Carbon dioxide sequestration using NaHSO4 and NaOH: A dissolution and carbonation optimisation study.
The use of NaHSO 4 to leach out Mg fromlizardite-rich serpentinite (in form of MgSO 4 ) and the carbonation of CO 2 (captured in form of Na 2 CO 3 using NaOH) to form MgCO 3 and Na 2 SO 4 was investigated. Unlike ammonium sulphate, sodium sulphate can be separated via precipitation during the recycl...
| Publicado en: | Journal of Environmental Management Vol. 189; pp. 84 - 98 |
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| Autores principales: | , , |
| Formato: | Artículo |
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Academic Press Inc.
Mar2017
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=120589352&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 120589352 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 03014797 EMJ jtl: Journal of Environmental Management issn: 03014797 maglogo: N pubinfo: dt: Mar2017 vid: 189 pid: 735 pub: Academic Press Inc. artinfo: ui: 120589352 10.1016/j.jenvman.2016.12.029 ppf: 84 ppct: 14 formats: tig: atl: Carbon dioxide sequestration using NaHSO4 and NaOH: A dissolution and carbonation optimisation study. aug: au: Sanna, Aimaro Steel, Luc Maroto-Valer, M. Mercedes affil: Centre for Innovation in Carbon Capture and Storage (CICCS), Institute of Mechanical, Process and Energy Engineering (IMPEE), School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK su: Carbon sequestration Sodium hydroxide Sodium sulfate Dissolution (Chemistry) Carbonation (Chemistry) Precipitation (Chemistry) sug: subj: Chemical (except agricultural) and allied product merchant wholesalers Alkali and chlorine manufacturing Other Chemical and Allied Products Merchant Wholesalers Other Basic Inorganic Chemical Manufacturing All other non-metallic mineral mining and quarrying All other basic inorganic chemical manufacturing Potash, Soda, and Borate Mineral Mining Carbon sequestration Sodium hydroxide Sodium sulfate Dissolution (Chemistry) Carbonation (Chemistry) Precipitation (Chemistry) keyword: CCS Clean energy CO 2 fixation Mineral carbonation Sodium salts CCS Clean energy CO 2 fixation Mineral carbonation Sodium salts ab: The use of NaHSO 4 to leach out Mg fromlizardite-rich serpentinite (in form of MgSO 4 ) and the carbonation of CO 2 (captured in form of Na 2 CO 3 using NaOH) to form MgCO 3 and Na 2 SO 4 was investigated. Unlike ammonium sulphate, sodium sulphate can be separated via precipitation during the recycling step avoiding energy intensive evaporation process required in NH 4 -based processes. To determine the effectiveness of the NaHSO 4 /NaOH process when applied to lizardite, the optimisation of the dissolution and carbonation steps were performed using a UK lizardite-rich serpentine. Temperature, solid/liquid ratio, particle size, concentration and molar ratio were evaluated. An optimal dissolution efficiency of 69.6% was achieved over 3 h at 100 °C using 1.4 M sodium bisulphate and 50 g/l serpentine with particle size 75–150 μm. An optimal carbonation efficiency of 95.4% was achieved over 30 min at 90 °C and 1:1 magnesium:sodium carbonate molar ratio using non-synthesised solution. The CO 2 sequestration capacity was 223.6 g carbon dioxide/kg serpentine (66.4% in terms of Mg bonded to hydromagnesite), which is comparable with those obtained using ammonium based processes. Therefore, lizardite-rich serpentinites represent a valuable resource for the NaHSO 4 /NaOH based pH swing mineralisation process. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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