US EPA

6463639 

Journal Article 

EFFECTIVENESS OF PHOTOCATALYTIC DECOLOURIZATION OF REACTIVE RED 120 DYE IN TEXTILE EFFLUENT USING UV/H sub( 2)O sub( 2) 

Ananthashankar, RG 

2013 

Yes 

American Journal of Environmental Sciences
ISSN: 1553-345X 

Science Publications, Vails Gate Heights Dr Vails Gate NY 12584 United States 

9 

4 

322-322 

The effectiveness of Advanced Oxidation Process for degradation of reactive red 120 dye in aqueous solutions was tested in this present study. Ten different concentrations of the reactive red 120 dye were exposed to UV alone and a combination of UV with two different concentrations of H2O2 for 10 different retention times at the pH of textile effluent. The effect of acidifying the dye solution on the removal efficiency was also investigated. The COD removal efficiency was determined for the most efficient treatment. The dye degradation efficiency obtained after 60 min exposure to UV alone was 27.01% for 50 mg/L dye concentration and 0.33% for 500 mg/L dye concentration. However, the final COD concentrations were higher than the COD discharge limit of 80 mg/L. The COD discharge limit of 80 mg/L could be achieved with UV/ 20 ml/L H2O2 treatment by increasing the exposure time (longer than 60 min). The pH of the treated effluent is within the accepted discharge limit of 6-9. 

; Ultraviolet radiation; Chemical oxygen demand; Effluents; Environmental factors; Degradation; Oxidation; Effluent treatment; Textile industry wastes; pH; Retention Time; Textile industry waste waters; Exposure; Hydrogen Ion Concentration; Color Removal; Dye Concentrations/