CO2 sequestration using brine impacted fly fish

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dc.contributor.advisorPetrik, Leslie F.
dc.contributor.authorMuriithi, Grace Nyambura
dc.contributor.otherDept. of Chemistry
dc.contributor.otherFaculty of Science
dc.date.accessioned2013-12-11T10:15:23Z
dc.date.accessioned2024-05-09T10:50:08Z
dc.date.available2011/02/17 06:59
dc.date.available2011/02/17
dc.date.available2013-12-11T10:15:23Z
dc.date.available2024-05-09T10:50:08Z
dc.date.issued2009
dc.descriptionMagister Scientiae - MScen_US
dc.description.abstractIt was hypothesized that South African FA and brine could sequester CO2 through mineral carbonation. A statistical approach was undertaken to optimize the % CaCO3 formed from FA/brine/CO2 interaction with input parameters of temperature, pressure, particle size and solid/liquid ratio (S/L) being varied. The ranges adopted for the input parameters were: temperature of 30 ºC or 90 ºC; pressure of 1 Mpa or 4 Mpa; four particle sizes namely bulk ash, > 150 μm, < 20 μm and 20 μm- 150 μm particle size range; S/L ratios of 0.1, 0.5 or 1. The FA/ brine dispersions were carbonated in a high pressure reactor varying the above mentioned input parameters. The fresh Secunda FA of various size fractions was characterized morphologically using scanning electron microscopy, chemically using X-ray fluorescence and mineralogically using qualitative X-ray diffraction. The carbonated solid residues on the other hand were characterized using quantitative X-ray diffraction, scanning electron microscopy, thermal gravimetic analysis and Chittick tests. The raw brine from Tutuka together with the carbonation leachates were characterized using inductively coupled mass spectrometry and ion chromatography. Total acid digestion was carried out to evaluate the differences in the total elemental content in both the fresh ash and the carbonated solid residues. The results suggested that South African FA from Secunda belongs to class F based on the CaO content as well as the total alumina, silica and ferric oxide content, while the RO brine from Tutuka were classified as NaSO4 waters.en_US
dc.description.countrySouth Africa
dc.identifier.urihttps://hdl.handle.net/10566/14483
dc.language.isoenen_US
dc.publisherUniversity of the Western Capeen_US
dc.rights.holderUniversity of the Western Capeen_US
dc.subjectCoalen_US
dc.subjectWaste productsen_US
dc.subjectFly ashen_US
dc.subjectUtilizationen_US
dc.subjectPolymerizationen_US
dc.subjectWaste Disposalen_US
dc.subjectHarzadous Wasteen_US
dc.titleCO2 sequestration using brine impacted fly fishen_US
dc.typeThesisen_US

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