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Kinetics and products of the Reactions of Ozone with Various forms of Chlorine and Bromine in Water

Werner R. Haag, Juerg. Hoigne

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Abstract

Ozone reacts with various halogen compounds (chlorine, chloramines , bromine , and bromide) which may be present in water. Chlorine produces Cl− and ClO− 3; chloramines produce NO− 3 and Cl−. Bromide produces bromine , which acts as a secondary disinfectant, but can generate haloforms and interfere in O3 determinations. Brominepartly regenerates Br causing a catalytic destruction of O3. The kinetics of these reactions are described and interpreted with respect to their importance in water treatment.

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What this paper is about

Ozone reacts with various halogen compounds (chlorine, chloramines , bromine , and bromide) which may be present in water. Chlorine produces Cl− and ClO− 3; chloramines produce NO− 3 and Cl−. Bromide produces bromine , which acts as a secondary disinfectant, but can generate haloforms and interfere in O3 determinations. Brominepartly regenerates Br causing a catalytic destruction of O3. The kinetics of these reactions are described and interpreted with respect to their importance in water treatment.

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Available abstract

Ozone reacts with various halogen compounds (chlorine, chloramines , bromine , and bromide) which may be present in water. Chlorine produces Cl− and ClO− 3; chloramines produce NO− 3 and Cl−. Bromide produces bromine , which acts as a secondary disinfectant, but can generate haloforms and interfere in O3 determinations. Brominepartly regenerates Br causing a catalytic destruction of O3. The kinetics of these reactions are described and interpreted with respect to their importance in water treatment.

Key concepts: Chloramine, Bromine, Chlorine, Chemistry, Halogen, Ozone, Bromide, Kinetics

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