Removal of crystal violet dye from aqueous solutions using montmorillonite-based nanoclays: Kinetic and equilibrium studies

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dc.contributor.authorCavusoglu, Ferda Civan
dc.contributor.authorBayazit, Sahika Sena
dc.contributor.authorSalam, Mohamed Abdel
dc.date.accessioned2024-03-13T10:33:07Z
dc.date.available2024-03-13T10:33:07Z
dc.date.issued2023
dc.departmentİstanbul Beykent Üniversitesien_US
dc.description.abstractIn recent years, water pollution has become a major problem, especially due to the wastes discharged from different sectors without treatment. Among these, there are various paint wastes used by the textile, leather, paper and cosmetics sectors. Crystal violet (CV) is a widely known cationic dye and is often used as a colorant in industries. CV dye is known to be toxic to humans and animals at 1 ppb. For this reason, it is very important for environmental safety to treat industrial wastewater from crystal violet before discharge. This research aimed to evaluate the efficacy of two different montmorillonite-based nanoclays (B1 and B2) as a low-cost material for the removal of crystal violet dye from aqueous solutions. Structural characterizations of nanoclays were analyzed using FTIR and TGA methods. All parameters that could affect the CV adsorption process were optimized in a batch system. The effects of various factors (adsorbent dose, contact time, solution pH, co-existing ion effects, adsorption temperature, initial dye concentration) on the adsorption process were investigated. Experiments to investigate the mechanism of the CV-nanoclay adsorption system showed that the adsorption kinetics and equilibrium parameters fit better with the Pseudo second-order kinetic model and the Langmuir isotherm model, respectively. The maximum adsorption capacities (qm) of B1 and B2 adsorbents were obtained as 224.63 mg/g at 25 degrees C and 360.30 mg/g at 45 degrees C, respectively. A suitable combination of surface and CV ion charge was obtained at low pH values (<= 7) of the CV solution. The presence of co-existing NaCl ions did not significantly affect the CV adsorption capacity. When the results were evaluated, it was seen that the montmorillonite-based adsorbents were effective and cost-effective adsorbents for CV dye removal.en_US
dc.identifier.doi10.17341/gazimmfd.1086194
dc.identifier.endpage1917en_US
dc.identifier.issn1300-1884
dc.identifier.issn1304-4915
dc.identifier.issue3en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage1907en_US
dc.identifier.urihttps://doi.org/10.17341/gazimmfd.1086194
dc.identifier.urihttps://hdl.handle.net/20.500.12662/3776
dc.identifier.volume38en_US
dc.identifier.wosWOS:000968663800047en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherGazi Univ, Fac Engineering Architectureen_US
dc.relation.ispartofJournal Of The Faculty Of Engineering And Architecture Of Gazi Universityen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAdsorptionen_US
dc.subjectcrystal violeten_US
dc.subjectisothermen_US
dc.subjectkineticen_US
dc.subjectnanoclayen_US
dc.titleRemoval of crystal violet dye from aqueous solutions using montmorillonite-based nanoclays: Kinetic and equilibrium studiesen_US
dc.typeArticleen_US

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