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Degradation of direct yellow 9 by electro-Fenton: process study and optimization and, monitoring of treated water toxicity using catalase.
Kourdali, Sidali; Badis, Abdelmalek; Boucherit, Ahmed.
Afiliación
  • Kourdali S; Department of Industrial Chemistry, Faculty of Technology, University of Saàd Dahlab at Blida, PO Box 270, 09000 Blida, Algeria; Laboratory of Natural Substances Chemistry and Biomolecules, University of Saàd Dahlab at Blida, PO Box 270, 09000 Blida, Algeria; National Centre for Research and Development of Fisheries and Aquaculture (CNRDPA) 11, Bd Amirouche PO Box 67, Bousmail (W. Tipaza), Algeria. Electronic address: hsidalo@yahoo.fr.
  • Badis A; Department of Industrial Chemistry, Faculty of Technology, University of Saàd Dahlab at Blida, PO Box 270, 09000 Blida, Algeria; Laboratory of Natural Substances Chemistry and Biomolecules, University of Saàd Dahlab at Blida, PO Box 270, 09000 Blida, Algeria; National Centre for Research and Development of Fisheries and Aquaculture (CNRDPA) 11, Bd Amirouche PO Box 67, Bousmail (W. Tipaza), Algeria.
  • Boucherit A; Department of Industrial Chemistry, Faculty of Technology, University of Saàd Dahlab at Blida, PO Box 270, 09000 Blida, Algeria.
Ecotoxicol Environ Saf ; 110: 110-20, 2014 Dec.
Article en En | MEDLINE | ID: mdl-25216029
The present study was undertaken to investigate the degradation and removal of direct yellow 9 (DY9) by the electro-Fenton (EF) process in batch reactor using iron and stainless steel electrodes. DY9 removal decreased with the increase in pH (3 to 8) and increased with the increase in current intensity (0.05 to 0.2A) and [H2O2] (0 to 0.5gL(-1), but not with high doses which led to low rates of DY9 removal and OH(∙) uptake). The regression quadratic models describing DY9 degradation yield "R (percent)" and electrical energy consumption "EEC (kWhkg(-1))" were validated by the analysis of variance (ANOVA) and were both noted to fit well with the experimental data. The R(2) correlation coefficients (0.995, 0.978), those adjusted coefficients (0.986, 0.939), and F values (110.7, 24.9) obtained for the responses validated the efficiency of model. The results revealed that among several other parameters, EEC depended essentially on the degradation yield. The eco-toxicity tests showed a positive correlation between catalase activity and DY9 concentration, and catalase could be qualitatively identified to assess the effect of dye and its by-products generated during the EF process.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Compuestos Azo / Contaminantes Químicos del Agua / Catalasa / Eliminación de Residuos Líquidos / Colorantes / Peróxido de Hidrógeno / Hierro / Naftalenos Límite: Animals Idioma: En Revista: Ecotoxicol Environ Saf Año: 2014 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Compuestos Azo / Contaminantes Químicos del Agua / Catalasa / Eliminación de Residuos Líquidos / Colorantes / Peróxido de Hidrógeno / Hierro / Naftalenos Límite: Animals Idioma: En Revista: Ecotoxicol Environ Saf Año: 2014 Tipo del documento: Article Pais de publicación: Países Bajos