Experimental studies of basalt-H2O-CO2 interaction with a high pressure column flow reactor: the mobility of metals
Here, we report on the mobility of metals at the early stage of CO2 injection into basalt, before significant precipitation of secondary minerals. Short-lived pulses (50-100 hours) of CO2-charged water were injected into a high pressure column flow reactor filled with basaltic glass grains at 22°C,...
| Main Authors: | , , |
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| Format: | Conference Paper |
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Elsevier
2013
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1876610213007480/pdf?md5=0f77c5ff85d7cec6824ae7cac596df63&pid=1-s2.0-S1876610213007480-main.pdf http://hdl.handle.net/20.500.11937/18567 |
| _version_ | 1848749782008332288 |
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| author | Galeczka, I. Wolff-Boenisch, Domenik Gislason, S. |
| author2 | Unknown |
| author_facet | Unknown Galeczka, I. Wolff-Boenisch, Domenik Gislason, S. |
| author_sort | Galeczka, I. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Here, we report on the mobility of metals at the early stage of CO2 injection into basalt, before significant precipitation of secondary minerals. Short-lived pulses (50-100 hours) of CO2-charged water were injected into a high pressure column flow reactor filled with basaltic glass grains at 22°C, 8 MPa of total pressure and a velocity of 0.4 cm/min. The residence time of the water within the column ranged from 8 to 10 hours. The column was conditioned with pure water, resulting in alkaline outflow (pH ~9). The pH of the inlet CO2-charged water was ~3.2, and the lowest pH measured in the column was 4.5, after less than 10 hours of water/rock interaction. The dissolved metal concentrations and metals relative mobility increased dramatically during the CO2-pulses; more than 100 times for Sr, Fe, Al, Ca, Ba, Mn, and Mg. Of these elements, all but Al can bind with CO2 to form carbonate minerals. Only the dissolved Al, Fe, Mn and Cr concentrations exceeded allowable drinking water limits. After the CO2-pulses, all of the elemental concentrations decreased close-to or even below what was measured during the conditioning of the column. The pH never reached ~9 which was the initial pH before CO2-pulses. |
| first_indexed | 2025-11-14T07:26:24Z |
| format | Conference Paper |
| id | curtin-20.500.11937-18567 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:26:24Z |
| publishDate | 2013 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-185672017-02-28T01:35:22Z Experimental studies of basalt-H2O-CO2 interaction with a high pressure column flow reactor: the mobility of metals Galeczka, I. Wolff-Boenisch, Domenik Gislason, S. Unknown elemental mobility high pressure column flow reactor mineral storage Here, we report on the mobility of metals at the early stage of CO2 injection into basalt, before significant precipitation of secondary minerals. Short-lived pulses (50-100 hours) of CO2-charged water were injected into a high pressure column flow reactor filled with basaltic glass grains at 22°C, 8 MPa of total pressure and a velocity of 0.4 cm/min. The residence time of the water within the column ranged from 8 to 10 hours. The column was conditioned with pure water, resulting in alkaline outflow (pH ~9). The pH of the inlet CO2-charged water was ~3.2, and the lowest pH measured in the column was 4.5, after less than 10 hours of water/rock interaction. The dissolved metal concentrations and metals relative mobility increased dramatically during the CO2-pulses; more than 100 times for Sr, Fe, Al, Ca, Ba, Mn, and Mg. Of these elements, all but Al can bind with CO2 to form carbonate minerals. Only the dissolved Al, Fe, Mn and Cr concentrations exceeded allowable drinking water limits. After the CO2-pulses, all of the elemental concentrations decreased close-to or even below what was measured during the conditioning of the column. The pH never reached ~9 which was the initial pH before CO2-pulses. 2013 Conference Paper http://hdl.handle.net/20.500.11937/18567 http://www.sciencedirect.com/science/article/pii/S1876610213007480/pdf?md5=0f77c5ff85d7cec6824ae7cac596df63&pid=1-s2.0-S1876610213007480-main.pdf Elsevier restricted |
| spellingShingle | elemental mobility high pressure column flow reactor mineral storage Galeczka, I. Wolff-Boenisch, Domenik Gislason, S. Experimental studies of basalt-H2O-CO2 interaction with a high pressure column flow reactor: the mobility of metals |
| title | Experimental studies of basalt-H2O-CO2 interaction with a high pressure column flow reactor: the mobility of metals |
| title_full | Experimental studies of basalt-H2O-CO2 interaction with a high pressure column flow reactor: the mobility of metals |
| title_fullStr | Experimental studies of basalt-H2O-CO2 interaction with a high pressure column flow reactor: the mobility of metals |
| title_full_unstemmed | Experimental studies of basalt-H2O-CO2 interaction with a high pressure column flow reactor: the mobility of metals |
| title_short | Experimental studies of basalt-H2O-CO2 interaction with a high pressure column flow reactor: the mobility of metals |
| title_sort | experimental studies of basalt-h2o-co2 interaction with a high pressure column flow reactor: the mobility of metals |
| topic | elemental mobility high pressure column flow reactor mineral storage |
| url | http://www.sciencedirect.com/science/article/pii/S1876610213007480/pdf?md5=0f77c5ff85d7cec6824ae7cac596df63&pid=1-s2.0-S1876610213007480-main.pdf http://hdl.handle.net/20.500.11937/18567 |