Synthesis and Scaling up of Fe3+ by Sol-gel Method Doped on Ceramic Foam for Decolorization of Reactive Red Dyeing Wastewater

Authors

Pongsak Khaowin
Prukraya Pongyeela
Pichayapan Kongpanna
Juntima Chungsiriporn

Publication Date

2016-05-01

Abstract

Wastewater from the Batiktextile industry contains large amounts of dyestuff together with significant amounts of suspended solids (SS), dispersing agents, salts and trace amounts of me-tals. Since this can lead to severe environmental problems, proper wastewater treatment pro-cesses are essential. The synthesis of Fe3+by sol-gel method doped on a ceramic foam for reac-tive red and disperse dyes removal from synthetic dye wastewater. Inthis research, the effect of color concentration, amount of catalyst and volumetric flow rates for industrial scale were studied.The Fe3+catalyst was prepared by sol-gel method in which 3M of FeCl3was used as a pre-cursor. The synthesized catalyst was characterized by the EDX spectrum from an X-ray spectro-meter. The surface morphology of the catalyst was investigated using a scanning electron microscope (SEM). To determine optimum operating conditions for catalytic testing, variations of disperse and reactive red concentrations (10 to 200 mg L-1) were used. The results indicated that the highest color removal efficiency (up to 96%) was observed when using Fe3+catalyst; 4 piecesper literof solution, and initial pH of 6.0. These conditions were then scaled up for a continuous packed bed column study. It was found that the optimal operating conditions obtained from the mathematical model for reactive red wastewater were: concentration of reactive red in the syn-thetic wastewater20 to 80 mg L-1; amounts of catalyst 432.5 to 1,730 mg and volumetric flow rates of wastewater20 to 200 mL min-1. Up to 84.85% of color removal efficiency was achieved.

First Page

47

Last Page

58

Recommended Citation

Khaowin, Pongsak; Pongyeela, Prukraya; Kongpanna, Pichayapan; and Chungsiriporn, Juntima (2016) "Synthesis and Scaling up of Fe3+ by Sol-gel Method Doped on Ceramic Foam for Decolorization of Reactive Red Dyeing Wastewater," Applied Environmental Research: Vol. 38: No. 2, Article 5.
Available at: https://digital.car.chula.ac.th/aer/vol38/iss2/5