from the dissolved metals. This study will support the development of robust guidelines for deep-sea mining activities. |
| 关键词 | seafloor massive sulfide oxidative dissolution heavy metals leaching experiment deep-sea mining galvanic interaction |
| DOI | 10.1021/acs.est.3c07507 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China[42127807] ; National Natural Science Foundation of China[JB2203] ; National Natural Science Foundation of China[SZ2201] ; Scientific Research Fund of the Second Institute of Oceanography, MNR[2021M693778] ; China Postdoctoral Science Foundation |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| WOS类目 | Engineering, Environmental ; Environmental Sciences |
| WOS记录号 | WOS:001142946400001 |
| 出版者 | AMER CHEMICAL SOC |
| WOS关键词 | FLOOR MASSIVE SULFIDES ; X-RAY PHOTOELECTRON ; HYDROTHERMAL FIELD ; TRACE-METALS ; FERRIC ION ; SEA ; ZN ; CHALCOPYRITE ; DRAINAGE ; DEPOSITS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/184288 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Tao, Chunhui |
| 作者单位 | 1.Minist Nat Resources, Inst Oceanog 2, Key Lab Submarine Geosci, Hangzhou 310012, Peoples R China 2.Minist Nat Resources, Inst Oceanog 4, Guangxi Key Lab Beibu Gulf Marine Resources Enviro, Beihai 536000, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, State Key Lab Ore Deposit Geochem, Inst Geochem, Guiyang 550081, Peoples R China 5.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Siyi,Tao, Chunhui,Liao, Shili,et al. Oxidative Dissolution of Sulfide Minerals Tends to Accumulate More Dissolved Heavy Metals in Deep Seawater Environments than in Shallow Seawater Environments[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2023,57(50):21438-21447. |
| APA | Hu, Siyi.,Tao, Chunhui.,Liao, Shili.,Guan, Yao.,Yin, Xuebo.,...&Guo, Zhikui.(2023).Oxidative Dissolution of Sulfide Minerals Tends to Accumulate More Dissolved Heavy Metals in Deep Seawater Environments than in Shallow Seawater Environments.ENVIRONMENTAL SCIENCE & TECHNOLOGY,57(50),21438-21447. |
| MLA | Hu, Siyi,et al."Oxidative Dissolution of Sulfide Minerals Tends to Accumulate More Dissolved Heavy Metals in Deep Seawater Environments than in Shallow Seawater Environments".ENVIRONMENTAL SCIENCE & TECHNOLOGY 57.50(2023):21438-21447. |
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| oxidative-dissolutio（5833KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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