This study investigated the effect of ultrasound (US) enhancement on the degradation of 2,4-DCP in a new Fenton like system. An obviously synergistic effect was observed after introduction of US into the Fe/EDTA system. Good correspondences with pseudo-first-order kinetic were found in each reaction system. It was demonstrated that the degradation rate constant (kobs) of DCP in US/Fe/EDTA was 7 and 32 times higher than those in Fe/EDTA and US system alone. Simultaneously, lower first-order kobs was also obtained in the investigation of decomposition of EDTA. At 60 min reaction time, Removals of 81% TOC, complete DCP and 89% EDTA were achieved. Low molecular weight organic acids are identified as the main products, which contribute to the solution self-buffer at about pH 6.5 along with the reaction. In addition, the effect of initials condition, i.e., iron addition, EDTA dosage, DCP concentration and US input power as well as reaction temperature were studied and reaction activation energy (Ea) was also calculated.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.