LAUSR

Abstract In this work, diethylene triamine pentacetic acid (DTPA) stabilized nano scale zero valent iron (nZVI)) has been synthesized through co precipitation method. A systematic characterization of DTPA stabilized nZVI has been performed. It has been found that DTPA stabilized nZVI is well dispersed with less aggregation. Average particle size obtained is within 50 nm. In the presence of ultrasound irradiation (US), the degradation of some water pollutants like methyl orange (MO), azo based textile dyes and phenols by the help of DTPA stabilized nZVI is recorded over 95 %, 85 %within 10−15 min and 70 % within 30−40 min respectively. In this work, the ac conductivity of different water pollutants during degradation has also been studied which shows prominent distinguishable characteristics and helps to get an idea about the degradation of the pollutants without using spectrophotometric analysis. Reusability of nanoparticles was monitored in this work up to three cycles. 85 % MO degradation have been observed up to the last cycle.