TY - JFULL AU - N. P. Dhanalakshmi and R. Nagarajan PY - 2011/12/ TI - Ultrasonic Intensification of the Chemical Degradation of Methyl Violet: An Experimental Study T2 - International Journal of Chemical and Molecular Engineering SP - 1032 EP - 1038 VL - 5 SN - 1307-6892 UR - https://publications.waset.org/pdf/13939 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 59, 2011 N2 - The sonochemical decolorization and degradation of azo dye Methyl violet using Fenton-s reagent in the presence of a high-frequency acoustic field has been investigated. Dyeing and textile effluents are the major sources of azo dyes, and are most troublesome among industrial wastewaters, causing imbalance in the eco-system. The effect of various operating conditions (initial concentration of dye, liquid-phase temperature, ultrasonic power and frequency and process time) on sonochemical degradation was investigated. Conversion was found to increase with increase in initial concentration, temperature, power level and frequency. Both horntype and tank-type sonicators were used, at various power levels (250W, 400W and 500W) for frequencies ranging from 20 kHz - 1000 kHz. A 'Process Intensification' parameter PI, was defined to quantify the enhancement of the degradation reaction by ultrasound when compared to control (i.e., without ultrasound). The present work clearly demonstrates that a high-frequency ultrasonic bath can be used to achieve higher process throughput and energy efficiency at a larger scale of operation. ER -