DOI: 10.1016/j.marpolbul.2017.10.079
Scopus记录号: 2-s2.0-85040783327
论文题名: Experimental leaching of massive sulphide from TAG active hydrothermal mound and implications for seafloor mining
作者: Fallon E.K. ; Niehorster E. ; Brooker R.A. ; Scott T.B.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2018
卷: 126 起始页码: 501
结束页码: 515
语种: 英语
英文关键词: Leaching
; Metal release
; Mining impact
; SMS deposits
; Toxicity
Scopus关键词: Lead
; Minerals
; Sulfur compounds
; Toxicity
; Dissolved concentrations
; Galvanic couples
; Leachate concentrations
; Leaching experiments
; Metal release
; Mid Atlantic Ridge
; Mining impacts
; Seafloor minings
; Leaching
; copper
; iron
; lead
; mineral
; sea water
; sulfide
; leachate
; leaching
; marine pollution
; massive sulfide
; metal
; mining
; seafloor
; toxicity
; adsorption
; Article
; concentration (parameters)
; controlled study
; dilution
; dissolution
; environmental impact
; geochemistry
; hydrothermal vent
; leaching
; mass
; mineralogy
; mining
; oxidation
; particle size
; precipitation
; risk
; seafloor mining
; surface area
; volume
; Atlantic Ocean
; Mid-Atlantic Ridge
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Seafloor massive sulphide samples from the Trans-Atlantic Geotraverse active mound on the Mid-Atlantic Ridge were characterised and subjected to leaching experiments to emulate proposed mining processes. Over time, leached Fe is removed from solution by the precipitation of Fe oxy-hydroxides, whereas Cu and Pb leached remained in solution at ppb levels. Results suggest that bulk chemistry is not the main control on leachate concentrations; instead mineralogy and/or galvanic couples between minerals are the driving forces behind the type and concentration of metals that remain in solution. Dissolved concentrations exceed ANZECC toxicity guidelines by 620 times, implying the formation of localised toxicity in a stagnant water column. Moreover, concentrations will be higher when scaled to higher rock-fluid ratios and finer grain sizes proposed for mining scenarios. The distance at which dilution is achieved to meet guidelines is unlikely to be sufficient, indicating a need for the refinement of the mining process. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/88622
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: Interface Analysis Centre, School of Physics, HH Wills Physics Laboratory, University of Bristol, Tyndall Ave., United Kingdom; School of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Rd, United Kingdom
Recommended Citation:
Fallon E.K.,Niehorster E.,Brooker R.A.,et al. Experimental leaching of massive sulphide from TAG active hydrothermal mound and implications for seafloor mining[J]. Marine Pollution Bulletin,2018-01-01,126