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<p class="BATitle">Novel homogeneous catalyst assisted sonocatalytic degradation of dye Direct Blue 71</p>

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Title Statement <p class="BATitle">Novel homogeneous catalyst assisted sonocatalytic degradation of dye Direct Blue 71</p>
 
Added Entry - Uncontrolled Name Bhavani, R ; Government Arts College for Men, Nandanam, Chennai-600 035, Tamil Nadu, India
Sivasamy, A ; Chemical Engineering Area, CSIR-Central Leather Research Institute, Adyar, Chennai-600 020, Tamil Nadu, India
 
Uncontrolled Index Term Advanced oxidation; Dye degradation; Direct Blue; Environmental pollution; Mineralization; Sonocatalysis
 
Summary, etc. <p style="text-align: justify;">Industrial effluents, particularly from dye industry, is one of the major causes of serious concern as it contaminates the environmental water resources and affect human health. Treatment of such contaminants is a challenging area of interest to researchers. In this context, here, we have explored degradation and mineralization of Direct Blue (DB71) dye in aqueous solution by means of ultrasound irradiation at a frequency of 25 kHz and its combination with a novel homogenous sonocatalyst is investigated. The following experiments have been conducted to achieve complete degradation of the dye molecule. In-situ generation of the radicals under ultrasonic irradiation is measured by EPR technique. The effects of various operational parameters such as the effects of pH, dye concentration, catalyst dosage, electrolytes, energy input and kinetics of oxidation processes on the degradation efficiency are studied. COD measurements are also carried out in order to evaluate the mineralization efficiency of DB71. The effect of electrolytes on dye degradation is studied with different inorganic electrolytes. The rate constant decreases with increasing dye concentration. The degradation increases with increasing catalyst concentration and decreases with increasing dye concentration. Sonocatalytic degradation of the dye molecules are observed by UV-visible absorption and TOC measurements. The by-products formation of the sonocalytically degraded dye samples are analyzed by ESI-MS<sup>+</sup> analysis. The catalyst is also tested for its efficiency in the degradation of real dye house effluents.</p>
 
Publication, Distribution, Etc. Indian Journal of Chemistry -Section A (IJCA)
2020-10-06 15:05:21
 
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http://op.niscair.res.in/index.php/IJCA/article/view/41219
 
Data Source Entry Indian Journal of Chemistry -Section A (IJCA); ##issue.vol## 59, ##issue.no## 9 (2020): INDIAN JOURNAL OF CHEMISTRY - SECTION A
 
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