Kinetic modeling of a triarylmethane dye decolorization by photoelectro-Fenton process in a recirculating system: Nonlinear regression analysis

Title
Kinetic modeling of a triarylmethane dye decolorization by photoelectro-Fenton process in a recirculating system: Nonlinear regression analysis
Author(s)
주상우알리레자카타이Behrouz Vahid[ Behrouz Vahid]Behzad Behjati[ Behzad Behjati]Mahdieh Safarpour[Mahdieh Safarpour]
Keywords
ELECTRO-FENTON; DEGRADATION; ACID; GENERATION; OXIDATION; REMOVAL; PHENOL; H2O2
Issue Date
201402
Publisher
INST CHEMICAL ENGINEERS
Citation
CHEMICAL ENGINEERING RESEARCH & DESIGN, v.92, no.2, pp.362 - 367
Abstract
The treatment of C.I. Acid Blue 5 solution by electrochemical process was studied under recirculation mode with a cathode containing multi walled carbon nanotubes in the presence of sodium sulfate electrolyte. Comparison of electro-Fenton and photoelectro-Fenton processes at pH 3.0 revealed that 23.04 and 98.25% of the dye was decolorized at 60 min, respectively. The kinetic of dye removal by photoelectro-Fenton process was studied with nonlinear regression analysis. A kinetic model was developed for estimation of pseudo-first order rate constant (k(app)) as a function of operational parameters including initial concentration of the dye (10-50 mg/L), flow rate (5-20 L/h), pH (3-9), initial concentration of Fe3+ (0.05-0.2 mM) and applied current (0.05-0.45 A). The calculated results, which were obtained from kinetic model, were in consistent with the experimental data (R-2 = 0.9934). The calculated and experimental data were applied for prediction of the electricity consumption in decolorization processes. (C) 2013 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/33219http://dx.doi.org/10.1016/j.cherd.2013.07.019
ISSN
0263-8762
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공과대학 > 기계공학부 > Articles
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