INTERNATIONAL RESEARCH JOURNAL OF SCIENCE ENGINEERING AND TECHNOLOGY

( Online- ISSN 2454 -3195 ) New DOI : 10.32804/RJSET

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PHOTOCATALYTIC DEGRADATION OF CONGO RED USING ZINC SULPHATE AS A CATALYST

    2 Author(s):  JUNGLE S K , PATIL D B

Vol -  6, Issue- 1 ,         Page(s) : 18 - 27  (2016 ) DOI : https://doi.org/10.32804/RJSET

Abstract

The present study involves the photocatalytic decolorization of Congo Red (CR) by employing heterogeneous photocatalytic semiconductor. An attempt has been made to study the effect of process parameters viz., amount of catalyst, concentration of dye, pH, and irradiation time on photocatalytic degradation of Congo Red. The experiment was carried out by irradiating the aqueous solutions of CR containing photocatalysts inside the batch reactor having UV light. The rate of decolorization was estimated from residual concentration by spectrophotometrically. Similar experiments were carried out by varying pH (2–14), amount of catalyst (0.05–0.2 g/l) time variation (2-30) minutes and initial concentration of dye (2-100 mg/l). The experimental results indicated that the maximum decolorization of CR (more than 90%) occurred at pH 7 using ZnSO4. The performance of ZnSO4/UV was excellent throughout the experiment.

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