Chemical and Biomolecular Engineering Faculty Research

Title

Effects of Pressure, Temperature, and Ph on the Sonochemical Destruction of 1, 1, 1-trichloroethane in Dilute Aqueous Solution

Document Type

Article

Publication Date

Spring 2001

Abstract

There is an increasing interest in the application of high intensity ultrasound as an advanced oxidation technique. In this study, 1,1,1-trichloroethane (TCA) is the compound being subjected to ultrasonic irradiation. The study focuses on the effects of pressure (0.103–0.241 MPa), temperature (6–19.4°C) and pH (3.96–12.5). Optimum conditions of treatment are discerned from the results of the experiments based on a center composite design. The results show that about 98% of TCA can be removed in 1 h of treatment (starting concentrations average 80 mg/l). Also, experiments indicate that the initial concentration does not affect destruction rate in this system. Optimum conditions as indicated by statistical analysis are at T=14.2°C, P=0.212 MPa and pH=10.9. This study also presents a method to normalize rate constants for changes in the power-to-volume ratio.

Publication Title

Ultrasonics Sonochemistry

Volume

8

Issue

2

First Page

103

Last Page

109