Journal ArticleDOI
Combination of Advanced Oxidation Processes and biological treatments for wastewater decontamination—A review
TLDR
The main conclusions arrived at from the overall assessment of the literature are that more work needs to be done on degradation kinetics and reactor modeling of the combined process, and also dynamics of the initial attack on primary contaminants and intermediate species generation.About:
This article is published in Science of The Total Environment.The article was published on 2011-09-15. It has received 2046 citations till now. The article focuses on the topics: Wastewater & Industrial wastewater treatment.read more
Citations
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Journal ArticleDOI
Coupling between high-frequency ultrasound and solar photo-Fenton at pilot scale for the treatment of organic contaminants: An initial approach
S. Papoutsakis,S. Miralles-Cuevas,Nicolas Gondrexon,Stéphane Baup,Sixto Malato,Cesar Pulgarin +5 more
TL;DR: The observed behavior suggests that its prudent use has the potential to significantly benefit the photo-Fenton process, via the decrease of both treatment time and H2O2 consumption.
Journal ArticleDOI
Strategies to improve biological oxidation of real wastewater using cavitation based pre-treatment approaches.
TL;DR: The present work demonstrates the effective application of pretreatment based on cavitation to improve biological oxidation of real municipal and industrial wastewater with significant reduction in treatment time than the treatment time required for biological oxidation using untreated sludge as inoculum.
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Assessing the Performance of UV/H2O2 as a Pretreatment Process in TOC Removal of an Actual Petroleum Refinery Wastewater and Its Inhibitory Effects on Activated Sludge
Abstract: The treatment of a petroleum refinery wastewater is studied using a bench scale UV/H2O2 photoreactor in batch mode. The average initial total organiccarbon(TOC)concentrationis42mg/L.Moreover,theinitialH2O2concentrations are345,690,and1023mg/Lforinitial H2O2/TOCmolar ratios of 2.9, 5.8, and 8.6, respectively. The results reveal that the highest treatment efficiency of 78.38% for the removal of TOC from the refinery wastewater using the bench scale UV/H2O2 photoreactor occurs at the reaction time of 45min and a pH of 5.0. A three-factor analysis of variance (ANOVA) is used to verify the statistical significance of the initial H2O2/TOC molar ratio, reaction time, and pH on the bench scale UV/H2O2 photoreactor. Furthermore, the respirometry analysis shows that the pretreated refinery wastewater by the UV/H2O2 process is inhibitory on activated sludge (AS) microorganisms. Thus, the UV/H2O2 process is found to be currently not suitable as a pretreatment process for refinery wastewater treatment at these operational conditions.
Journal ArticleDOI
Adsorption of Toluene and Paraxylene from Aqueous Solution Using Pure and Iron Oxide Impregnated Carbon Nanotubes: Kinetics and Isotherms Study
TL;DR: Batch adsorption experiments show that iron oxide impregnated CNTs have higher degree of removal of p-xylene compared with toluene, and Langmuir and Freundlich isotherm models demonstrate good fitting for the advertisersorption data of toluenes and p-Xylene.
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Comparative degradation of two highly consumed antihypertensives in water by sonochemical process. Determination of the reaction zone, primary degradation products and theoretical calculations on the oxidative process.
Efraím A. Serna-Galvis,Laura Isaza-Pineda,Alejandro Moncayo-Lasso,Félix Hernández,María Ibáñez,Ricardo A. Torres-Palma +5 more
TL;DR: Interestingly, the losartan and valsartan eliminations in waters containing other substances, even at higher concentrations than these pollutants, were similar to the observed in distilled water, indicating the high potentiality of ultrasound to degradeLosartan or valartan in waters contained other substances.
References
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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
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Science and technology for water purification in the coming decades
Mark A. Shannon,Paul W. Bohn,Paul W. Bohn,Menachem Elimelech,Menachem Elimelech,John G. Georgiadis,Benito J. Mariñas,Anne M. Mayes,Anne M. Mayes +8 more
TL;DR: Some of the science and technology being developed to improve the disinfection and decontamination of water, as well as efforts to increase water supplies through the safe re-use of wastewater and efficient desalination of sea and brackish water are highlighted.
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Photochemical processes for water treatment
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Advanced Oxidation Processes for Organic Contaminant Destruction Based on the Fenton Reaction and Related Chemistry
TL;DR: In this paper, the complex mechanisms of Fenton and Fenton-like reactions and the important factors influencing these reactions, from both a fundamental and practical perspective, in applications to water and soil treatment, are discussed.