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Decolorization kinetics of Procion H-exl dyes from textile dyeing using Fenton-like reactions
dc.creator | Ntampegliotis, K. | en |
dc.creator | Riga, A. | en |
dc.creator | Karayannis, V. | en |
dc.creator | Bontozoglou, V. | en |
dc.creator | Papapolymerou, G. | en |
dc.date.accessioned | 2015-11-23T10:41:33Z | |
dc.date.available | 2015-11-23T10:41:33Z | |
dc.date.issued | 2006 | |
dc.identifier | 10.1016/j.jhazmat.2005.11.016 | |
dc.identifier.issn | 0304-3894 | |
dc.identifier.uri | http://hdl.handle.net/11615/31452 | |
dc.description.abstract | The decolorization kinetics of three commercially used Procion H-exl dyes was studied using a Fenton-like reagent. The effect of the major system parameters (pH, concentration of H2O2 and Fe3+ and initial dye concentration) on the kinetics was determined. For comparison, the effect of the use of UV irradiated Fenton-like reagent and of Fenton reagent on the kinetics was also examined. In addition, mineralization rates and the biodegradability improvement as well as the effect of the addition of Cl-, Co-3(2-) or HCO3- on the decolorization rates was studied. The reactions were carried out in a 300 ml stirred cylindrical reactor with the capability of UV irradiation. The dye half-life time goes through a minimum with respect to the solution pH between 3 and 4. It also exhibits a broad minimum with respect to Fe3+ and H2O2 at molar ratios of H2O2/Fe3+ from about 100 to 10. The addition of CO32- and HCO3 substantially reduces the decolorization rates, while this effect is significantly less pronounced with Cl-. At an optimum range of parameters, the mineralization rate (TOC reduction) is very slow for the Fenton-like process (TOC decrease from an initial 49.5 to 41.1 mg/l after 30 min and to only 35.2 mg/l after 600 min), but it increases significantly for the photo-Fenton-like process (to TOC values of 39.7 and 11.4 mg/l, respectively). The biodegradability, as expressed by the BOD/COD ratio, increases significantly from an initial value of 0.11-0.55 for the Fenton-like and to 0.72 for the photo-Fenton-like processes. (c) 2005 Elsevier B.V. All rights reserved. | en |
dc.source.uri | <Go to ISI>://WOS:000238931000009 | |
dc.subject | Fenton-like reaction | en |
dc.subject | dye decolorization | en |
dc.subject | dye mineralization | en |
dc.subject | biodegradability | en |
dc.subject | procion H-exl dyes | en |
dc.subject | SIMULATED DYEHOUSE EFFLUENTS | en |
dc.subject | ADVANCED OXIDATION PROCESSES | en |
dc.subject | WASTE-WATER | en |
dc.subject | PHOTOCATALYTIC DEGRADATION | en |
dc.subject | CHEMICAL OXIDATION | en |
dc.subject | HYDROGEN-PEROXIDE | en |
dc.subject | AZO-DYE | en |
dc.subject | REAGENT | en |
dc.subject | DYESTUFFS | en |
dc.subject | INDUSTRY | en |
dc.subject | Engineering, Environmental | en |
dc.subject | Engineering, Civil | en |
dc.subject | Environmental Sciences | en |
dc.title | Decolorization kinetics of Procion H-exl dyes from textile dyeing using Fenton-like reactions | en |
dc.type | journalArticle | en |
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