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DOI : ,    Vol.20, No.6, 87 ~ 95, 2012
Title
Separation of Micron-sized particles in Water using Acoustic Standing Waves
안재환 Jae Hwan Ahn , 안광호 Kwang Ho Ahn
Abstract
Characteristics of micron-sized particles separation in water using acoustic standing wave were studied. Ultrasonic wave transducer as of 1.0 MHz frequency were utilized and 6.3 ㎛ clay and 5.1 ㎛ kaolin in average diameter were used as experimental materials in water. The dimension of particle separation reactor was L200xW100xH100. Once acoustic standing wave are generated in water, water temperature rises by 0.15~0.20 ℃/min due to a sound pressure. Initial concentration of clay and kaolin were controlled 0.43, 0.10 0.18, 0.27, 0.32 g/L and 0.1, 0.2, 0.3, 0.4, 0.5 g/L, respectively. Removal efficiency of turbidity in a reacting chamber after 10 minutes clay and 5 minutes kaolin, when acoustic sound wave was formed in most distinct, was measured to have 13.4~34.0% for clay and 18.2~56.2% for kaolin at 1.0 MHz frequency.
Key Words
Acoustic standing wave, Particle separation, Clay, Kaolin, Turbidity
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