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http://dx.doi.org/10.7857/JSGE.2016.21.1.080

The Effect of Liquid Height on Sonochemical Reactions in 74 kHz Sonoreactors  

Son, Younggyu (Department of Environmental Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of Soil and Groundwater Environment / v.21, no.1, 2016 , pp. 80-85 More about this Journal
Abstract
Acoustic cavitation can induce various sonochemical effects including pyrolysis and radical reactions and sonophysical effects including microjets and shockwave. In environmental engineering field, ultrasound technology using sonochemical effects can be useful for the removal and mineralization of recalcitrant trace pollutants in aqueous phase as one of emerging advanced oxidation processes (AOPs). In this study, the effect of liquid height, the distance from the transducer to the water surface, on sonochemical oxidation reactions was investigated using KI dosimetry. As the liquid height/volume increased (40~400 mm), the cavitation yield steadily increased even though the power density drastically decreased. It was found that the enhancement at higher liquid height conditions was due to the formation of standing wave field, where cavitation events could stably occur and a large amount of oxidizing radicals such as OH radicals could be continuously provided.
Keywords
Sonochemical reaction; Cavitation yield; Sonochemiluminescence (SCL); KI dosimetry; Liquid height;
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1 Asakura, Y., Nishida, T., Matsuoka, T., and Koda, S., 2008, Effects of ultrasonic frequency and liquid height on sonochemical efficiency of large-scale sonochemical reactors, Ultrason. Sonochem., 15, 244-250.   DOI
2 Adewuyi, Y.G., 2001, Sonochemistry: Environmental science and engineering applications, Ind. Eng. Chem. Res., 40, 4681-4715.
3 Cui, M., Son, Y., Lim, M., Na, S., and Khim, J., 2010, Elimination of two hormones by ultrasonic and ozone combined processes, Jpn. J. Appl. Phys., 49, 07HE09.
4 Esplugas, S., Bila, D.M., Krause, L.G.T., and Dezotti, M., 2007, Ozonation and advanced oxidation technologies to remove endocrine disrupting chemicals (EDCs) and pharmaceuticals and personal care products (PPCPs) in water effluents, J. Hazard. Mater., 149, 631-642.
5 Gogate, P.R., 2007, Application of cavitational reactors for water disinfection: Current status and path forward, J. Environ. Manage., 85, 801-815.
6 Lee, J., Ashokkumar, M., Yasui, K., Tuziuti, T., Kozuka, T., Towata, A., and Iida, Y., 2011, Development and optimization of acoustic bubble structures at high frequencies, Ultrason. Sonochem., 18, 92-98.   DOI
7 Mason, T.J. and Lorimer, J.P., 2002, Applied Sonochemistry-The Uses of Power Ultrasound in Chemistry and Processing, Wiley-VCH Verlag GmbH: Weinheim.
8 Son, Y., Lim, M., Ashokkumar, M., and Khim, J., 2011, Geometric optimization of sonoreactors for the enhancement of sonochemical activity, J. Phys. Chem. C, 115, 4096-4103.   DOI
9 Mehrjouei, M., Müller, S., and Möller, D., 2015, A review on photocatalytic ozonation used for the treatment of water and wastewater, Chem. Eng. J., 263, 209-219.   DOI
10 Pétrier, C., Combet, E., and Mason, T., 2007, Oxygen-induced concurrent ultrasonic degradation of volatile and non-volatile aromatic compounds, Ultrason. Sonochem., 14, 117-121.   DOI
11 Remya, N. and Lin, J.G., 2011, Current status of microwave application in wastewater treatment-A review, Chem. Eng. J., 166, 797-813.   DOI
12 Son, Y., Lim, M., Khim, J., and Ashokkumar, M., 2012, Attenuation of UV light in large-scale sonophotocatalytic reactors: The effects of ultrasound irradiation and TiO2 concentration, Ind. Eng. Chem. Res., 51, 232-239.   DOI
13 Teo, B.M., Chen, F., Hatton, T.A., Grieser, F., and Ashokkumar, M., 2009, Novel one-pot synthesis of magnetite latex nanoparticles by ultrasound irradiation, Langmuir, 25, 2593-2595.   DOI
14 Torres, R.A., Nieto, J.I., Combet, E., Ptrier, C., and Pulgarin, C., 2008, Influence of TiO2 concentration on the synergistic effect between photocatalysis and high-frequency ultrasound for organic pollutant mineralization in water, Appl. Catal. B-Environ., 80, 168-175.   DOI
15 Yao, P., Choo, K.H., and Kim, M.H., 2009, A hybridized photocatalysis-microfiltration system with iron oxide-coated membranes for the removal of natural organic matter in water treatment: Effects of iron oxide layers and colloids, Wat. Res., 43, 4238-4248.   DOI