US EPA

625266 

Journal Article 

Rate constants of reactions of ozone with organic and inorganic compounds in water—II: Dissociating organic compounds 

Hoigné, J; Bader, H 

1983 

1 

Water Research
ISSN: 0043-1354
EISSN: 1879-2448 

17 

2 

185-194 

English 

10.1016/0043-1354(83)90099-4 

WOS:A1983PY89100009 

Comprehensive lists of rate constants of reactions of ozone with acidic and basic organic chemicals dissolved in water, such as amines, amino acids, carboxylic acids and phenols are reported. The second-order rate constants increase with pH as does the degree of deprotonation of the dissolved substances, e.g. from 1 to 100 M−1 s−1 for formic acid, from 0.2 to 2 M−1 s−1 for glyoxalic acid and from 103 to 109 M−1 s−1 for phenolic compounds. All results support the conclusions presented in Part 1 for the electrophilic reactions of ozone with non-dissociating compounds. They are important for the understanding of the pH dependence of the rate and selectivity of ozonation reactions and for explaining the chemical effects of ozone on impurities in drinking water and waste waters.