CHROMIUM (Cr(VI)) REMOVAL FROM WATER WITH BENTONITE-MAGNETITE NANOCOMPOSITE USING RESPONSE SURFACE METHODOLOGY (RSM)

Authors : Pınar BELİBAĞLI, Buşra Nur ÇİFTCİ, Yağmur Uysal UYSAL

Pages : 1217-1233

View : 33 | Download : 3

Publication Date : 2021-10-05

Article Type : Research Paper

Abstract :In this study, magnetite nanocomposites coated with bentonite were synthesized as adsorbent material and their effects in Cr insert ignore into journalissuearticles values(VI); adsorption were investigated. Magnetite nanomaterials insert ignore into journalissuearticles values(Bentonite-Fe3O4); were characterized by surface morphology insert ignore into journalissuearticles values(SEM-EDX); and elemental analyses insert ignore into journalissuearticles values(FTIR);. RSM was used to investigate the optimum ambient conditions of parameters for the removal of Cr insert ignore into journalissuearticles values(VI); ions. Isotherm and kinetic models were calculated to determine the mechanism of adsorption, and obtained results showed that Cr insert ignore into journalissuearticles values(VI); adsorption by Bentonite-Fe3O4 was more suitable for Tempkin isotherm insert ignore into journalissuearticles values(R2:0.99); and second-order kinetic model insert ignore into journalissuearticles values(R2:1);. The optimum adsorption efficiency insert ignore into journalissuearticles values(77.46%); of Cr insert ignore into journalissuearticles values(VI); ions in 6.5 mg/L concentration was obtained at contact time of 60 min, pH 2.0, adsorbent dosage of 2.5 g/L and at 35 oC.
Keywords : Adsorption, bentonite, chromium, nanomagnetite, response surface methodology

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