Chemical interactions and mobility of species infly ash-brine co-disposal systems

Simple item page
dc.contributor.advisorPetrik, Leslie
dc.contributor.authorFatoba, Ojo Olanrewaju
dc.contributor.otherDept. of Chemistry
dc.contributor.otherFaculty of Science
dc.date.accessioned2013-08-27T07:47:18Z
dc.date.accessioned2024-05-13T12:41:07Z
dc.date.available2011/05/13 09:21
dc.date.available2011/05/13
dc.date.available2013-08-27T07:47:18Z
dc.date.available2024-05-13T12:41:07Z
dc.date.issued2010
dc.descriptionPhilosophiae Doctor - PhD
dc.description.abstractThe primary aim of these coal fired industries for co-disposing fly ash and brine was to use the fly ash as a sustainable salt sink. It is therefore important to study the interaction chemistry of the fly ash-brine systems to fully understand the leaching and mobility of the contaminant species, and to determine the possibility of capturing the salts from the brine solution when fly ash and brine are co-disposed. In order to achieve the aims and objectives of this study, several leaching procedures such as batch reaction tests, long-term fly ash-brine interaction tests, acid neutralization capacity (ANC) tests, up-flow percolation tests and sequential extraction tests were employed. The geochemical modeling software was applied to predict the formation of secondary mineral phases controlling the release of species in the fly ash-brine systems. Several analytical techniques such as x-ray diffraction (XRD), x-ray fluorescence (XRF), scanning electron microscopy-energy dispersion spectroscopy (SEM-EDS), inductively coupled plasma-mass spectroscopy (ICP-MS) and ion chromatography (IC) were applied to characterize the fresh fly ashes, solid residues recovered from the fly ash-brine interaction tests, the brine sample used in this study and the leachate samples in order to determine the chemical and mineralogical compositions and speciation of the waste materials.
dc.description.countrySouth Africa
dc.identifier.urihttps://hdl.handle.net/10566/14784
dc.language.isoen
dc.publisherUniversity of the Western Cape
dc.rights.holderUniversity of the Western Cape
dc.subjectFly ash, anti-scalants in brine, chemical interactions, leaching of contaminant, PHREEQC geochemical modeling, Mineral solubility, Sequential extraction, contaminant mobility.
dc.titleChemical interactions and mobility of species infly ash-brine co-disposal systems
dc.typeThesis

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Fatoba_PHD_2010.pdf
Size:
4.23 MB
Format:
Adobe Portable Document Format
Download

Collections

Philosophiae Doctor - PhD (Chemistry)