Predispersed solvent extraction

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dc.contributor.authorRodarte, Alma Isabel Marínen
dc.contributor.committeechairSebba, Felixen
dc.contributor.committeememberMichelsen, Donald L.en
dc.contributor.committeememberBeyer, Gerhard H.en
dc.contributor.departmentChemical Engineeringen
dc.date.accessioned2014-03-14T21:47:36Zen
dc.date.adate2010-10-13en
dc.date.available2014-03-14T21:47:36Zen
dc.date.issued1988-05-15en
dc.date.rdate2010-10-13en
dc.date.sdate2010-10-13en
dc.description.abstractA new solvent extraction method has been developed for the extraction of metal and organic ions from very dilute aqueous solutions. The new method, which has been named Predispersed Solvent Extraction (POSE), is based on the principle that 1 there is no need to comminute both phases. All that is necessary is to comminute the solvent phase prior to contacting it with the feed. This is done by converting the solvent into aphrons, which are micron-sized globules encapsulated in a soapy film. Since the aphrons are so small, it takes a long time for the solvent to rise to the surface under the influence of gravity alone. Therefore, the separation is expedited by piggy-back flotation of the aphrons on specially prepared gas bubbles, which are somewhat larger than aphrons and are called colloidal gas aphrons (CGA). Copper, uranium and chromium ions, and alizarin yellow were extracted from very dilute aqueous solutions using PDSE. Tests were performed in a vertical glass column in both batch and continuous modes, and in a continuous horizontal trough. The new solvent extraction procedure worked very efficiently and very quickly under laboratory conditions. Higher than 99% extraction was achieved in many of the tests performed.en
dc.description.degreeMaster of Scienceen
dc.format.extentix, 109 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-10132010-020210en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10132010-020210/en
dc.identifier.urihttp://hdl.handle.net/10919/45173en
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1988.R636.pdfen
dc.relation.isformatofOCLC# 18959327en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1988.R636en
dc.subject.lcshHydrometallurgyen
dc.subject.lcshSolvent extractionen
dc.titlePredispersed solvent extractionen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineChemical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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