An investigation of natural and modified diatomite performance for adsorption of basic Blue 41: Isotherm, kinetic, and thermodynamic studies

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dc.authorid0000-0002-6756-4973en_US
dc.authorscopusid8528106900en_US
dc.contributor.authorKul A.R.
dc.contributor.authorAldemir A.
dc.contributor.authorKoyuncu, Hülya
dc.date.accessioned2022-04-01T11:48:40Z
dc.date.available2022-04-01T11:48:40Z
dc.date.issued2021en_US
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Kimya Mühendisliği Bölümüen_US
dc.description.abstractIn the present study, natural diatomite (ND) and Mn-modified diatomite (MD) were utilized for adsorption of Basic Blue 41 (BB 41) from aqueous solution at temperatures of 298, 308, and 318 K. Based on the results of isotherm studies, the Freundlich isotherm model is better than the Langmuir and Temkin models. Isotherm constants increase as the temperature increases, indicating that the removal process is favorable at higher temperatures. Adsorption kinetics for BB 41 on diatomite best fit the pseudo-second-order model which had kinetic constants that were higher than pseudo- first-order and intra-particle diffusion models. When the initial dye concentration rises from 10 to 80 mg L−1, adsorption capacity on ND and MD increase from 6.15 to 62.43 mg g−1 and 9.06 to 75.95 mg g−1 at 318 K, respectively. Gibbs free energy (ΔG°) values for BB 41 adsorption on ND and MD were determined as −11.224 and –15.586 kJ mol−1 at 318 K, respectively. Enthalpy (ΔH°) values for this removal process were calculated as 31.746 and 48.706 kJ mol−1, with entropy (ΔS°) values determined as 133.319 and 170.728 J mol−1 K−1 for ND and MD, respectively. Activation energy (EA) values were determined as 42.7 and 58.83 kJ mol−1 for BB 41 removal onto ND and MD adsorbents, respectively. Economic analysis of the preparation of Mn-modified diatomite was carried out. The results indicate that diatomite could be a good material compared to more costly adsorbents used for dye removal.en_US
dc.identifier.doi10.5004/dwt.2021.27381en_US
dc.identifier.endpage394en_US
dc.identifier.issn19443994
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage384en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12885/1833
dc.identifier.volume229en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorKoyuncu, Hülya
dc.language.isoenen_US
dc.publisherDesalination Publicationsen_US
dc.relation.ispartofDesalination and Water Treatmenten_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAdsorptionen_US
dc.subjectBasic Blue 41en_US
dc.subjectDiatomiteen_US
dc.subjectIsothermen_US
dc.subjectKineticen_US
dc.subjectThermodynamicen_US
dc.titleAn investigation of natural and modified diatomite performance for adsorption of basic Blue 41: Isotherm, kinetic, and thermodynamic studiesen_US
dc.typeArticleen_US

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