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Oxidative Dissolution of Sulfide Minerals Tends to Accumulate More Dissolved Heavy Metals in Deep Seawater Environments than in Shallow Seawater Environments

文献类型：期刊论文

作者Hu, Siyi1,4; Tao, Chunhui2,4; Liao, Shili4; Guan, Yao1; Yin, Xuebo5; Zhu, Chuanwei3; Liang, Jin4; Guo, Zhikui4
刊名ENVIRONMENTAL SCIENCE & TECHNOLOGY
出版日期2023-12-05
卷号57期号:50页码:21438-21447
ISSN号0013-936X
关键词seafloor massive sulfide oxidative dissolution heavy metals leaching experiment deep-sea mining galvanic interaction
DOI10.1021/acs.est.3c07507
通讯作者Tao, Chunhui(taochunhui@sio.org.cn)
英文摘要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.
WOS关键词FLOOR MASSIVE SULFIDES ; X-RAY PHOTOELECTRON ; HYDROTHERMAL FIELD ; TRACE-METALS ; FERRIC ION ; SEA ; ZN ; CHALCOPYRITE ; DRAINAGE ; DEPOSITS
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
语种英语
出版者AMER CHEMICAL SOC
WOS记录号WOS:001142946400001
源URL[http://ir.qdio.ac.cn/handle/337002/184287]  
专题海洋研究所_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 4, Guangxi Key Lab Beibu Gulf Marine Resources Enviro, Beihai 536000, Peoples R China
2.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai 200030, Peoples R China
3.Chinese Acad Sci, State Key Lab Ore Deposit Geochem, Inst Geochem, Guiyang 550081, Peoples R China
4.Minist Nat Resources, Inst Oceanog 2, Key Lab Submarine Geosci, Hangzhou 310012, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, 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.

入库方式： OAI收割

来源：海洋研究所

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