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An Analysis of ZnO Assisted Photocatalytic Degradation of Giemsa Dye

Leena Bharadwaj, Mohit Bhardwaj and M. K. Sharma

Present investigation analyzes various parameters of water after ZnO assisted photocatalytic degradation of Giemsa dye in aqueous suspension. Significant changes were noted in alkalinity, turbidity, hardness, nitrate, calcium ion concentration, chloride ion concentration, magnesium ion concentration, COD, BOD, sulfate ion concentration, temperature and pH. At pH 8.6 various investigated parameters were found within the WHO standards of drinking water. Photocatalytic treatment of waste water needs to be accompanied with secondary treatment to ensure environmental safety.