The dissolution rates of amorphous silica and opal-CT

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dc.contributor.authorGu, Jingen
dc.contributor.committeechairRimstidt, J. Donalden
dc.contributor.committeememberHochella, Michael F. Jr.en
dc.contributor.committeememberZelazny, Lucian W.en
dc.contributor.departmentGeologyen
dc.date.accessioned2014-03-14T21:45:04Zen
dc.date.adate2009-09-05en
dc.date.available2014-03-14T21:45:04Zen
dc.date.issued1994-08-05en
dc.date.rdate2009-09-05en
dc.date.sdate2009-09-05en
dc.description.abstractDissolution rates of two different glasses (soda-lime glass and fused quartz) and a natural opal (opal-CT) in distilled and deionized water and two concentrations of NaCI solution from 25°C to 75°C were measured by molybdate blue method and determined by initial rate method. The specific surface area of the samples were determined by N2 BET procedure. XRD patterns were obtained to check the crystallinity of these samples. Dissolution experiments show that soda-lime glass dissolves the fastest and opal-CT dissolve the most slowly. The dissolution rate of each sample is about one order of magnitude higher at 75°C than that at 2S°C. The calculated Ea for soda-lime glass is 32.7 kJ/mole, for fused quartz is 37.S kJ/mole and for opal-CT is 41.7 kJ/mole.en
dc.description.degreeMaster of Scienceen
dc.format.extentvi, 53 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-09052009-041033en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09052009-041033/en
dc.identifier.urihttp://hdl.handle.net/10919/44613en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1994.G8.pdfen
dc.relation.isformatofOCLC# 31459283en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1994.G8en
dc.subject.lcshGlass -- Dissolutionen
dc.subject.lcshOpals -- Dissolutionen
dc.subject.lcshSilica, Vitreous -- Dissolutionen
dc.titleThe dissolution rates of amorphous silica and opal-CTen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineGeologyen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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