Effect of ultrafine bubbles on ethanol enrichment using ultrasonic atomization

Abstract

To improve ethanol enrichment performance using ultrasonic atomization, ultrafine bubbles (UFB) were added to an ethanol aqueous solution. The ethanol concentration in the solution and the flow rate of carrier gas were changed, and the effect of UFB on the ethanol concentration in the collected mist was investigated. For all conditions, the ethanol concentration in the collected mist with UFB was higher than that without UFB. Especially, the enrichment effect by UFB was remarkable when the ethanol concentration in the solution and the flow rate of carrier gas were low.

Characteristics of Ultrafine Bubbles (Bulk Nanobubbles) and Their Application to Particle-Related Technology

“…The advantages of ultrasonic atomization separation include simple operation, maintenance-free, and suitability for heat sensitive materials. Ultrafine bubbles water was used as a solvent to improve the enrichment performance using ultrasonic atomization (Yasuda et al, 2020b;2022). The ethanol concentration in the collected mist with ultrafine bubbles was higher than that without ultrafine bubbles (Yasuda et al, 2020b).…”

“…Ultrafine bubbles water was used as a solvent to improve the enrichment performance using ultrasonic atomization (Yasuda et al, 2020b;2022). The ethanol concentration in the collected mist with ultrafine bubbles was higher than that without ultrafine bubbles (Yasuda et al, 2020b). When the ethanol concentration in the solution was low and the carrier gas velocity was slow, the enrichment effect of ultrafine bubbles was particularly remarkable.…”

Study on the efficiency of a transducer for sonochemistry by calorimetry

“…Sonochemistry, which uses ultrasound in water to induce or enhance chemical reactions, has been applied to synthesis, [1][2][3][4][5][6] decomposition, [7][8][9] dispersion, [10][11][12] aggregation, 13,14) agitation, 15) extraction, 16) cleaning, 17,18) atomization, [19][20][21][22] CO 2 capture and storage, 23,24) and wastewater treatment. 25) The performance of a sonochemical reactor can be evaluated through dosimetry measurements of the amount of substance in the reacted material.…”

Quantitative evaluation of ultrasonic cleaning ability using acoustic cavitation signal

“…Ultrasonic cleaning is used for quality control in several fields; [1][2][3][4][5] for example, the removal of foreign objects from electrical components to improve their performance 6) and from semiconductor substrate wafers to improve their characteristics and the reliability of semiconductor devices. 7) Furthermore, in the medical field, high cleanliness is required for various types of medical apparatuses to prevent inhospital infection.…”