The Photo-Fenton method — Degradation of nitrogen containing organic compounds

Maletzky, P.; Bauer, R.

doi:10.1016/s0045-6535(98)00093-9

Cited by 72 publications

(30 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The chemical oxygen demand measurements have shown in this study that the reaction follows an evolution by way of a total mineralization. It is also to be mentioned that final degradation products were mineral ions such as NH 4 + , NO 3 , and SO 4 2 according to the substituent groups included in the initial molecule, as well as CO 2 and H 2 O (Maletzky and Bauer 1998;Tanaka et al 2000;Joseph et al 2000).…”

Section: Mineralization Reaction Pathwaymentioning

confidence: 99%

Degradation of azo dyes in water by Electro-Fenton process

Guivarch

Trevin

Lahitte

et al. 2003

Environmental Chemistry Letters

255

112

View full text Add to dashboard Cite

The degradation of the azo dyes azobenzene, pmethyl red and methyl orange in aqueous solution at room temperature has been studied by an advanced electrochemical oxidation process (AEOPs) under potentialcontrolled electrolysis conditions, using a Pt anode and a carbon felt cathode. The electrochemical production of Fenton's reagent (H 2 O 2 , Fe 2+ ) allows a controlled in situ generation of hydroxyl radicals ( · OH) by simultaneous reduction of dioxygen and ferrous ions on the carbon felt electrode. In turn, hydroxyl radicals react with azo dyes, thus leading to their mineralization into CO 2 and H 2 O. The chemical composition of the azo dyes and their degradation products during electrolysis were monitored by high performance liquid chromatography (HPLC). The following degradation products were identified: hydroquinone, 1,4-benzoquinone, pyrocatechol, 4-nitrocatechol, 1,3,5-trihydroxynitrobenzene and p-nitrophenol. Degradation of the initial azo dyes was assessed by the measurement of the chemical oxygen demand (COD). Kinetic analysis of these data showed a pseudo-first order degradation reaction for all azo dyes. A pathway of degradation of azo dyes is proposed. Specifically, the degradation of dyes and intermediates proceeds by oxidation of azo bonds and aromatic ring by hydroxyl radicals. The results display the efficiency of the ElectroFenton process to degrade organic matter.

show abstract

Section: Mineralization Reaction Pathwaymentioning

confidence: 99%

Degradation of azo dyes in water by Electro-Fenton process

Guivarch

Trevin

Lahitte

et al. 2003

Environmental Chemistry Letters

255

112

View full text Add to dashboard Cite

show abstract

“…They usually contain complex structure compounds such as aromatic rings or azo bond that may cause harmful and irreversible environmental problems even at quite low concentrations [2,3]. A large portion of papers have been devoted to the degradation of nitrogen-containing organic compounds based on physical and biological methods [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Utilization of single-chamber microbial fuel cells as renewable power sources for electrochemical degradation of nitrogen-containing organic compounds

Wang

Zhang

Borthwick

et al. 2015

Chemical Engineering Journal

View full text Add to dashboard Cite

h i g h l i g h t sSingle-chamber microbial fuel cells (MFCs) are acted as renewable power sources. Enhanced degradation of nitrogen-containing organic compounds is realized. Higher applied voltage, lower initial concentration and pH improve the performance. Indirect electrochemical oxidation with generated H 2 O 2 is the main effect. a b s t r a c tBy employing promising single-chamber microbial fuel cells (MFCs) as renewable power sources, an aerated electrochemical system is proposed and for nitrogen-containing organic compounds (pyridine and methyl orange) removals. Carbon felt performed the best as electrode material while lower initial contaminant concentration and lower initial pH value could improve the performance. A degradation efficiency of 82.9% for pyridine was achieved after 360 min electrolysis with its initial concentration of 200 mg/L, initial pH of 3.0 and applied voltage of 700 mV. Mechanisms study implied that indirect electrochemical oxidation by generated hydrogen peroxide was responsible for their degradation. This study provides an alternative utilization form of low bioelectricity from MFCs and reveals that applying it to electrochemical process is highly-efficient as well as cost-effective for degradation of nitrogen-containing organic compounds.

show abstract

“…They show how the pH, Fe con-* p,p character. centration, wavelength and energy of irradiation source, The use of the photo-Fenton method for degradation of and the nature of the organic compounds influence the nitrogen-containing compounds was studied [283]. Arophotodegradation processes.…”

mentioning

confidence: 99%

Reaction pathways and mechanisms of photodegradation of pesticides

Burrows

Santaballa

Steenken

2002

Journal of Photochemistry and Photobiology B: Biology

567

286

View full text Add to dashboard Cite

The photodegradation of pesticides is reviewed, with particular reference to the studies that describe the mechanisms of the processes involved, the nature of reactive intermediates and final products. Potential use of photochemical processes in advanced oxidation methods for water treatment is also discussed. Processes considered include direct photolysis leading to homolysis or heterolysis of the pesticide, photosensitized photodegradation by singlet oxygen and a variety of metal complexes, photolysis in heterogeneous media and degradation by reaction with intermediates generated by photolytic or radiolytic means.

show abstract

The Photo-Fenton method — Degradation of nitrogen containing organic compounds

Cited by 72 publications

References 16 publications

Degradation of azo dyes in water by Electro-Fenton process

Degradation of azo dyes in water by Electro-Fenton process

Utilization of single-chamber microbial fuel cells as renewable power sources for electrochemical degradation of nitrogen-containing organic compounds

Reaction pathways and mechanisms of photodegradation of pesticides

Contact Info

Product

Resources

About