期刊
APPLIED SCIENCES-BASEL
卷 11, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/app11115166
关键词
hydrometallurgy; mine tailings; raw materials
类别
资金
- Ministerio de Ciencia e Innovacion (Spain) [RTI2018-096695-B-C31]
Mine tailings pose significant environmental risks by contaminating air, soil, and water with metals and soluble salts. Utilizing carbon-based materials such as activated carbon and charcoal can enhance the extraction of zinc and copper from low-grade tailings, contributing to environmental risk reduction and potential industrial application. Additional research is needed to optimize the properties of these materials for better recovery efficiency.
Mine tailing storage represents an important environmental issue. The generation and dispersal of dust from mine tailings can contaminate air and surrounding soils. In addition, metals and soluble salts present in these wastes could pollute groundwater and surface water. The recovery of metals from mine tailings can contribute to minimize the environmental risk and to achieve a circular economy model. The main objective of the present work is to study the use of two carbon-based materials, a commercial activated carbon (AC) and a commercial charcoal (VC) in the leaching of zinc and copper from low-grade tailing waste. Experimental results obtained show that it is possible to achieve the recovery of more than 87 wt% of Zn after 6 h of leaching with different sulfuric acid solutions. The addition of carbon-based materials increases the extraction of Zn at high sulfuric acid concentrations (1 M) from 89% to 99%. The addition of VC significantly increases the extraction of Cu in leaching solution with high sulfuric acid concentration (1 M), from 41 to 61%. Future research will be necessary to optimize the properties of carbon-based materials and their recovery after leaching experiments in order to assess their potential for industrial application.
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