Search for dissertations about: "bioleaching"
Showing result 1 - 5 of 8 swedish dissertations containing the word bioleaching.
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1. Chalcopyrite Dissolution in Sulphate-Based Leaching and Bioleaching Systems
Abstract : Chalcopyrite (CuFeS2) is the most abundant and the most economically important copper mineral. Increasing worldwide demand for copper accompanied by exhaustion of copper resources necessitate the development of new processes for treating lower-grade copper ores. READ MORE
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2. Comparative study on different industrial oxidic by-products as neutralising agent in bioleaching
Abstract : A comparative study on bioleaching of a pyrite concentrate using ten different industrial oxidic by-products as neutralising agent has been performed with a commercial grade slaked lime chemical serving as reference material. The acid produced during oxidation of pyrite was neutralised by regular additions of neutralising agent whenever needed to maintain a pH of 1. READ MORE
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3. Possibilities to use industrial oxidic by-products as neutralising agent in bioleaching and the effect of chloride on biooxidation
Abstract : The cost for neutralisation is the second largest cost in a bioleaching operation for which, possibilities to replace generally used lime/limestone was tested. Industrial oxidic by-products generated form Swedish industries were investigated for neutralising capacities by chemical leaching with sulphuric acid at pH 1. READ MORE
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4. Physiology and Genetics of Acidithiobacillus species : Applications for Biomining
Abstract : Bacteria from the genus Acidithiobacillus are often associated with biominingand acid mine drainage. Biomining utilises acidophilic, sulphur and ironoxidising microorganisms for recovery of metals from sulphidic low grade oresand concentrates. READ MORE
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5. Chalcopyrite (Bio)leaching in Sulphate Solutions : An Investigation into Hindered Dissolution with a Focus on Solution Redox Potential
Abstract : Chalcopyrite (CuFeS2) is the most abundant and the most economically important copper mineral. Increasing worldwide demand for copper accompanied by exhaustion of copper resources necessitate the development of new processes for treating lower-grade copper ores. READ MORE