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Zarei, Mahmoud, Khataee, Alireza, Fathinia, Mehrangiz, Seyyednajafi, Fardin, Ranjbar, Heidar. (1391). Combination of nanophotocatalysis with electro-Fenton-like process in the removal of phenol from aqueous solution: GC analysis and response surface approach. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 3(1), 44-54. doi: https://doi.org/10.1186/2228-5547-3-27
Mahmoud Zarei; Alireza Khataee; Mehrangiz Fathinia; Fardin Seyyednajafi; Heidar Ranjbar. "Combination of nanophotocatalysis with electro-Fenton-like process in the removal of phenol from aqueous solution: GC analysis and response surface approach". نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 3, 1, 1391, 44-54. doi: https://doi.org/10.1186/2228-5547-3-27
Zarei, Mahmoud, Khataee, Alireza, Fathinia, Mehrangiz, Seyyednajafi, Fardin, Ranjbar, Heidar. (1391). 'Combination of nanophotocatalysis with electro-Fenton-like process in the removal of phenol from aqueous solution: GC analysis and response surface approach', نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 3(1), pp. 44-54. doi: https://doi.org/10.1186/2228-5547-3-27
Zarei, Mahmoud, Khataee, Alireza, Fathinia, Mehrangiz, Seyyednajafi, Fardin, Ranjbar, Heidar. Combination of nanophotocatalysis with electro-Fenton-like process in the removal of phenol from aqueous solution: GC analysis and response surface approach. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 1391; 3(1): 44-54. doi: https://doi.org/10.1186/2228-5547-3-27

Combination of nanophotocatalysis with electro-Fenton-like process in the removal of phenol from aqueous solution: GC analysis and response surface approach

International Journal of Industrial Chemistry
دوره 3، شماره 1، اسفند 2012، صفحه 44-54
نوع مقاله: research article
شناسه دیجیتال (DOI): https://doi.org/10.1186/2228-5547-3-27
نویسندگان
Mahmoud Zarei* 1؛ Alireza Khataee1؛ Mehrangiz Fathinia1؛ Fardin Seyyednajafi2؛ Heidar Ranjbar2
1Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, P.O. Box, 51666–16471, Tabriz, Iran
2R&D Center of Tabriz Petrochemical Complex, Tabriz, Iran
چکیده
Background
This study focuses on the application of photoelectro-Fenton (PEF) with Mn2+ as catalyst combined with a photocatalytic process using supported TiO2 nanoparticles for the removal of phenol from aqueous solutions. TiO2 nanoparticles (Degussa P-25) immobilized on glass plates were used as photocatalyst, and carbon nanotube-polytetrafluoroethylene electrode was employed as cathode. Response surface methodology (RSM) was performed to evaluate the effects of the four key factors (initial amount of Mn2+, initial concentration of phenol, reaction time, and applied current) on the PEF/TiO2 process.
Results
The application of RSM after analysis of variance showed a high coefficient of determination value (R2 = 0.918) and thus indicated a high correlation between the observed and predicted values. The optimum operation conditions were located by graphical response surface and contour plots. The optimum initial amount of Mn2+, initial phenol concentration, applied current, and reaction time were found to be 0.3 mM, 15 mg/L, 300 mA, and 150 min, respectively. The observed experimental response for removal efficiency was 69.36 in optimum conditions of variables. The total organic carbon measurements showed 95% mineralization of 20 mg/L phenol at 15 h using the PEF/TiO2 process. The degradation product evolution was verified by gas chromatography analysis.
Conclusions
An empirical relationship between the response and independent variables was attained and expressed by the second-order polynomial equation. Effect of experimental parameters on the removal efficiency of phenol was established by the response surface and contour plots of the model-predicted responses.
کلیدواژه‌ها
Carbon nanotube؛ TiO2 nanoparticles؛ Response surface design؛ Photodegradation؛ Electrochemical treatment
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تعداد مشاهده مقاله: 12


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