Fenton process for the combined removal of iron and organic micropollutants in groundwater treatment

Ijpelaar, G.F.; Groenendijk, M.; Kruithof, Joop C.; Schippers, Jan C.

doi:10.2166/ws.2002.0068

Cited by 7 publications

(5 citation statements)

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“…In acid medium, the oxidizing power of electrogenerated H 2 O 2 can be enhanced by addition of Fe 2ϩ to the treated solution. Hydroxyl radical (OH • ) and Fe 3ϩ species are then generated from the classical Fenton's reaction between Fe 2ϩ and hydrogen peroxide [17][18][19] Fe 2ϩ ϩ H 2 O 2 → Fe͑OH) 2ϩ ϩ OH • ͓2͔…”

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confidence: 99%

“…Recently, the efficient mineralization of chlorophenoxy herbicides in an aqueous medium using some advanced oxidation processes ͑AOPs͒ has been reported. They can be degraded by the action of OH • produced from chemical, photochemical, and photocatalytic systems such as H 2 O 2 /Fe 2ϩ , [17][18][19] H 2 O 2 /Fe 3ϩ /UV, 14,17,18,33 35 TiO 2 /UV, 36,37 TiO 2 /UV/O 3 , 38 and Fe 2ϩ /UV/O 3 . 38 The oxidative ability of EFR, electro-Fenton, and photoelectro-Fenton methods to destroy several chlorophenoxy herbicides has also been tested.…”

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confidence: 99%

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General and UV-Assisted Cathodic Fenton Treatments for the Mineralization of Herbicide MCPA

Brillas

Boye

Dieng

2003

J. Electrochem. Soc.

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The mineralization of aqueous solutions of the herbicide 4-chloro-2-methylphenoxyacetic acid ͑MCPA͒ in 0.05 M Na 2 SO 4 with adjusted pH 2.0-6.0 using H 2 SO 4 has been studied by an UV-assisted cathodic Fenton treatment such as photoelectro-Fenton at low current and at 35°C, using an undivided cell with a Pt anode and an O 2 -diffusion cathode. This method allows the complete depollution of solutions of pH 3.0 with an herbicide concentration of up to 380 mg L Ϫ1 and 1 mM Fe 2ϩ . This is feasible by the high concentration of oxidizing hydroxyl radicals produced in the medium by the Fenton's reaction between added Fe 2ϩ and H 2 O 2 electrogenerated by the cathode, along with photolysis of some products. Comparative treatment by a general cathodic Fenton method such as electro-Fenton only yields 70-75% of mineralization due to the formation of hardly oxidizable products. MCPA is much more slowly degraded by anodic oxidation in the absence and presence of electrogenerated H 2 O 2 . The herbicide decay always follows a pseudo first-order reaction. Aromatic products such as 4-chloro-o-cresol, methylhydroquinone, and methyl-pbenzoquinone have been followed by reverse-phase chromatography. Chloride ions are formed from oxidation of chlorinated products. Generated carboxylic acids such as glycolic, glyoxylic, formic, malic, maleic, fumaric, and oxalic, have been detected by ion-exclusion chromatography. These products are destroyed by electro-Fenton, except oxalic acid that forms stable complexes with Fe 3ϩ . The efficient photodecarboxylation of such complexes by UV light explains the complete mineralization of MCPA by photoelectro-Fenton.

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confidence: 99%

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confidence: 99%

General and UV-Assisted Cathodic Fenton Treatments for the Mineralization of Herbicide MCPA

Brillas

Boye

Dieng

2003

J. Electrochem. Soc.

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“…Also, to enable an optimal production of radicals by reaction between Fe 2+ and H 2 O 2 , the presence of oxygen should be prevented in order to prevent formation of iron hydr-oxides, which take away the iron from the catalytic cycle. Thus, anaerobic water conditions are required (Ijpelaar et al, 2001).…”

Section: Chemical Remediation Using Fenton Reagent Effect Of Ferrous mentioning

confidence: 99%

Fenton Oxidation and Fungal Remediation of Different Pollutants from Kitchener Drain, Egypt.

Gebreil

El-Alfy

El‐Amier

et al. 2018

Egypt. J. of Aquatic Biolo. and Fish.

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Wastewater from Kitchener drain cause many effects not only on the surrounding environment but when being discharged into the Mediterranean Sea water. Using different remediation processes for heavy metals removal has important role in purification of different types of wastewaters aid in recycling process. This work is aimed to use Fenton as chemical remediation process for reduction of organic pollutants and to screen the efficiency of the fungal isolates in heavy metal removal process by generation of an immobilized fungal consortium. Parameters affecting the Fenton process as pH, dosages of Fenton reagents and temperature were taken into considerations in this research. Results showed that the optimum conditions to have high removal of organic matter from wastewater sample at the experiment were at FeSO 4 (0.4 gm), hydrogen peroxide H 2 O 2 (15%), at acidic medium (pH = 2) and temperature of about 40°C. It showed high removal of chemical oxygen demand COD concentration from sample with 80 to 95% removal. On the other experiment, a mixture of fungal spores was used to remove Chromium, Cadmium and Nickel ions in batch modes. In this mode, the immobilized biomass was enclosed in a hanged tea bag-like cellulose membrane to facilitate the separation of the biosorbent from the treated solutions, which is one of the main challenges in applying microbial biosorption at large scale. The chemical remediation approved the potentiality to reduce nonbiodegradable components which can't be consumed by bio-remediates i.e. fungi and bacteria. Where, all the obtained biosorbent isolates showed more significant efficiency in heavy metal removal. The most potential biosorbent fungi were identified and characterized. Finally, these remediation methods can be applied for removal of different pollutants from wastewaters.

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“…Good removal of DBPs like THMs (Tang and Tassos, 1997) was achieved, as well as removal of precursor species which can be problematic with respect to THM formation potential (THMFP) Parsons, 2004b, Kleiser andFrimmel, 2000). Fenton's process is a promising method for pesticide control in groundwater and surface water (Ijpelaar et al, 2002a, Ijpelaar et al, 2002b. Phenols can be completely removed by the Fenton's process (Kavitha and Palanivelu, 2004).…”

Section: Introductionmentioning

confidence: 99%

Removal of natural organic matter from groundwater using fenton’s process

2013

Global NEST Journal

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Groundwater in the area of eastern Croatia contains increased concentrations of organic compounds, primarily natural organic matter (NOM). Organic compounds in water become a problem in drinking water treatment, especially during water disinfection with chlorine, when harmful disinfection by-products like trihalomethanes appear. Therefore, the removal of disinfection byproducts (DBP) precursors gains high importance. This paper deals with the efficiency of NOM removal from groundwater by the Fenton's process and its influence on trihalomethane formation potential (THMFP). In this research performance of Fenton process at conditions close to conditions of natural groundwater was investigated. pH value was not decreased under 4.5 and attempt was done to perform Fenton's process at natural iron concentration in groundwater of town Osijek area. Once optimized, process achieved about 50 % removal of TOC (2.

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Fenton process for the combined removal of iron and organic micropollutants in groundwater treatment

Cited by 7 publications

References 0 publications

General and UV-Assisted Cathodic Fenton Treatments for the Mineralization of Herbicide MCPA

General and UV-Assisted Cathodic Fenton Treatments for the Mineralization of Herbicide MCPA

Fenton Oxidation and Fungal Remediation of Different Pollutants from Kitchener Drain, Egypt.

Removal of natural organic matter from groundwater using fenton’s process

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