Journal ArticleDOI
Rate constants for direct reactions of ozone with several drinking water contaminants
C. C. David Yao,Werner R. Haag +1 more
TLDR
In this article, rate constants for the direct reactions of ozone with 45 potential organic drinking water contaminants, including solvents, haloalkanes, esters, aromatics and pesticides (such as alachlor, aldicarb, atrazine, carbofuran, 2,4-dichlorophenoxyacetic acid, endrin, glyphosate), have been measured in water in the presence of hydroxyl radical scavengers to minimize interfering radical chain reactions.About:
This article is published in Water Research.The article was published on 1991-07-01. It has received 304 citations till now. The article focuses on the topics: Reaction rate constant & Hydroxyl radical.read more
Citations
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Journal ArticleDOI
Ozonation of drinking water: part I. Oxidation kinetics and product formation.
TL;DR: The second-order rate constants for oxidation by ozone vary over 10 orders of magnitude, between o 0.1 M 1 s 1 s -1 and about 7 − 10 9 M 1 S -1 s - 1 s − 1 as discussed by the authors.
Journal ArticleDOI
Hydroxyl Radical/Ozone Ratios During Ozonation Processes. I. The Rct Concept
TL;DR: In this paper, a new parameter, Rct, representing the ratio of the √OH-exposure to the ozone exposure was calculated as a function of reaction time for most waters tested, including pH-buffered model systems and natural waters.
Journal ArticleDOI
The use of ozone and associated oxidation processes in drinking water treatment
Valérie Camel,Alain Bermond +1 more
TL;DR: The main applications of ozonation and associated oxidation processes in the treatment of natural waters (surface and ground waters) for drinking water production are summarized in this paper, where numerous effects of chemical oxidation are discussed along the water treatment: removal of inorganic species, aid to the coagulation-floculation process, degradation of organic matter and disinfection.
Journal ArticleDOI
Hydroxyl Radical/Ozone Ratios During Ozonation Processes. II. The Effect of Temperature, pH, Alkalinity, and DOM Properties
TL;DR: In this paper, the influence of temperature, pH, alkalinity, and type and concentration of the dissolved organic matter (DOM) on the rate of ozone decomposition, O3-exposure, •OHexposure and the ratio Rct of the concentrations of •OH and O3 has been studied.
Book ChapterDOI
Chemistry of Aqueous Ozone and Transformation of Pollutants by Ozonation and Advanced Oxidation Processes
TL;DR: Ozonation is widely and successfully applied for many types of oxidative water treatments and its chemical effects can be described by considering the sequences of highly selective direct reactions of molecular ozone and the reactions of more reactive but less selective OH radicals which are always produced from decomposed ozone in aqueous systems as mentioned in this paper.
References
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Journal ArticleDOI
Critical Review of rate constants for reactions of hydrated electrons, hydrogen atoms and hydroxyl radicals (⋅OH/⋅O− in Aqueous Solution
TL;DR: In this article, the rate constants for over 3500 reaction are tabulated, including reaction with molecules, ions and other radicals derived from inorganic and organic solutes, and the corresponding radical anions, ⋅O− and eaq−, have been critically pulse radiolysis, flash photolysis and other methods.
Journal Article
Critical review of rate condtants for reaction of hydrated electrons, hydrogen atoms and hydroxyl radicals in aqueous solution
Journal ArticleDOI
Rate Constants for Reactions of Inorganic Radicals in Aqueous Solution
TL;DR: In this article, rate constants have been compiled for reactions of various inorganic radicals produced by radiolysis or photolysis, as well as by other chemical means in aqueous solutions.
Journal ArticleDOI
Determination of ozone in water by the indigo method
TL;DR: In this article, the decolorization of indigo trisulfonate (600 nm, pH below 4) was used to determine the concentration of aqueous ozone in the range 0.005 −30 mg 1−1.
Journal ArticleDOI
Rate constants of reactions of ozone with organic and inorganic compounds in water-II dissociating organic compounds
J. Hoigné,H. Bader +1 more
TL;DR: In this article, the rate constants of reactions of ozone with non-ionized solutes, such as aliphatic alcohols, olefins, chlorosubstituted ethylenes, substituted benzenes and carbohydrates, have been determined from the absolute rates with which ozone reacts in the presence of various concentrations of these compounds in water.
Related Papers (5)
Rate constants of reactions of ozone with organic and inorganic compounds in water-II dissociating organic compounds
J. Hoigné,H. Bader +1 more