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Evaluation of the Degradation Potential of New inorganic cation Exchanger towards Crystal Violet: A UV/Vis DRS study

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Author Affiliations

  • 1Department of Chemistry, Sree Narayana College, Kannur-670007, Kerala, INDIA

Res. J. Recent Sci., Volume 3, Issue (11), Pages 79-84, November,2 (2014)

Abstract

Efficiency for the removal of crystal violet (CV), one of the earliest synthetic dyes, on novel inorganic cation exchanger were studied using UV/Vis DRS. Cerium(IV) arsenomolybdate, a heteropoly acid based cation exchanger were synthesized and characterized using FTIR, XRD, TGA, SEM-EDS techniques. Its composition was found to be Ce: As: Mo; 1.8:1:1.4 and it is quite chemically stable. CeAsMo shows enhanced catalytic activities towards degradation of CV. The oxidizing power of heteropoly acid units and electron exchange character of Ce are credited to the degradation efficiency of the exchanger. The effects of catalyst dosage, pH of the medium, concentration of dye solution, shaking time as well as temperature were ascertained, and the favorable conditions for maximum degradation were determined.CV was degraded more than 95% in the presence of new exchanger within 2 hours. The reproducibility of exchanger’s behavior as catalyst showed at least a three-cycle of degradation process. The degradation of CV in binary dye-metal mixtures has also been considered since dye effluents usually contain many metal ions. Whole studies disclose that the CeAsMo showed higher efficiency towards the removal of Crystal violet dye and can apply them to the target applications of environmental remediation and catalysis.

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