Abstract

Richa Tiwari, M.K. Sharma and S.C. Ameta

The photocatalytic bleaching of bromophenol blue was carried out in the presence of semiconductor ZnO and the progress of the reaction was observed physically, chemically and spectrophotometrically. Zinc oxide appears to be a suitable alternative for water treatment. A detailed investigation of improving the quality of dye contaminated water after photocatalytic degradation has been studied. Photocatalytic degradation is mainly affect the parameters like COD, BOD, nitrate, sulphate and hardness. Photocatalytic treatment significantly reduces COD and increases the biodegradability The result showed complete colour removal, approx 50% COD reduction, 19.2 % nitrate reduction, pH, hardness, magnesium reduction along with enhancement in conductivity and in the biodegradability of the polluted water (dye containing) which shows the mineralization of the water

Bromophenol blue; photocatalytic tretment; quality parameter; ZnO.

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