Original scientific paper

https://doi.org/10.31803/tg-20180201002727

Heterogeneous Fenton-like decolorization of Procion Red MX-5B with iron-alginate gel beads

Memduha Ergüt* ; Mersin University, Faculty of Engineering, Department of Chemical Engineering, Mersin University Çiftlikköy Campus F Block, 33343, Yenişehir/Mersin, Turkey
Ayla Özer ; Mersin University, Faculty of Engineering, Department of Chemical Engineering, Mersin University Çiftlikköy Campus F Block, 33343, Yenişehir/Mersin, Turkey

Abstract

In the present study, iron-alginate gel beads (Fe-Alg gel beads) were synthesized by the entrapment method and subsequently, the prepared gel beads were characterized by FTIR, SEM, and EDX analysis methods. The characterization studies showed that Fe-Alg gel beads were of spherical morphology and iron was successfully entrapped in alginate. Subsequently, the synthesized Fe-Alg gel beads were used as a heterogeneous catalyst for the decolorization of a hazardous azo-dyestuff, Procion Red MX-5B (PR MX-5B), with Fenton-like decolorization. The effects of process parameters such as initial pH, H2O2 concentration, initial dye concentration and catalyst concentration on Fenton-like decolorization were investigated. For Fenton-like decolorization of PR MX-5B, the optimum process parameters were determined to be pH: 3.0, 20 mμ of H2O2 concentration, 50 mg/L of initial dye concentration, and 5.0 g/L of catalyst concentration, respectively. The reaction kinetics was well fitted to second order reaction kinetics. As a result, the synthesized gel beads have a high color removal efficiency for PR MX-5B dye from an aqueous solution.

Keywords

decolorization; gel beads; heterogeneous Fenton-like catalyst; iron-alginate; Procion Red MX-5B

Hrčak ID:

229498

URI

https://hrcak.srce.hr/229498

Publication date:

11.12.2019.

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