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Adsorption of reactive dyes on calcined alunite from aqueous solutions

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dc.contributor.authors Ozacar, M; Sengil, IA;
dc.date.accessioned 2020-02-26T08:56:44Z
dc.date.available 2020-02-26T08:56:44Z
dc.date.issued 2003
dc.identifier.citation Ozacar, M; Sengil, IA; (2003). Adsorption of reactive dyes on calcined alunite from aqueous solutions. JOURNAL OF HAZARDOUS MATERIALS, 98, 224-211
dc.identifier.issn 0304-3894
dc.identifier.uri https://doi.org/10.1016/S0304-3894(02)00358-8
dc.identifier.uri https://hdl.handle.net/20.500.12619/50124
dc.description.abstract dAn attempt to alleviate the problem caused by the presence of reactive dyes in textile effluents was undertaken. Since alunite is a very abundant and inexpensive, we decided to experiment with it as a potential adsorbent for a certain type of the supracited pollutants used in cellulose fibers dyeing. The adsorption of Reactive Blue 114 (RB 114), Reactive Yellow 64 (RY64) and Reactive Red 124 (RR124) by calcined alunite was studied by varying parameters such as the calcination temperature and time, particle size, pH, agitation time and dye concentration. Acidic pH was favorable for the adsorption of RB 114 and alkaline pH was favorable to both RY64 and RR124. The equilibrium data fit the Langmuir isotherm. The adsorption capacities were found to be 170.7, 236 and 153 mg dye per gram of calcined alunite for RB114, RY64 and RR124, respectively. The pseudo first- and second-order kinetic models were used to describe the kinetic data, and the rate constants were evaluated. The experimental data were fitted by the second-order kinetic model, which indicates that chemical sorption is the rate limiting step, inside of mass transfer. (C) 2003 Elsevier Science B.V All rights reserved.
dc.language English
dc.publisher ELSEVIER SCIENCE BV
dc.subject Environmental Sciences & Ecology
dc.title Adsorption of reactive dyes on calcined alunite from aqueous solutions
dc.type Article
dc.identifier.volume 98
dc.identifier.startpage 211
dc.identifier.endpage 224
dc.contributor.department Sakarya Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü
dc.contributor.saüauthor Özacar, Mahmut
dc.contributor.saüauthor Şengil, İsmail Ayhan
dc.relation.journal JOURNAL OF HAZARDOUS MATERIALS
dc.identifier.wos WOS:000181804600016
dc.identifier.doi 10.1016/S0304-3894(02)00358-8
dc.contributor.author Özacar, Mahmut
dc.contributor.author Şengil, İsmail Ayhan


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