Photochemical Oxidation of Phenol and Chlorophenol by UV/H2O2/TiO2 Process : A Kinetic Study

Dixit, Abhilasha; Mungray, Arvind Kumar; Chakraborty, Mousumi

doi:10.7763/ijcea.2010.v1.42

Cited by 22 publications

(20 citation statements)

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“…The interaction of magnetite with anionic atrazine species would also be inhibited as the surface of magnetite is negatively charged. Similarly, low oxidative degradation rate of phenols is reported by UV/H 2 O 2 /TiO 2 system at basic pH …”

Section: Figurementioning

confidence: 99%

Efficacious and Selective Oxidation of Atrazine with Hydrogen Peroxide Catalyzed by Magnetite Nanoparticles: Influence of Reaction Media

et al. 2018

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Section: Figurementioning

confidence: 99%

Efficacious and Selective Oxidation of Atrazine with Hydrogen Peroxide Catalyzed by Magnetite Nanoparticles: Influence of Reaction Media

et al. 2018

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“…Different AOPs removing phenolic compounds have been reported, such as UV/H 2 O 2 [28], UV/catalyst [29], photo-Fenton process [30], MW/NiO [31], UV/H 2 O 2 /TiO 2 [32,33], O 3 /ZnO [34] and UV/O 3 /TiO 2 [12]. Despite extensive research, robust and economical treatment of the 4-CP has still to be implemented, and, there is a continued need to develop effective systems.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of 4-chlorophenol by UV/H2O2/NiO process in aqueous solution

Alimoradzadeh

Assadi

Nasseri

et al. 2012

J Environ Health Sci Engineer

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The removal of 4-chlorophenol from aqueous phase continues to be an important environmental issue. In this work, the photochemical oxidation of 4-chlorophenol in aqueous solutions in a batch reactor using ultraviolet irradiation, hydrogen peroxide and nickel oxide was studied. The efficiency of the system was evaluated with respect to reaction time, pH, feed concentration of reactants, catalyst load, light intensity, and the reaction rate constant. The concentrations of 4-chlorophenol and chloride ions were determined by high performance liquid chromatography and ion chromatography, respectively. Pure nanosized nickel oxide was characterized by X-ray diffraction and scanning electron microscopy. The results showed that the optimum conditions (the complete 4-chlorophenol removal (100%) at 60 min) were obtained at a neutral pH, with 0.2 mol/L H2O2, and 0.05 g/L of nickel oxide. However, no pH effects were observed in the range of 4–10. Analytical profiles on 4-chlorophenol transformation were consistent with the best line fit of the first-order kinetics. Moreover, the degradation rate constant increased with both UV light intensity and decreasing initial concentration of 4-chlorophenol. Finally, the results of mineralization and chloride ions studies indicated that dechlorination was better accomplished but more time was required to completely mineralize 4-chlorophenol into water and carbon dioxide.

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“…In addition, the establishment of large-scale monitoring networks was designed to enable a better understanding of fate and transport mechanisms in the environment, including soil, water and air, was necessary. Global percentages of micropollutants removal achieved were 98 and a 97 %, respectively, after 0.5 h of treatments Cruz et al 33 40 Dixit et al 35…”

Section: Contaminated Areamentioning

confidence: 94%

Removal of Endocrine Disrupting Compounds in Drinking Water

Sun¹,

Zheng-an²,

Xu³

et al. 2014

Asian J. Chem.

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Various adverse health effects of endocrine disrupting compounds (EDCs) had been reported in recent years. Endocrine disrupting compounds also called environmental hormones, were exogenous endocrine disrupting compounds discharged into the environment by industrial production processes and could interfere with the endocrine systems of humans or animals abnormal and generate carcinogenic, teratogenic and mutagenic substances. They were widely distributed in the biosphere, by precipitation, surface runoff, the use of pesticide and water pollution, through the enrichment of drinking water and food chain leading serious harm to humans and organisms. Such compounds indirectly cause humans toxic and abnormal, but induce the estrogen-like effects on the organism directly. Even if the content is very low, endocrine disrupting compounds could threaten serious harm to human health and survival. In recent years, various kinds of endocrine disrupting compounds were also detected in the rivers and lakes in China with the rapid development of economy. Human exposure to very low dose during critical periods, for example at the cellular differentiation period, could alter the development course of these tissues and this may result in permanent character changes in the mature living beings 1. Recent toxicity studies indicated that bisphenol A exposure in

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Photochemical Oxidation of Phenol and Chlorophenol by UV/H2O2/TiO2 Process : A Kinetic Study

Cited by 22 publications

References 0 publications

Efficacious and Selective Oxidation of Atrazine with Hydrogen Peroxide Catalyzed by Magnetite Nanoparticles: Influence of Reaction Media

Efficacious and Selective Oxidation of Atrazine with Hydrogen Peroxide Catalyzed by Magnetite Nanoparticles: Influence of Reaction Media

Photocatalytic degradation of 4-chlorophenol by UV/H2O2/NiO process in aqueous solution

Removal of Endocrine Disrupting Compounds in Drinking Water

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