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dc.contributor.advisorÇakicioğlu Özkan, Seher Fehimeen
dc.contributor.authorPolatoğlu, İlkeren
dc.date.accessioned2014-07-22T13:51:22Z
dc.date.available2014-07-22T13:51:22Z
dc.date.issued2005en
dc.identifier.urihttp://hdl.handle.net/11147/3358
dc.descriptionThesis (Master)--Izmir Institute of Technology, Chemical Engineering, Izmir, 2005en
dc.descriptionIncludes bibliographical references (leaves: 70-73)en
dc.descriptionText in English; Abstract: Turkish and Englishen
dc.descriptionxi, 77 leavesen
dc.description.abstractIn this study the chemical behavior of natural zeolite from Gördes Türkey and its Na2CO3 treated form was investigated in acid (hydrochloric acid, lactic acid, acetic acid) and basic (sodium hydroxide) solutions. Synthetic gastric juice (hydrochloric acid and 0.4 % pepsin at pHi.2) was also prepared in order to examine the neutralizing capacity of zeolite for high acid concentration of stomach. The change in proton and hydroxyl concentration with time was studied by putting the different amount of zeolites into the various concentrations of acid and base solutions.It was found that natural zeolite tended to increase the pH of acidic solution while decreased the pH of basic solution depending on the concentration of proton or hydroxyl ions in solution and zeolite amount. The proton or hydroxide ions entered to the zeolite could not balance the cations released from zeolite structure. Therefore not only ion exchange, but also adsorption, cation hydrolysis, dissolution of Al and Si, complex formation and precipitation can be occurred. The neutralizing capacity of modified zeolite with sodium carbonate was higher than untreated ones. In the study conducted with synthetic gastric juice, 0.5 g modified zeolite did not significantly affect the pepsin activity of the medium and increased the pH to 2.9 which was between the normal ranges of stomach acid (2.9-3.1). In all aqueous studies conducted by using natural zeolite there was no change observed at the surface charge of the zeolite. According to characterizations performed it is understood that there was no significant change and the structure was stable. For these reason zeolite can be used as solid buffer in aqueous medium.en
dc.language.isoengen
dc.publisherIzmir Institute of Technologyen
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subject.lccTN948.Z4 .P76 2005en
dc.subject.lcshZeolites--Turkey--Gördesen
dc.subject.lcshClinoptiloliteen
dc.subject.lcshIon exchangeen
dc.titleChemical behaviour of clinoptilolite rich natural zeolite in aqueous mediumen
dc.typemasterThesisen
dc.contributor.authorIDTR130608
dc.contributor.departmentIzmir Institute of Technology. Chemical Engineeringen
dc.relation.publicationcategoryTezen_US


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