Carbon sequestration via enhanced weathering of peridotites and basalts in seawater
dc.contributor.author | Rigopoulos, I. | en |
dc.contributor.author | Harrison, A. L. | en |
dc.contributor.author | Delimitis, A. | en |
dc.contributor.author | Ioannou, I. | en |
dc.contributor.author | Efstathiou, A. M. | en |
dc.contributor.author | Kyratsi, Theodora | en |
dc.contributor.author | Oelkers, E. H. | en |
dc.creator | Rigopoulos, I. | en |
dc.creator | Harrison, A. L. | en |
dc.creator | Delimitis, A. | en |
dc.creator | Ioannou, I. | en |
dc.creator | Efstathiou, A. M. | en |
dc.creator | Kyratsi, Theodora | en |
dc.creator | Oelkers, E. H. | en |
dc.date.accessioned | 2019-05-06T12:24:27Z | |
dc.date.available | 2019-05-06T12:24:27Z | |
dc.date.issued | 2018 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/48775 | |
dc.description.abstract | Enhanced weathering of mafic and ultramafic rocks has been suggested as a carbon sequestration strategy for the mitigation of climate change. This study was designed to assess the potential drawdown of CO2 directly from the atmosphere by the enhanced weathering of peridotites and basalts in seawater. Pulverized, and ball milled dunite, harzburgite and olivine basalt were reacted in artificial seawater in batch reactor systems open to the atmosphere for two months. The results demonstrate that the ball-milled dunite and harzburgite changed dramatically the chemical composition of the seawater within a few hours, inducing CO2 drawdown directly from the atmosphere and ultimately the precipitation of aragonite. In contrast, pulverized but unmilled rocks, and the ball-milled basalt, did not yield any significant changes in seawater composition during the two-month experiments. As much as 10 wt percent aragonite was precipitated during the experiment containing the finest-grained dunite. These results demonstrate that ball milling can substantially enhance the weathering rate of peridotites in marine environments, promoting the permanent storage of CO2 as environmentally benign carbonate minerals through enhanced weathering. The precipitation of Mg-silicate clay minerals, however, could reduce the efficiency of this carbon sequestration approach over longer timescales. © 2017 Elsevier Ltd | en |
dc.language.iso | eng | en |
dc.source | Applied Geochemistry | en |
dc.subject | Carbon dioxide | en |
dc.subject | Ball milling | en |
dc.subject | Chemical compositions | en |
dc.subject | Carbon capture | en |
dc.subject | Carbon capture and storage (CCS) | en |
dc.subject | Carbon capture and storages (CCS) | en |
dc.subject | Climate change | en |
dc.subject | Mineral carbonation | en |
dc.subject | Minerals | en |
dc.subject | Silicate minerals | en |
dc.subject | Silicates | en |
dc.subject | Basalt | en |
dc.subject | Basalts | en |
dc.subject | Batch reactor systems | en |
dc.subject | Batch reactors | en |
dc.subject | Carbonate minerals | en |
dc.subject | Clay minerals | en |
dc.subject | Enhanced weathering | en |
dc.subject | Environmentally benign | en |
dc.subject | Peridotites | en |
dc.subject | Seawater | en |
dc.subject | Seawater compositions | en |
dc.subject | Silicate clay minerals | en |
dc.subject | Weathering | en |
dc.title | Carbon sequestration via enhanced weathering of peridotites and basalts in seawater | en |
dc.type | info:eu-repo/semantics/article | |
dc.identifier.doi | 10.1016/j.apgeochem.2017.11.001 | |
dc.description.volume | 91 | |
dc.description.startingpage | 197 | |
dc.description.endingpage | 207 | |
dc.author.faculty | Πολυτεχνική Σχολή / Faculty of Engineering | |
dc.author.department | Τμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering | |
dc.type.uhtype | Article | en |
dc.contributor.orcid | Kyratsi, Theodora [0000-0003-2916-1708] | |
dc.description.totalnumpages | 197-207 | |
dc.gnosis.orcid | 0000-0003-2916-1708 |
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