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Application of Fenton's Reagent in the Textile Wastewater Treatment Under Industrial Conditions

Application of reactive dyes is very popular in textile industry as these dyestuffs are characterized by good fastness properties. Constapel et al in 2009 estimated the production of this type of dyes for over 140,000 Mg/year. The reactive dyes are mostly (50%) employed for coloration of cellulosic fibers, however they can also be applied on wool and nylon. Unfortunately, they possess a low degree of fixation (50÷90%), since the functional groups also bond to water, creating hydrolysis and the excess of dyes applied cause a colored pollution of aqueous environment. Moreover, dyeing process requires the use of: electrolytes in the form of aqueous solutions of NaCl or Na2SO4 in the concentration up to 100 g/dm3, alkaline environment (pH > 10) and textile auxiliary agents (including detergents). Therefore, the wastewater generated during the reactive dyeing processes is characterized by high salinity, pH value and color, and due to low value of the BOD5/COD ratio are nonbiodegradable. The successful methods of textile wastewater treatment could be Advanced Oxidation Processes (AOPs), amongst which the Fenton reagent seems to be most promising as it is the cheapest and easy in use. Based on the newest literature survey it was found that many successful tests with Fenton reaction were performed mainly in decolorization. However, not enough attention was devoted to decolorization of real industrial wastewater containing dyes, detergents and salts NaCl, or Na2SO4. The experiments carried out in a laboratory scale were focused on the impact of NaCl and textile auxiliary agent (liquid dispersing and sequestering agent) on an inhibition of decolorization process by Fenton's reagent. The objects of the investigation were synthetic mixtures simulating the composition of real textile wastewater as well as the real industrial wastewater generated in the reactive dyeing. The inhibition of the Fenton decolorization in the presence of NaCl and liquid dispersing and sequestering agent was demonstrated. Additional experiments using pulse radiolysis were carried out in order to confirm the inhibition of chloride in the decolorization process.


Treatment of leachate from an exploited since 2004 landfill by using two methods of advanced oxidation processes was performed. Fenton’s reagent with two different doses of hydrogen peroxide and iron and UV/H2O2 process was applied. The removal efficiency of biochemically oxidizable organic compounds (BOD5), chemically oxidizable compounds using potassium dichromate (CODCr) and nutrient (nitrogen and phosphorus) was examined. Studies have shown that the greatest degree of organic compounds removal expressed as a BOD5 index and CODCr index were obtained when Fenton’s reagent with greater dose of hydrogen peroxide was used - efficiency was respectively 72.0% and 69.8%. Moreover, in this case there was observed an increase in the value of ratio of BOD5/CODCr in treated leachate in comparison with raw leachate. Application of Fenton’s reagent for leachate treatment also allowed for more effective removal of nutrients in comparison with the UV/H2O2 process.

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References [1] Arslan-Alaton, I., Gursoy, B.H., & Schmidt, J-E. (2008). Advanced oxidation of acid and reactive dyes: Effect of Fenton treatment on aerobic, anoxic and anaerobic processes, Dyes and Pigments, 78 , 117-130. [2] Chamarro, E., Marco, A., & Esplugas, S. (2001). Use of Fenton Reagent to improve organic chemical biodegradability, Water Research, 35, 4, 1047-1051. [3] Dębowski, M., Zieliński, M., Dudek M., & Grala, A. (2012). Application of Fenton Reagent in the process of formaldehyde removal from the timber industry wastewater, Annual Set The

, Gliwice. (in Polish) Barbusiński, K. & Majewski, M. (2003). Discoloration of azo dye Acid Red 18 by Fenton reagent in the presence of iron powder, Polish Journal of Environmental Studies, 12, 2, pp. 151-155. Barbusiński, K. (2006). Modifi cation of the Fenton reaction using calcium and magnesium peroxides, Wydawnictwo GIG, Katowice 2006. (in Polish) Barbusinski, K. & Fajkis, S. (2011). Optimization of the Fenton oxidation of wastewater generated by rape oil soapstock splitting, Environmental Progress & Sustainable Energy, 30, 4, pp. 620-631. Cao, X., Lou, H., Wei, W

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Characteristics to The Train Station. Engineering Heritage Journal, 2017, 1(2): 01-04. 14. Yang S, Li J, Song Y, Application of surfactant Tween 80 to enhance Fenton oxidation of polycyclic aromatic hydrocarbons (PAHs) in soil pre-treated with Fenton reagents. Geology, Ecology, and Landscapes, 2017, 1(3): 197-204. 15. Bahmani M, Noorzad A, Hamedi J, Sali F, The role of bacillus pasteurii on the change of parameters of sands according to temperaturcompresion and wind erosion resistance. Journal CleanWAS, 2017, 1(2): 1-5. 16. Tunggolou J, Payus C, Moringa Oleifera As Coagulant

, secretion and resistance in obese type 2 diabetics on Metformin. Clinica Chimica Acta. 2004;346(2):145-152. Lombardo YB, Chicco AG. Effects of dietary polyunsaturated n-3 fatty acids on dyslipidemia and insulin resistance in rodents and humans. J Nutritional Biochemistry. 2006;17:1-13. Liu S, Baracos VE, Quinney HA, Clandinin T. Dietary Omega-3 and polyunsaturated fatty acids modify fatty acyl composition and insulin binding in skeletal muscle sarcolemma. Biochem J. 1994;299:831-837. Sadrazadeh SM, Graf E, Panter SS, Hallaway PE, Eaten JW. Hemoglobin, a biologic Fenton