Fenton-like oxidation

Watts, R.J., Jones, A.P, Chen, P, and Kenny, A., Mineral catalyzed Fenton-like oxidation of sorbed chlorobenzenes, Water Res., 69(3), 269-275, 1997. 

Mixed element oxides such as Fe Si O, Fe Mg O, and Fe Mg Si-O complex oxides have also been used as catalysts for Fenton-like oxidations [58], Some of these catalysts exhibited selectivity for phenol hydroxylation. Whereas these catalysts are unlikely to be useful for in situ applications, they may be valuable for waste stream treatment, especially when a well-defined waste stream with specific pollutants exists. 

Kakarla PKC, Watts RJ. Depth of Fenton-like oxidation in remediation of surface soil. J Environ Eng 1997 123 11-17. 

Greenberg, R. S. Andrews, T. Kakarla, P. K. C. Watts, R. J. In-Situ Fenton-Like Oxidation of Volatile Organics Laboratory, Pilot, and Full-Scale Demonstrations, Remediation 1998, 8, 29-42. 

Reddy and Karri (2008b) also reported research investigating Fenton-like oxidation coupled with EK remediation of low-permeabiUty soils contaminated with both heavy metals and PAHs. That study examined the simultaneous oxidation of organic contaminants and removal of heavy metals. Kaolin spiked with nickel and phenanthrene each at a concentration of 500mg/kg of dry soil to represent typical heavy metal and PAH contaminants found at contaminated sites. Four-week lab-scale EK... 

Greenberg RS, Andrews T, Kakarla PKC, Watts RJ. (1998). In-situ Fenton-like oxidation of volatile organics laboratory, pilot, and full-scale demonstration. Remediation 8(2) 29 2. 

B. Kiril Mert, T. Yonar, M. Yalili Kilie, K. Kestioglu, Pretreatment studies on olive oil mill effluent using physicochemical, Fenton and Fenton-like oxidations processes. Journal of Hazardous Materials 2010, 174, 122-128. 

Perovskites with the general elemental composition of ABO3, where B is Fe, also attracted the attention because of their application as catalysts in liquid-phase oxidation reactions. They revealed high catalytic activities in heterogeneous Fenton-like oxidation at neutral conditions [46,47,55,56]. BiFeOs and... 

Oxidation of thiophene with Fenton-like reagents produces 2-hydroxythiophene of which the 2(570 One isomer is the most stable (Eq. 1) <96JCR(S)242>. In contrast, methyltrioxorhenium (Vn) catalyzed hydrogen peroxide oxidation of thiophene and its derivatives forms first the sulfoxide and ultimately the sulfone derivatives <96107211>. Anodic oxidation of aminated dibenzothiophene produces stable radical cation salts <96BSF597>. Reduction of dihalothiophene at carbon cathodes produces the first example of an electrochemical halogen dance reaction (Eq. 2) <96JOC8074>. 

A similar HPICE method was employed for the study of the oxidation of Reactive yellow 84 and Reactive red 120 by the photo-Fenton and Fenton-like processes [133], Photocatalytic degradation has been frequently investigated by various HPLC techniques. Thus, the photodegradation of ethyl violet has been recently studied in detail [134],... 

M. Neamtu, A. Yediler, I. Siminiceanu and A. Kettrup, Oxidation of commercial reactive azo dye aqueous solutions by the photo-Fenton and Fenton-like processes. J.Photochem. Photobiol.A Chem., 161 (2003) 87-93. 

Oxidative functionalization of aliphatic and aromatic hydrocarbons is a somewhat difficult chemical transformation, in particular when a suitable degree of chemoselectivity is required. Until the last decades of the last century, metal-catalyzed functionalization of hydrocarbons with peroxides were basically limited to Fenton and Fenton-like systems ". 

A reduction and activation of HjOj by other one-electron donors, like semiquinones, has also to be considered. This follows from a study of the ethylene production from methionine in the presence of pyridoxal phosphate, a reaction characteristic for OH radicals or for Fenton-type oxidants. The ethylene production in the presence of dioxygen, anthraquinone-2-sulfonate, and an NADPH-generating system in phosphate buffer pH 7.6 was inhibited by SOD and by catalase, but stimulated by scavengers of OH radicals, like 0.1 mM mannitol, a-tocopherol, and formiate... 

The reaction of hydrogen peroxide with copper(I) salts produces a Fenton-like hydroxylating system involving reactive hydroxyl radical intermediates (equation 265).486,491 Hydroxylation of benzene to phenol can be achieved by air in the presence of copper(I) salts in an acidic aqueous solution.592 593 This reaction is not catalytic (phenol yields are ca. 8% based on copper(I) salts) and stops when all copper(I) has been oxidized to copper(II). A catalytic transformation of benzene to phenol can occur when copper(II) is electrolytically reduced to copper(I) (equation 266).594,595... 

Nitrophenols are persistent pollutants and commonly found in industrial wastewaters. Degradation of nitrophenols to less dangerous materials or mineralization is difficult by natural process involving biodegradation or oxidation. Nitrophenols are commonly found in degradation of pesticides such as parathion and nitrofen. Kiwi et al. (1994) showed efficient photo-and dark oxidation via Fenton-like reactions on 2 and 4-nitrophenols. Photolysis of acidic solutions of H2Oz give OH radicals as primary photoproducts (Baxendale and Wilson, 1957) as follows ... 

Martini M, Termini J (1997) Peroxy radical oxidation of thymidine. Chem Res Toxicol 10 234-241 Masarwa M, Cohen H, Meyerstein D, Hickman DL, Bakac A, Espenson JH (1988) Reaction of low-va-lent transition-metal complexes with hydrogen peroxide. Are they,Fenton-like or not 1. The case of Cu+aq and Cr2+aq. J Am Chem Soc 110 4293-4297 Maskos Z, Koppenol WH (1991) Oxyradicals and multivitamin tablets. Free Rad Biol Med 11 609-610... 

Ensing B, Buda F, Baerends EJ (2003) Fenton-like chemistry in water oxidation catalysis by Fe(lll) and... 

CuZn-SOD is inactivated by H2O2 through the following mechanism H2O2 first reduces the enzyme-Cu2+ to the Cu+ form (reaction 10.15), then the enzyme-Cu+ reacts with H2O2 to form a strong oxidant at the active site by a Fenton-like reaction (reaction 10.16). The oxidant destroys the Cu-ligated His-63.84 ... 

Kwan, W. P. Voelker, B. M. Rates of Hydroxyl Radical Generation and Organic Compound Oxidation in Mineral-Catalyzed Fenton-like Systems, Environ. Sci. Technol. 2003, 37, 1150-1158. 

---