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Integrated Approach to the Problems of Dye Wastewater by Sonolysis and Biological Treatment
Mohammed A Fayidh, S Babuskin, K Sabina, M Sukumar and M Sivarajan
The degradation of a reactive dye by combined sonolysis (40 kHz) and biodegradation was studied using Acid red (AR 66) as a model dye. The combined action of ultrasound and biodegradation using Bacillus subtilis was characterized as a function of dye concentration, pH and temperature. Under optimum conditions, AR 66 could be completely degraded within 10 h. The COD analysis was performed and was found that about 90-95% COD reduction was achieved by this hybrid technique. The biodegradation data for AR 66 were fitted to Bridge- Haldane equation with good correlation.