Minimization of organic pollutant content in aqueous solution by means of AOPs: UV- and ozone-based technologies [An article from: Chemical Engineering Journal]

This digital document is a journal article from Chemical Engineering Journal, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
The study involved comparative investigations of the efficiency of several ozone- and/or UV-based processes: O"3, O"3/H"2O"2, UV/H"2O"2, UV/O"3 and UV/H"2O"2/O"3, for the minimization of phenol as a model hazardous pollutant in wastewater. For all applied AOPs the best experimental conditions concerning selected varied process parameters, initial pH and H"2O"2 dosage, were determined. Different AOPs were evaluated on the basis of their eco-effectiveness, by the means of phenol decay and TOC value decrease, and their cost-effectiveness. It was established that the complete phenol removal can be achieved by adjusting the pH and H"2O"2 dosage. The overall mineralization extent depended on the type of process, number and type of oxidants and/or UV light, and their studied processes parameters as well. The highest overall mineralization extent, 58.0% TOC removal, was achieved by UV/H"2O"2/O"3 process. From the aspect of both eco- and cost- effectiveness, UV/H"2O"2/O"3 was shown as the most suitable process.