Fenton treatment of complex industrial wastewater: Optimization of process conditions by surface response method

“…Se realizaron ensayos en un reactor operando tanto en batch como en semibatch, con la finalidad de estudiar las características principales de cada modo de operación en la degradación de un contaminante modelo como el fenol, para luego ser aplicados en el tratamiento de aguas residuales provenientes de los laboratorios de docencia de la Universidad de Caldas que presentan un rango de COT (carbono orgánico total) entre 40 y 250 mg/L, por lo cual se escogió una concentración de fenol de 100 ppm equivalente a un valor de COT de 76,6 mg/L, sustentada también con la respectiva revisión bibliográfica (Benatti, Tavares, and Guedes 2006;Bianco, De Michelis, and Vegliò 2011;Herney-Ramirez et al 2010;Melero et al 2009). …”

Section: Estudio De La Reacción Cwpounclassified

Estudio de la degradación de fenol sobre catalizador de arcilla pilarizada-Study of the degradation of phenol on pillar clay catalyst

Cardona-Castaño

Taborda-Ocampo

2016

Rev. Cient.

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Se investiga la oxidación de fenol sobre catalizador de arcilla pilarizada en un reactor operando tanto en batch como en semibatch. Los experimentos fueron llevados a cabo a temperatura ambiente y presión atmosférica, con concentración de fenol de 100 mg/L, concentración de catalizador de 0,5 y 2,75 g/L y concentración de peróxido de hidrógeno del 50 y el 100 % de la cantidad estequiométrica necesaria para la total degradación de fenol. Se comparan ambos procesos en términos de degradación de fenol, degradación de H2O2, formación y degradación de intermediarios aromáticos y ácidos de cadena corta. Se determinó, que la velocidad de degradación de fenol e intermediarios aromáticos es más lenta en el proceso en semibatch. Sin embargo, hay un uso más eficiente del peróxido de hidrógeno en el proceso semibatch, favoreciendo la reacción con las especies orgánicas y reduciendo las reacciones competitivas.

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“…It is able to oxide organic compounds into carbon dioxide, water, and organic acid. Advanced Oxidation Processes include Fenton Process, Photocatalystic, Electrochemical, and Ultrasonic Methods (6)(7)(8). The methods of advanced oxidation are based on production of hydroxyl radical (HO`) in the medium.…”

Section: Introductionmentioning

confidence: 99%

Comparing Fenton Oxidation with Conventional Coagulation Process for RR198 Dye Removal from Aqueous Solutions

Esrafili

Yengejeh

2017

Iran J Health Sci

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Background and purpose: The wastewater discharged from textile industries is one of the main environmental pollutants that causes many problems for the environment if it is not treated or discharged. The present study compared Fenton oxidation process with coagulation and flocculation using the natural coagulant of Sodium Alginate in order to remove Reactive Red 198 Dye. Materials and methods: This study was carried out in an experimental scale, in which the effects of pH, concentration of the dyeing substance, concentration of iron sulfate and hydrogen peroxide for the oxidation of Fenton and the effects of pH, concentration of coagulant, concentration of dyeing substance, and the Coagulant Aid of Sodium Alginate were all investigated. Results:The results of the current study indicated that in the Fenton process, the efficiency of RR 198 Dye removal under acidic conditions (pH=3) at optimal conditions was achieved to be 96.2% for the dye with the concentration of 20 mg/l. By using 70 mg/l of the coagulant of Poly-Aluminum Chloride in coagulation and flocculation process, 71.2% of the dye removal was obtained for the initial concentration of the dye as 20 mg/l. Also, by adding 50 mg/l of Sodium Alginate to the optimal concentration of Poly-Aluminum Chloride, the dye removal increased up to 92.1%. Conclusion: Although under optimal conditions, the efficiency of coagulation process with coagulant aid was only 4% less than the efficiency of Fenton process, considering the advantages of Fenton oxidation including lack of production of excessive sludge, a higher efficiency was gained at large doses of dye.

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Fenton treatment of complex industrial wastewater: Optimization of process conditions by surface response method

Cited by 137 publications

References 43 publications

Fenton´s Process for the Treatment of Mixed Waste Chemicals

Fenton´s Process for the Treatment of Mixed Waste Chemicals

Estudio de la degradación de fenol sobre catalizador de arcilla pilarizada-Study of the degradation of phenol on pillar clay catalyst

Comparing Fenton Oxidation with Conventional Coagulation Process for RR198 Dye Removal from Aqueous Solutions

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