Life in heaps: a review of microbial responses to variable acidity in sulfide mineral bioleaching heaps for metal extraction
| Autor: | D.W. Shiers, D.M. Collinson, Helen R. Watling |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
inorganic chemicals
0301 basic medicine Sulfide Microorganism 030106 microbiology Heap leaching 02 engineering and technology Sulfides Wastewater Biology Microbiology Mining 020501 mining & metallurgy Ferrous 03 medical and health sciences chemistry.chemical_compound Bioleaching Molecular Biology chemistry.chemical_classification Minerals Extraction (chemistry) Sulfuric acid General Medicine Hydrogen-Ion Concentration Biota 0205 materials engineering chemistry Metals Environmental chemistry Leaching (metallurgy) |
| Zdroj: | Research in Microbiology. 167:576-586 |
| ISSN: | 0923-2508 |
| DOI: | 10.1016/j.resmic.2016.05.007 |
| Popis: | Industrial heap leaching of low grade mineral sulfide ores is catalysed by the use of acidophilic microorganisms. These microorganisms obtain energy for growth from the oxidation of reduced inorganic or organic compounds, including soluble ferrous ion, reduced inorganic sulfur compounds (RISC) and acid-stable organic compounds. By-products of these oxidative processes, such as soluble ferric ion and sulfuric acid create favourable chemical conditions for leaching. This review is focused on the behaviour of common bioleaching microorganisms, their responses to changing pH in an industrial setting, and how both changes and microbial responses can impact the micro and macro environment. |
| Databáze: | OpenAIRE |
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