An investigation on a photochemical remediation of polychlorinated biphenyls in transformer oil

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dc.contributor.advisorAchari, Gopal
dc.contributor.advisorLangford, Cooper H.
dc.contributor.authorKong, Jiansong
dc.date.accessioned2017-12-18T22:31:59Z
dc.date.available2017-12-18T22:31:59Z
dc.date.issued2012
dc.descriptionBibliography: p. 103-111en
dc.descriptionIncludes copy of copyright permissions. Original copies with original Partial Copyright Licence.en
dc.description.abstractThe focus of this research is to develop photo based remediation methods for polychlorinated biphenyls (PCBs) in transformer oil (TO), and to investigate the extraction of PCBs from TO. If the PCBs are successfully extracted, the cleaned oil can be recycled and PCBs in the extractant can be photochemically degraded. The study on direct dechlorination of PCB138 in TO using 254nm ultraviolet (UV) light, indicated >99% dechlorination within 1 h. Photosensitized dechlorination of PCB 13 8 in TO using visible light in the presence of methylene blue (photosensitizer) and triethylamine (sacrificial electron donor), indicated 94% reduction within 30 min. The second part of this thesis deals with liquid-liquid extraction, used to separate PCBs from TO. Three extraction solvents were used: dimethyl sulfoxide (DMSO), sulfolane and acetonitrile. The results show that DMSO was the preferred solvent for extraction of PCBs from TO. After extraction, PCBs in DMSO could be complete dechlorinated within 3 min using visible light in presence of methylene blue (MB) as a photosensitizer, sodium borohydride as a reducing agent and under dearation condition. After dechlorination process, the cleaned DMSO can be recycled or reused.
dc.format.extentxiii, 111 leaves : ill. ; 30 cm.en
dc.identifier.citationKong, J. (2012). An investigation on a photochemical remediation of polychlorinated biphenyls in transformer oil (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/4782en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/4782
dc.identifier.urihttp://hdl.handle.net/1880/105783
dc.language.isoeng
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.titleAn investigation on a photochemical remediation of polychlorinated biphenyls in transformer oil
dc.typemaster thesis
thesis.degree.disciplineCivil Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
ucalgary.thesis.accessionTheses Collection 58.002:Box 2089 627942961
ucalgary.thesis.notesUARCen
ucalgary.thesis.uarcreleaseyen
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