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Kinetics of ozone decomposition and reaction with organics in water
Author(s) -
Hewes C. G.,
Davison R. R.
Publication year - 1971
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690170129
Subject(s) - ozone , decomposition , chemistry , effluent , chemical decomposition , kinetics , order of reaction , first order , reaction rate , environmental chemistry , organic matter , sewage , inorganic chemistry , reaction rate constant , environmental engineering , organic chemistry , environmental science , catalysis , physics , quantum mechanics , mathematics
The decomposition of ozone in water is found to be second order at pH 2 and 4 with the rate insensitive to pH. At pH 6 the reaction order is 3/2 to 2 and at pH 8 it is first order. Above pH 6 the rate increases rapidly with pH. Ozonation can greatly reduce the organic matter in waste water. The reaction rate of ozone with organics in flocculated secondary sewage effluent is found to depend on the rate of ozone decomposition, which is independent of the subsequent reaction with the organics.