Adsorption of methyl orange onto iron oxide coated zeolite/ potassium permanganate coated zeolite
- 30 March 2018
- journal article
- Published by Kahramanmaras Sutcu Imam University Journal of Engineering Sciences in Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi
- Vol. 21 (1), 43-54
- https://doi.org/10.17780/ksujes.342939
Abstract
Tr en Bu çalışmada sulu çözeltiden potasyum permanganat kaplı zeolit (PMKZ) ve demir oksit kaplı zeolit (DKZ) kullanarak metil oranjın adsorpsiyonla giderimi araştırılmıştır. Adsorbentler SEM ve EDX ile karakterize edilmiştir. Temas süresi, adsorban dozu, başlangıç pH ve başlangıç kirletici konsantrasyonu gibi parametrelerin etkileri incelenmiş ve belirlenen optimum koşullarda denge ve kinetik çalışmalar yapılmıştır. MO molekülleri DKZ ve PMKZ tarafından düşük pH’da başarılı bir şekilde adsorplanmıştır. Adsorpsiyon kinetikleri yalancı-birinci derece, yalancı-ikinci derece, intrapartiküler difüzyon ve Elovich kinetik modelleri ile test edilmiştir. Denge verileri Langmuir, Freundlich ve Temkin izotherm modellerinde değerlendirilmiştir. Her iki adsorban için de adsorpsiyonun Langmuir izotherm modeli ile uyumlu olduğu görülmüştür. Maksimum Langmuir adsorpsiyon kapasitesi DKZ için 12,6 mg g-1, PMKZ için 14,3 mg g-1 olarak bulunmuştur. Reaksiyon kinetikleri yalancı- birinci derece reaksiyon kinetiği ile uyum göstermiştir. Removal of methyl orange (MO) from aqueous solution onto iron oxide coated zeolite (ICZ) and potassium permanganate coated zeolite (MCZ) were investigated. The adsorbents was characterized using EDX and SEM images. The effect of various parameters such as initial dye concentration, contact time, adsorbent dose and initial solution pH was examined. The adsorption studies include both equilibrium adsorption isotherms and kinetics. Several isotherm models were investigated and the adsorption isotherm data were best represented by the Langmuir isotherm model and Langmuir monolayer adsorption capacities of ICZ and MCZ were 12,6 mg g-1, 14,3 mg g-1 , respectively. The kinetic data were well described by the pseudo-first order kinetic model. The mechanism of the adsorption process was determined from the intraparticle diffusion model.Keywords
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