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Iranian Journal of Chemistry and Chemical Engineering، جلد ۴۰، شماره ۱، صفحات ۳۲۳-۳۳۲
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عنوان انگلیسی Oxidants Emergence under Dual-Frequency Sonication within Single Acoustic Bubble: Effects of Frequency Combinations
چکیده انگلیسی مقاله The sonochemical activity of an oxygen bubble formed in an aqueous medium and oscillating under a dual-frequency excitation is studied in this paper. Several couples of frequencies are formed amongst 35, 140, 300, and 515 kHz, with a maximum acoustic amplitude of 1.5 atm. The molar yields of the emerging oxidants are analyzed in accordance with the combined frequencies and compared to the cases of mono-frequency excitations of similar maximum amplitude, i.e., 1.5 atm. Qualitatively, passing from a mono to a dual-frequency excitation demonstrated to be with no effect on the predominant species which remain, and. However, the results exhibited a very selective quantitative evolution depending on the combined frequencies. Some couples proved to induce a negative effect and reduce the production at the single bubble level, particularly with basic frequencies of 140 and 300 kHz, while some others demonstrated a noticeable enhancement such as the couples (35, 140 kHz) and (515, 35 kHz), as compared to mono-frequency fields.
کلیدواژه‌های انگلیسی مقاله Dual-frequency,Oxidants,Sonochemical activity,Acoustic cavitation bubble,Kinetics
نویسندگان مقاله Kaouther Kerboua |
Laboratory of Environmental Engineering, Department of Process Engineering, Faculty of Engineering, Badji Mokhtar - Annaba University, P.O. Box 12, 23000 Annaba, ALGERIA

Oualid Hamdaoui |
Laboratory of Environmental Engineering, Department of Process Engineering, Faculty of Engineering, Badji Mokhtar - Annaba University, P.O. Box 12, 23000 Annaba, ALGERIA

نشانی اینترنتی https://ijcce.ac.ir/article_36705_95340ebbebcb35800ef1b1efaee2c08b.pdf
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