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An investigation into the dissolution of pyroxene : a precursor to mineral carbonation of PGM tailings in South Africa
Includes bibliographical references.
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Chemical Engineering
2014
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| _version_ | 1867613299476004864 |
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| access_status_str | Open Access |
| author | Meyer, Nicole Anne |
| author2 | Becker, Megan |
| author_browse | Becker, Megan Meyer, Nicole Anne |
| author_facet | Becker, Megan Meyer, Nicole Anne |
| author_sort | Meyer, Nicole Anne |
| collection | Thesis |
| description | Includes bibliographical references. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/9610 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:55.830Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Chemical Engineering |
| publisherStr | Department of Chemical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/9610 An investigation into the dissolution of pyroxene : a precursor to mineral carbonation of PGM tailings in South Africa Meyer, Nicole Anne Becker, Megan Broadhurst, Jennifer Lee Reid, Dave Includes bibliographical references. Carbon sequestration through mineral carbonation is becoming an increasingly attractive alternative for mitigating excess CO₂ in the atmosphere. Mineral carbonation is a natural process whereby CO₂ is fixed to CaFeMg-silicates to form Ca-, Fe-, and Mg-carbonates. This process is thermodynamically favourable and the products are benign and stable over millions of years. Pyroxene-rich tailings generated from the processing of PGM ores in South Africa have the potential to sequester significant amounts of CO₂ (~14 Mt per annum). In the indirect pH swing method, silicate minerals are initially leached at low pH and then carbonated at high pH. A previous study on these tailings highlighted the slow extraction of cations from orthopyroxene, the major Mg-host. The low reactivity of the orthopyroxene resulted in an overall low conversion of tailings to carbonates with only 30 % for Ca, 3 % for Mg and 9 % for Fe. Under similar experimental leach conditions, ~100 % dissolution of olivine and serpentine can be achieved. 2014-11-14T19:46:59Z 2014-11-14T19:46:59Z 2014 Master Thesis Masters MSc http://hdl.handle.net/11427/9610 eng application/pdf Department of Chemical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Meyer, Nicole Anne An investigation into the dissolution of pyroxene : a precursor to mineral carbonation of PGM tailings in South Africa |
| thesis_degree_str | Master's |
| title | An investigation into the dissolution of pyroxene : a precursor to mineral carbonation of PGM tailings in South Africa |
| title_full | An investigation into the dissolution of pyroxene : a precursor to mineral carbonation of PGM tailings in South Africa |
| title_fullStr | An investigation into the dissolution of pyroxene : a precursor to mineral carbonation of PGM tailings in South Africa |
| title_full_unstemmed | An investigation into the dissolution of pyroxene : a precursor to mineral carbonation of PGM tailings in South Africa |
| title_short | An investigation into the dissolution of pyroxene : a precursor to mineral carbonation of PGM tailings in South Africa |
| title_sort | investigation into the dissolution of pyroxene a precursor to mineral carbonation of pgm tailings in south africa |
| url | http://hdl.handle.net/11427/9610 |
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