Treatment of textile effluent by chemical (Fenton's Reagent) and biological (sequencing batch reactor) oxidation

Rodrigues, Carmen S.D.; Madeira, Luís M.; Boaventura, Rui A.R.

doi:10.1016/j.jhazmat.2009.08.027

Cited by 95 publications

(40 citation statements)

References 23 publications

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“…Recalcitrant textile wastewater typically contains high concentrations of organic compounds [expressed as high chemical oxygen demand (COD)], colors associated with residual dyes, a wide range of pH, low biodegradability, and high salt content (Balcioglu and Arslan 1997, Lahkimi et al 2006, Schrank et al 2007, Hassan et al 2009, Rodrigues et al 2009, Blanco et al 2012, Hammami et al 2012, Punzi et al 2012. The characteristics of textile wastewater are depicted in Table 2.…”

Section: Characterization Of Textile Wastewatersmentioning

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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Section: Characterization Of Textile Wastewatersmentioning

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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“…Several authors have studied the degradation of pulp and paper wastewaters [18,19] and textile wastewaters [20][21][22].…”

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confidence: 99%

Using central composite experimental design to optimize the degradation of real dye wastewater by Fenton and photo-Fenton reactions

2014

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This work focuses in the use of Fenton reagent and UV-irradiation, in a lab-scale experiment, for the treatment of real dye wastewater coming from a Spanish textile manufacturer.Response surface methodology (RSM) and a 2 3 factorial design were used to evaluate the effects of the three independent variables considered for the optimization of the oxidative process: temperature, Fe (II) and H 2 O 2 concentrations, for a textile wastewater generated during a dyeing process with chemical oxygen demand (COD) of 1705 mg·L -1 O 2 at pH = 3. Wastewater degradation was followed in terms of COD decrease.In the optimization, the correlation coefficients for the model (R The combination of Fenton, Fenton-like and photon-Fenton reactions has been proved to be highly effective for the treatment of such a type of wastewaters, and several advantages for the technique application arise from the study. Under these conditions, 120 min of treatment resulted in a 62.9 % and 76.3 % decrease in COD after Fenton and photo-Fenton treatments respectively.

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“…These effluents run into water bodies and can cause severe problems if not being treated properly as they are toxic, mutagenic and carcinogenic to human life as well as prohibit the photosynthesis of aquatic life even as small quantities as 1 ppm [3,4]. To overcome this problems, several methods have been reported for the removal of such dyes including chemical and biological oxidation, adsorption, electrochemical oxidation, coagulation and flocculation, ion exchange, and membrane separation [5,6,[8][9][10]. However, those methods have their own limitations for example time-consuming, generation of secondary wastes, expensive, and commercially unattractive.…”

Section: -2506mentioning

confidence: 99%

PERFORMANCE OF EGZrO2-EGFe2O3/HY AS PHOTOCATALYST AND ITS EFFICACY IN DECOLORIZATION OF DYE-CONTAMINANTS

Sapawe¹

2016

MJAS

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The performance of electrogenerated metals supported on HY zeolite (EGZrO 2 -EGFe 2 O 3 /HY) was studied under sunlight irradiation for the decolorization of methylene blue (MB) and Congo red (CR) in aqueous solutions. The prepared photocatalysts were examined using X-ray diffraction (XRD), transmission electron microscopy (TEM), and Brunnauer-Emmett-Teller surface area analysis (BET). An amount of 0.375 g L −1 EGZrO 2 -EGFe 2 O 3 /HY was found to be the optimum dosage for 10 mg L −1 dyes, which gave almost complete photodecolorization of both MB and CR dye after 2 hours of contact time at pH 9 and pH 7, respectively. In addition, a control experiment was also conducted under similar conditions to confirm the efficacy of the prepared photocatalyst. The simple preparation of the photocatalyst and low amount of metal loading required, with simultaneously existence of synergistic effect from both metal oxides exhibits the great potential of the system that could be applied in textile or other industries wastewater treatment. Keywords: photocatalyst, dyes, decolorization, sunlight AbstrakKeupayaan logam elektrogenerasi disokong pada zeolit HY (EGZrO 2 -EGFe 2 O 3 /HY) telah dijalankan di bawah sinar matahari untuk penyahwarnaan metilena biru (MB) dan Congo merah (CR) dalam larutan akues. Fotomangkin telah dikaji menggunakan pembelauan sinar X-ray (XRD), mikroskopi elektron transmisi (TEM), dan analisis luas permukaan Brunnauer-Emmett-Teller (BET). Sejumlah 0.375 g L −1 EGZrO 2 -EGFe 2 O 3 /HY telah didapati sebagai dos optimum untuk 10 mg L −1 larutan pewarna, yang memberikan penyahwarnaan hampir lengkap bagi kedua-dua pewarna MB dan CR selepas 2 jam tindak balas pada pH 9 dan pH 7. Di samping itu, satu eksperimen kawalan juga telah dijalankan pada keadaan yang sama untuk mengesahkan keberkesanan fotomangkin yang disediakan. Penyediaan yang mudah untuk fotomangkin dan jumlah muatan logam sedikit yang diperlukan, pada masa yang sama dengan kewujudan kesan sinergi dari kedua-dua oksida logam mempamerkan potensi besar untuk sistem ini digunakan dalam industri tekstil atau industri rawatan air sisa yang lain.

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Treatment of textile effluent by chemical (Fenton's Reagent) and biological (sequencing batch reactor) oxidation

Cited by 95 publications

References 23 publications

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

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

Using central composite experimental design to optimize the degradation of real dye wastewater by Fenton and photo-Fenton reactions

PERFORMANCE OF EGZrO2-EGFe2O3/HY AS PHOTOCATALYST AND ITS EFFICACY IN DECOLORIZATION OF DYE-CONTAMINANTS

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