Journal ArticleDOI
Estimation of .OH radical reaction rate constants for phenol and chlorinated phenols using UV/H2O2 photo-oxidation.
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TLDR
A mechanistic model for UV/H2O2 photooxidation has been developed and room temperature (27 degrees C) rate constants for the reaction of .OH radical with the substrates have been estimated by using the model equation.About:
This article is published in Journal of Hazardous Materials.The article was published on 1999-01-01. It has received 97 citations till now. The article focuses on the topics: Reaction rate constant & Radical.read more
Citations
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Photocatalytic oxidation of organic dyes and pollutants in wastewater using different modified titanium dioxides: A comparative review
TL;DR: In this article, the effectiveness of pure and modified TiO2 for photocatalytic degradation of different organic matters and clarifies the advantages of the modifiedTiO2 with photoactivity under visible light.
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Chemical oxidation of methylene blue using a Fenton-like reaction.
TL;DR: The results indicate that the dye can be most effectively oxidized in aqueous solution at dye:Fe(2+):H2O2 molar ratio of 1:1.1, which corresponds to about 81% reduction of the initial COD.
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Nano-sized magnetic iron oxides as catalysts for heterogeneous Fenton-like reactions—Influence of Fe(II)/Fe(III) ratio on catalytic performance
TL;DR: Degradation experiments with various structurally distinct compounds were carried out, indicating a similar selectivity of the heterogeneous Fenton-like system to that known for oxidation with ·OH.
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Photo-degradation of chlorophenols in the aqueous solution
TL;DR: The chlorophenols photo-degradation kinetics and mechanism in the aquatic environment under UV-vis in the presence of hydroxyl radicals and singlet oxygen is presented and pathways for intermediate reactions e.g. dechlorination, oxidation, dimerization are presented.
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Simultaneous removal of NO and SO2 from coal-fired flue gas by UV/H2O2 advanced oxidation process
TL;DR: In this paper, the effects of UV lamp power and H2O2 concentration on NO and SO2 removal efficiencies were studied in an ultraviolet (UV)-bubble column reactor, and the results showed that under all conditions, SO2 achieved 100% removal.
References
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Journal ArticleDOI
Destruction of trichloroethylene by UV light-catalyzed oxidation with hydrogen peroxide
TL;DR: In this paper, the authors investigated the kinetics of trichloroethylene oxidation by ultraviolet light and hydrogen peroxide and found that the reaction rate of trici-ethylene was first order in ultraviolet light intensity and pseudo-first order in triciethylene concentration.
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Kinetics of Phenol Photooxidation by Hydrogen Peroxide and Ultraviolet Radiation
TL;DR: In this article, a kinetic model is derived in order to represent the photooxidation reaction of phenol by H2O2 and ultraviolet radiation, and a mechanistic explanation of the behavior has been presented.
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Photooxidation of phenol in aqueous solution in the presence of hydrogen peroxide
TL;DR: In this article, the combination of ultraviolet light and hydrogen peroxide was demonstrated to be a useful method for removing COD and TOC in aqueous phenol solutions, which decreased to nearly zero.
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Photooxidation of Some Mono‐, Di‐, and Tri‐chlorophenols in Aqueous Solution by Hydrogen Peroxide/UV Combinations
Reşat Apak,Mehmet Hugül +1 more
TL;DR: In this paper, the photooxidation reaction approached pseudo-first order kinetics, and the rate constants increased with increasing ratio of the oxidant, and a theoretical model for the degradation pathway was proposed.
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Photochemical oxidation of protocatechuic acid
TL;DR: In this article, a simple mechanism of three steps was proposed for the photodecomposition reaction, which provided the determination of the quantum yields and was well correlated by an expression which took into account the influence of the temperature and pH on them.