Modeling and optimizing Acid Orange 142 degradation in aqueous solution by non-thermal plasma.

Autor: Fahmy A; Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, 11884 Cairo, Egypt. Electronic address: alaa.fahmy@azhar.edu.eg., El-Zomrawy A; Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, 11884 Cairo, Egypt., Saeed AM; Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, 11884 Cairo, Egypt., Sayed AZ; Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, 11884 Cairo, Egypt., Ezz El-Arab MA; Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, 11884 Cairo, Egypt., Shehata HA; Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City, 11884 Cairo, Egypt.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2018 Nov; Vol. 210, pp. 102-109. Date of Electronic Publication: 2018 Jul 03.
DOI: 10.1016/j.chemosphere.2018.06.176
Abstrakt: The effects of the high voltage electrode material, initial pH of the solution, initial concentration of Fe 2+ , and time of plasma treatment on the efficiency of Acid Orange 142 (AO142) degradation were studied and evaluated. Furthermore, based on the Box-Behnken response surface methodology (BBD-RSM), a model between response (decolorization efficiency %) and influencing factors was proposed to estimate the interactive effects and optimize the process conditions. The proposed model was adequate with an R 2 of 0.8005 which is in reasonable agreement with the R 2 adj of 0.9307. According to the model, the optimum conditions were steel as a high voltage electrode, an initial pH 3.0, an initial Fe 2+ concentration 0.9 mM, and 20 min time of treatment to obtain a decolorization efficiency of 95.05%. In addition, the analytical results of UV-Vis, FT-IR, TOC and GC-MS indicated the degradation of the dye molecule.
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Databáze: MEDLINE
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