Effects of operating parameters on advanced oxidation of diuron by the Fenton’s reagent: A statistical design approach

Çatalkaya, Ebru Çokay; Kargı, Fikret

doi:10.1016/j.chemosphere.2007.04.033

Cited by 71 publications

(51 citation statements)

References 23 publications

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“…Catalkaya and Kargi (2007) reported that the degradation of diuron using Fenton reagent proceeds in a sequential way with the formation of aniline and 3,4-dichloroaniline as major intermediates. In another study conducted by Masomboon et al (2010) degradation of 2,6-dimethylaniline by Fenton's reagent resulted in formation of several stable intermediates, viz, 2,6-dimethylphenol, 2,6-dimethylnitrobenzene, 2,6-dimethylbenzoquinone, 3-hexanone, lactic acid, oxalic acid, acetic acid, maleic acid and formic acid.…”

Section: Gc-ms Analysis Of Degradation Products Formed From Endosulfamentioning

confidence: 99%

“…The hydroxyl radical species with a redox potential of 2.8 V react strongly with most organic substances by hydrogen abstraction or electrophilic addition to double bonds. Free radicals further react with molecular oxygen to give a peroxyl radical, initiating a sequence of oxidative degradation reactions which may lead to complete mineralization of the contaminant (Chiro et al 1999;Catalkaya and Kargi 2007). Among the well-known AOPs, Fenton's reagent is the most widely used and studied catalytic process based on the electron transfer between hydrogen peroxide (H 2 O 2 ) and a metal acting as a homogeneous catalyst for the treatment of both organic and inorganic substances (Chiro et al 1999).…”

Section: Introductionmentioning

confidence: 99%

“…AOPs are defined as processes based on generation of highly reactive intermediates that initiate a sequence of reactions resulting in destruction and removal of organic pollutants at ambient temperatures (Chiro et al 1999;Catalkaya and Kargi 2007). All AOPs are based mainly on hydroxyl radical (OH) chemistry.…”

Section: Introductionmentioning

confidence: 99%

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Degradation of endosulfan and lindane using Fenton’s reagent

et al. 2014

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Advanced oxidation of endosulfan and lindane was investigated using Fenton's reagent (FeSO 4 /H 2 O 2 ) in aqueous phase. A pH of 3 was chosen as optimum with the degradation efficiency of 83 % for endosulfan and 92 % for lindane. FeSO 4 dose of 50 and 20 mg ml -1 was found to be optimum for endosulfan and lindane, respectively, with the degradation efficiency of *83 % at pH 3. Further addition of FeSO 4 remained unutilized and contributed to the dissolved solid content. FeSO 4 :H 2 O 2 (w/w) ratio of 1:4.7 and 1:7 was optimized for endosulfan and lindane, respectively. First-order reaction kinetics (5, 7.5 and 10 ppm) were observed for both endosulfan and lindane degradations. Calculated rate constant values (k obs ') for initial endosulfan concentration of 5, 7.5 and 10 ppm were 0.021, 0.133, 0.046 min -1 , respectively. While rate constant values (k obs ') of 0.057, 0.035 and 0.034 min -1 were observed for kinetics performed with 5, 7.5 and 10 ppm initial lindane concentrations, respectively. GC-MS analysis revealed that degradation process for endosulfan was sequential with the formation of methyl cyclohexane followed by 1-hexene. While lindane degradation process was spontaneous with the formation of 1-hexene formed by benzene ring fission.

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Section: Gc-ms Analysis Of Degradation Products Formed From Endosulfamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Degradation of endosulfan and lindane using Fenton’s reagent

et al. 2014

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“…Due to the high oxidation potential of OH, Fenton's reagent has been commonly applied either as a pretreatment process to increase wastewater biodegradability or as a polishing process to further remove recalcitrant pollutants escaping from the foregoing biological unit (Zazo et al, 2005;Catalkaya and Kargi, 2007). The effectiveness of Fenton's reagent, assisted with UV radiation, on decomposing antibiotics such as tetracycline and sulfamethoxazole in distilled water has been investigated in recent years (Bautitz and Nogueira, 2007;Gonzá lez et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Removal of veterinary antibiotics from sequencing batch reactor (SBR) pretreated swine wastewater by Fenton's reagent

et al. 2009

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Besides, Fenton's reagent helped to not only remove total organic carbon (TOC), heavy metals (As, Cu and Pb) and total phosphorus (TP), but also inactivate bacteria and reduce wastewater toxicity. This work demonstrates that the integrated process combining SBR with Fenton's reagent could provide comprehensive treatment to swine wastewater. ª 2009 Elsevier Ltd. All rights reserved. IntroductionThe concern about the occurrence of antibiotics in the environment has been growing due to the potential evolution of antibiotic resistant bacteria. Antibiotics are widely used in concentrated animal feeding operations (CAFOs) around the world to treat the diseases and improve the growth rate of animals. In China, over 8000 tons of antibiotics are currently used as feed additives each year (Henan Animal Husbandry Bureau, 2009). Antibiotics are often added in the feed and water for animal feeding. However, the majority of antibiotics are excreted in feces and urine without adsorption and metabolism by animals (Sarmah et al., 2006). As a result, the potential environmental risks brought about by antibiotics are increasing along with the rapid advance of livestock industry. In fact, antibiotics have been frequently detected in the slurry and wastewater of CAFOs (Haller et al., 2002;Malintan and Mohd, 2006). Multiple classes of antibiotics with relatively high concentrations, commonly at >100 mg/L levels, were detected in swine waste storage lagoons in the United States (Campagnolo et al., 2002). In our previous work, eight antibiotics including four sulfonamides, three tetracyclines and one * Corresponding author. Tel.: þ86 10 62849632; fax: þ86 10 62923541. E-mail address: qiangz@rcees.ac.cn (Z. Qiang).A v a i l a b l e a t w w w . s c i e n c e d i r e c t . w a t e r r e s e a r c h 4 3 ( 2 0 0 9 ) 4 3 9 2 -4 4 0 2

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“…Optimal H2O2/Fe 2+ /diuron ratio during the Fenton process was assessed to remove diuron at mg L −1 and an efficiency of 98.5% was achieved (Catalkaya and Kargi, 2007). The kinetic rate constants and extent of chloride generation resulting from penta-chlorophenol (50 mg L −1 ) degradation by heterogeneous Fenton were determined in the presence of different chelating agents, following an order that did not correlate with the Fe-chelating ability: oxalate N EDTA N CMCD N citrate N tartrate N succinate N without chelating agent (Xue et al, 2009).…”

Section: Classical Fenton Processmentioning

confidence: 99%

An overview on the advanced oxidation processes applied for the treatment of water pollutants defined in the recently launched Directive 2013/39/EU

Ribeiro

Nunes

Pereira

et al. 2015

Environment International

854

319

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Environmental pollution is a recognized issue of major concern since a wide range of contaminants has been found in aquatic environment at ng L −1 to μg L −1 levels.In the year 2000, a strategy was defined to identify the priority substances concerning aquatic ecosystems, followed by the definition of environmental quality standards (EQS) in 2008. Recently it was launched the Directive 2013/39/EU that updates the water framework policy highlighting the need to develop new water treatment technologies to deal with such problem. This review summarizes the data published in the last decade regarding the application of advanced oxidation processes (AOPs) to treat priority compounds and certain other pollutants defined in this Directive, excluding the inorganic species (cadmium, lead, mercury, nickel and their derivatives).The Directive 2013/39/EU includes several pesticides

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Effects of operating parameters on advanced oxidation of diuron by the Fenton’s reagent: A statistical design approach

Cited by 71 publications

References 23 publications

Degradation of endosulfan and lindane using Fenton’s reagent

Degradation of endosulfan and lindane using Fenton’s reagent

Removal of veterinary antibiotics from sequencing batch reactor (SBR) pretreated swine wastewater by Fenton's reagent

An overview on the advanced oxidation processes applied for the treatment of water pollutants defined in the recently launched Directive 2013/39/EU

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