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H2O2 assisted photocatalytic degradation of hazardous Colours using CaO

Author Affiliations

  • 1Govt College of Arts Science & Commerce, Khandola, Goa, India

Res. J. Recent Sci., Volume 11, Issue (2), Pages 19-22, April,2 (2022)

Abstract

Holi colours discharged into water bodies are a menace to the aquatic life. Photodegradation of a commercial orange holi colour using CaO photocatalyst and combination of CaO/H2O2 is attempted in the present investigation. The orange holi colour is a mixture of yellow and pink organic dyes. CaO photocatalyst synthesized by citrate gel method removes yellow dye of the sample but CaO/ H2O2, removes both dyes from orange colour within 15 minutes of exposure to sunlight. Huge load of organic carbon and proliferation of microbial colonies are observed in waters in which holi colour is discharged. Organic carbon in coloured water treated with CaO/H2O2 indicates that only chromophore responsible for colour is broken down and photodegradation is not complete. However CaO/H2O2 deactivates the micro-organisms in the treated water.

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