http://publicationslist.org/data/meng.chong/ref-18/sdarticle.pdf

Recent Developments in Photocatalytic Water Treatment Technology: A Review

Fenton chemistry encompasses reactions of hydrogen peroxide in the presence of iron to generate highly reactive species such as the hydroxyl radical and possibly others. In this review, 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. The review covers modified versions including the photoassisted Fenton reaction, use of chelated iron, electro-Fenton reactions, and Fenton reactions using heterogeneous catalysts. Sections are devoted to nonclassical pathways, by-products, kinetics and process modeling, experimental design methodology, soil and aquifer treatment, use of Fenton in combination with other advanced oxidation processes or biodegradation, economic comparison with other advanced oxidation processes, and case studies.

/pdf/advanced-oxidation-processes-for-organic-contaminant-546ow329vb.pdf

Advanced Oxidation Processes for Organic Contaminant Destruction Based on the Fenton Reaction and Related Chemistry

2.2. Fenton’s Chemistry 6575 2.2.1. Origins 6575 2.2.2. Fenton Process 6575 2.3. Photo-Fenton Process 6577 3. H2O2 Electrogeneration for Water Treatment 6577 3.1. Fundamentals 6578 3.2. Cathode Materials 6579 3.3. Divided Cells 6580 3.4. Undivided Cells 6583 4. Electro-Fenton (EF) Process 6585 4.1. Origins 6585 4.2. Fundamentals of EF for Water Remediation 6586 4.2.1. Cell Configuration 6586 4.2.2. Cathodic Fe2+ Regeneration 6586 4.2.3. Anodic Generation of Heterogeneous Hydroxyl Radical 6587

Electro-Fenton process and related electrochemical technologies based on Fenton's reaction chemistry

Decontamination and disinfection of water by solar photocatalysis: Recent overview and trends

http://repository.ias.ac.in/39608/1/49_pub.pdf

A review of imperative technologies for wastewater treatment I: oxidation technologies at ambient conditions

The photo-Fenton reaction (Fe3+ + H2O2 + UV) has potential applications in wastewater treatment. This reaction was compared to H2O2 photolysis and other reactions that produce only hydroxyl radicals (OH•) in order to probe for additional or alternative intermediates that may contribute to the recognized potency of photo-Fenton as an oxidant of organic compounds. Distinct differences were found between photo-Fenton and genuine OH• reactions. The kinetic deuterium isotope effect (KDIE) for cyclohexane in the photo-Fenton reaction increases from 1.2 to 1.4 with increasing concentration of OH• scavenger, tert-butyl alcohol; whereas the KDIE in genuine OH• reactions (H2O2/UV, Fe3+/UV, and Fe2+ + H2O2) is 1.1 and unchanged in the presence of tert-butyl alcohol. Photo-Fenton catalyzed the epoxidation of cyclohexene at a much greater rate than H2O2/UV. The relative yields of chlorinated organic acids from 1,1,2-trichloroethane, trichloroethene, and tetrachloroethene oxidation were markedly affected by the presenc...

Evidence for an Additional Oxidant in the Photoassisted Fenton Reaction

Degradation of selected pesticide active ingredients and commercial formulations in water by the photo-assisted Fenton reaction

Perhalogenated aliphatic compounds in water are difficult to degrade by advanced oxidation processes that rely on hydroxyl radical as the reactive oxidant. We have successfully degraded carbon tetrachloride and hexachloroethane in UV-illuminated (300−400 nm) acidic oxic or anoxic solutions containing Fe(III) and oxalate. Kinetic and product studies were carried out to elucidate the mechanism and role of O2. The initial step is a one-electron reduction of the perhaloalkane by CO2•-, which is generated by photolysis of iron(III) oxalate complexes. The products are lower-chlorinated compounds, several of which are unreactive toward CO2•-. In the presence of O2, the reaction is catalytic in Fe(III) due to the re-oxidation of Fe(II) by oxo-radical intermediates; however, O2 also retards the rate by scavenging CO2•-. After the perhalogenated substrate has been transformed, the system can be made oxidizing by the addition of H2O2, resulting in mineralization of the remaining organochlorine intermediates by a pho...

Patrick L. Huston

Papers

Evidence for an Additional Oxidant in the Photoassisted Fenton Reaction

Degradation of selected pesticide active ingredients and commercial formulations in water by the photo-assisted Fenton reaction

Reduction of perchloroalkanes by ferrioxalate-generated carboxylate radical preceding mineralization by the photo-fenton reaction