Magnesium Leachability of Mg-Silicate Peridotites: The Effect on Magnesite Yield of a Mineral Carbonation Process
Abstract: The aim of this study was to increase feedstock availability for mineral carbonation. Acid dissolution and carbonic acid dissolution approaches were used to achieve higher Mg extractions from peridotites. Acid dissolution studies of raw dunite, heat-activated dunite, heat-transformed dunit...
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ftunivnewcastnsw:uon:41769 2023-05-15T15:52:23+02:00 Magnesium Leachability of Mg-Silicate Peridotites: The Effect on Magnesite Yield of a Mineral Carbonation Process Rashid, Muhammad I. Benhelal, Emad Farhang, Faezah Stockenhuber, Michael Kennedy, Eric M. The University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering 2020 http://hdl.handle.net/1959.13/1442698 eng eng MDPI AG Mineral Carbonation international Minerals Vol. 10, Issue 12, no. 1091 10.3390/min10121091 http://hdl.handle.net/1959.13/1442698 uon:41769 ISSN:2075-163X acid dissolution dunite rock olivine carbonic acid dissolution peridotites journal article 2020 ftunivnewcastnsw 2022-08-15T22:25:16Z Abstract: The aim of this study was to increase feedstock availability for mineral carbonation. Acid dissolution and carbonic acid dissolution approaches were used to achieve higher Mg extractions from peridotites. Acid dissolution studies of raw dunite, heat-activated dunite, heat-transformed dunite, and twin sister dunite have not been reported in the literature. Heat-activated dunite is more reactive as compared to heat-transformed dunite, raw dunite, and twin sister dunite. The fraction of magnesium extracted from heat-activated dunite was 57% as compared to 18% from heat-transformed dunite, 14% from raw dunite, and 11% from twin sister dunite. Similarly, silicon and iron extractions were higher for heat-activated dunite compared to that of heat-transformed dunite, raw dunite, and twin sister dunite. Materials rich in forsterite (twin sister dunite and heat-transformed dunite) showed preferential Mg release and exhibited incongruent dissolution similar to that of forsterite. Heat-activated dunite (amorphous magnesium silicate rich) on the other hand behaved differently and showed congruent dissolution. Olivine did not dissolve under carbonic acid dissolution (with concurrent grinding) and acidic conditions. Under carbonic acid dissolution with concurrent grinding conditions, olivine was partially converted into nanometer sized particles (d10 = 0.08 μm) but still provided 16% Mg extraction during 4 h of dissolution. Article in Journal/Newspaper Carbonic acid NOVA: The University of Newcastle Research Online (Australia) |
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NOVA: The University of Newcastle Research Online (Australia) |
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ftunivnewcastnsw |
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English |
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acid dissolution dunite rock olivine carbonic acid dissolution peridotites |
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acid dissolution dunite rock olivine carbonic acid dissolution peridotites Rashid, Muhammad I. Benhelal, Emad Farhang, Faezah Stockenhuber, Michael Kennedy, Eric M. Magnesium Leachability of Mg-Silicate Peridotites: The Effect on Magnesite Yield of a Mineral Carbonation Process |
topic_facet |
acid dissolution dunite rock olivine carbonic acid dissolution peridotites |
description |
Abstract: The aim of this study was to increase feedstock availability for mineral carbonation. Acid dissolution and carbonic acid dissolution approaches were used to achieve higher Mg extractions from peridotites. Acid dissolution studies of raw dunite, heat-activated dunite, heat-transformed dunite, and twin sister dunite have not been reported in the literature. Heat-activated dunite is more reactive as compared to heat-transformed dunite, raw dunite, and twin sister dunite. The fraction of magnesium extracted from heat-activated dunite was 57% as compared to 18% from heat-transformed dunite, 14% from raw dunite, and 11% from twin sister dunite. Similarly, silicon and iron extractions were higher for heat-activated dunite compared to that of heat-transformed dunite, raw dunite, and twin sister dunite. Materials rich in forsterite (twin sister dunite and heat-transformed dunite) showed preferential Mg release and exhibited incongruent dissolution similar to that of forsterite. Heat-activated dunite (amorphous magnesium silicate rich) on the other hand behaved differently and showed congruent dissolution. Olivine did not dissolve under carbonic acid dissolution (with concurrent grinding) and acidic conditions. Under carbonic acid dissolution with concurrent grinding conditions, olivine was partially converted into nanometer sized particles (d10 = 0.08 μm) but still provided 16% Mg extraction during 4 h of dissolution. |
author2 |
The University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering |
format |
Article in Journal/Newspaper |
author |
Rashid, Muhammad I. Benhelal, Emad Farhang, Faezah Stockenhuber, Michael Kennedy, Eric M. |
author_facet |
Rashid, Muhammad I. Benhelal, Emad Farhang, Faezah Stockenhuber, Michael Kennedy, Eric M. |
author_sort |
Rashid, Muhammad I. |
title |
Magnesium Leachability of Mg-Silicate Peridotites: The Effect on Magnesite Yield of a Mineral Carbonation Process |
title_short |
Magnesium Leachability of Mg-Silicate Peridotites: The Effect on Magnesite Yield of a Mineral Carbonation Process |
title_full |
Magnesium Leachability of Mg-Silicate Peridotites: The Effect on Magnesite Yield of a Mineral Carbonation Process |
title_fullStr |
Magnesium Leachability of Mg-Silicate Peridotites: The Effect on Magnesite Yield of a Mineral Carbonation Process |
title_full_unstemmed |
Magnesium Leachability of Mg-Silicate Peridotites: The Effect on Magnesite Yield of a Mineral Carbonation Process |
title_sort |
magnesium leachability of mg-silicate peridotites: the effect on magnesite yield of a mineral carbonation process |
publisher |
MDPI AG |
publishDate |
2020 |
url |
http://hdl.handle.net/1959.13/1442698 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_relation |
Mineral Carbonation international Minerals Vol. 10, Issue 12, no. 1091 10.3390/min10121091 http://hdl.handle.net/1959.13/1442698 uon:41769 ISSN:2075-163X |
_version_ |
1766387590511984640 |