Publication

Combination of ozone with activated carbon as an alternative to conventional advanced oxidation processes

Urs von Gunten
2006
Journal paper
Abstract

The objective of this study was to compare the efficiency of O-3/granular activated carbon (GAC) to enhance ozone transformation into circle OH radicals, with the common advanced oxidation processes (O-3/OH-, O-3/H2O2). The results obtained with model systems under the given experimental conditions showed that the system O-3/OH- (pH 9) and O-3/H2O2 (pH 7, [H2O2] = 1 circle 10(-5) M) are more efficient than O-3/GAC (pH 7, [GAC] = 0.5 g/L) to enhance ozone transformation into circle OH radicals. However, in Lake Zurich water the O-3/GAC process has a similar efficiency as O-3/H2O2 for ozone transformation into circle OH radicals. The results also show that the presence of GAC during Lake Zurich water ozonation leads to (i) removal of hydrophilic and hydrophobic micropollutants, (ii) reduction of the concentration of CO32-/HCO3-, and (iii) decrease of the concentration of dissolved organic carbon (DOC) present in the system.

About this result
This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chatbot

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.