Acid dyebath effluent pretreatment using Fenton's reagent: Process optimization, reaction kinetics and effects on acute toxicity

Alaton, İdil Arslan; Teksoy, Senem

doi:10.1016/j.dyepig.2005.09.027

Cited by 85 publications

(31 citation statements)

References 42 publications

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“…The existence of an optimum H2O2 concentration was also observed by other authors (Azbar et al, 2004;Ramirez et al, 2005;Alaton and Teksoy, 2007;) and is explained by the fact that a parallel reaction between H2O2, in excess, with the hydroxyl radicals occurs, generating HO2  species with a lower oxidation potential (HO  + H2O2  H2O + HO2  ).…”

Section: Effect Of the Initial Hydrogen Peroxide Concentrationmentioning

confidence: 56%

“…Unfortunately, many of the chemicals and dyes used in textile dyeing are recalcitrant; they are often not biodegradable and eventually toxic (Anouzla et al, 2009). As such substances remain in the effluent they create negative impacts on the receiving water bodies, even when the wastewater is treated together with domestic effluents in WWTPs (Alaton, 2007).…”

Section: Introductionmentioning

confidence: 99%

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A new strategy for treating a cotton dyeing wastewater - integration of physical-chemical and advanced oxidation processes

Rodrigues

Boaventura

Madeira

2014

IJEWM

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New strategies were herein applied for treating a cotton dyeing wastewater: coagulation/flocculation followed by Fenton's oxidation -Approach 1, Fenton process per se -Approach 2, and Fenton followed by coagulation/flocculation -Approach 3, aiming reducing chemicals consumption. Regarding the cost analysis, which is crucial for deciding on the best strategy to implement, it was found that in Approach 1 and Approach 2 the hydrogen peroxide has a major influence on the total costs as compared to ferrous ion. In Approach 3, the total costs are again mostly related to the consumption of reagents in the oxidation stage. The integration of the Fenton's process followed by coagulation/flocculation provided an effluent that meets the discharge limits, with global organic matter removals of 55.6% for COD, 42.7% for BOD and 70.4% for DOC, and almost complete color reduction (99.6%). However, the combined treatment of coagulation/flocculation followed by Fenton's oxidation exhibits also high overall efficiencies (61.7%, 25.8% and 71.2% for COD, BOD5 and DOC removal, respectively, with almost complete decolorization) but simultaneously smaller operating costs associated with chemicals consumption (0.82 €/m 3 ), putting into evidence the usefulness of the novel strategy implemented: use of the residual dissolved iron employed as coagulant in the first stage as catalyst in the subsequent Fenton's oxidation.

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Section: Effect Of the Initial Hydrogen Peroxide Concentrationmentioning

confidence: 56%

Section: Introductionmentioning

confidence: 99%

A new strategy for treating a cotton dyeing wastewater - integration of physical-chemical and advanced oxidation processes

Rodrigues

Boaventura

Madeira

2014

IJEWM

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“…Transition metals have been used extensively as a homogenous catalyst in a wide range of industrial processes. Examples of AOPs that successfully use homogenous catalysts for pollution degradation include Fenton, photo-Fenton, and O 3 -based processes (Beltrán et al 2005, Alaton andTeksoy 2007 The …”

Section: Homogeneous Catalytic Oxidationmentioning

confidence: 99%

“…Based on the literature review, the parameters that highly affect AOPs include pH of the treatment system, type and initial concentration of catalysts and oxidants, temperature, presence of catalyst, retention time (RT), agitation speed, partial pressure of O 3 , light intensity, initial concentration of pollutant, matrix of pollutant, type of buffer used for pH adjustment, radiant flux, wavelength of irradiation, aeration, presence of ions species, reactor design and concentration of gas fed to the photoreactor (Ramirez et al 2007a,b, Alvárez' et al 2009). The effects of all the above parameters on efficiency of AOP systems have been widely investigated (Gogate and Pandit 2004a, Alaton and Teksoy 2007, Lin et al 2008, Bagal and Gogate 2014.…”

Section: Key Controlling Parameters For the Application Of Aop Technomentioning

confidence: 99%

Recent advances and prospects of catalytic advanced oxidation process in treating textile effluents

Buthiyappan

Raman

Daud

2016

Reviews in Chemical Engineering

243

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AbstractIn the past few years, there have been many researches on the use of different types of homogenous catalyst for the degradation of textile wastewater in conventional advanced oxidation processes (AOPs). However, homogenous AOPs suffer from few limitations, including large consumption of chemicals, acidic pH, high cost of hydrogen peroxide, generation of iron sludge, and necessity of post-treatment. Therefore, recently, there have been more researches that focus on improving the performance of conventional AOPs using heterogeneous catalysts such as titanium dioxide, nanomaterials, metal oxides, zeolite, hematite, goethite, magnetite, and activated carbon (AC). Besides, different supports such as AC that have been incorporated with transition metals and clays have been proven to have excellent catalytic activity in AOPs. This paper presents a comprehensive review of advances and prospects of catalytic AOPs for the decontamination of a wide range of synthetic and real textile wastewater. This review provides an up-to-date critical review of the information on the degradation of various textile dyes by a wide range of heterogeneous catalysts and adsorbents. The future challenges of AOPs, including chemical consumption, toxicity assessment, reactor design, and limitation of catalysts, are discussed in this paper. In addition, this paper also discusses the presence of ions, generation of by-products, and industrial applications of AOPs. Special emphasis is given to recent studies and large-scale combination of AOPs for wastewater treatment. This review paper concludes that more studies are needed for the kinetics, reactor design, and modeling of hybrid AOPs and the production of their corresponding intermediate products and secondary pollutants. A better economic model should also be developed to predict the cost of AOPs, as the treatment cost varies with dyes and textile effluents.

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“…Interestingly, improvement of the biodegradability of organic pollutants by Fenton's pre-oxidation has been explored by a few researchers. Alaton and Teksoy [8] studied the effectiveness of Fenton's reagent to pre-treat acid dye-bath effluents of a textile industry before conventional biological treatment. Biodegradation of a pharmaceutical wastewater was greatly improved by Fenton's treatment as reported by Tekin et al [9], because the breakdown of the organics into smaller fragments made the waste amenable to normal biological oxidation.…”

mentioning

confidence: 99%

Degradation of diethanolamine by Fenton's reagent combined with biological post-treatment

Dutta¹,

Harimurti²,

Ariff³

et al. 2010

Desalination and Water Treatment

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Abstract:Effectiveness of the Fenton's reagent for partial degradation of diethanolamine (DEA) prior to biological treatment is investigated. The effects of the major process parameters on the time evolution of COD, an indicator of the extent of degradation, were measured. The DEA concentration ranged from 800 to 16,000 ppm, in consideration of the COD of real effluents of natural gas processing plants. The initial reaction rate was a strong function of the feed amine concentration. About 70-80% of the ultimate COD removal could be achieved within three minutes. The pH of the medium was varied over 1-4; the best results were obtained at pH 3.The effectiveness of a hybrid scheme of advanced oxidation followed by biodegradation was explored. Activated sludge from a local wastewater treatment pond was used. Fast COD removal of the partially degraded DEA was achieved within a day. Biodegradation of pure DEA was much slower, apparently because of the acclimatization time of the microbes.

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Acid dyebath effluent pretreatment using Fenton's reagent: Process optimization, reaction kinetics and effects on acute toxicity

Cited by 85 publications

References 42 publications

A new strategy for treating a cotton dyeing wastewater - integration of physical-chemical and advanced oxidation processes

A new strategy for treating a cotton dyeing wastewater - integration of physical-chemical and advanced oxidation processes

Recent advances and prospects of catalytic advanced oxidation process in treating textile effluents

Degradation of diethanolamine by Fenton's reagent combined with biological post-treatment

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