Journal
OZONE-SCIENCE & ENGINEERING
Volume 41, Issue 4, Pages 296-311Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01919512.2018.1535889
Keywords
Ozone decomposition; Activated carbon; Kinetics; Low pH; Mechanism
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Plenty of controversies have recently surrounded the mechanism and kinetics of ozone decomposition process in presence of activated carbon. We have decided to study and explain the source of these controversies, or at least identify it correctly. Several series of experiments were conducted and various parameters (activated carbon amount and grain size, initial ozone concentration, agitation speed) were modified over their course. It was found that widely accepted (pseudo)first-order kinetics cannot explain some observations, and the best fitting was found for half-order kinetics. Ozone decomposition mechanism explaining these results was proposed.
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