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Size Characteristics of Micro-bubbles According to Applied Voltage and Electrode materials  

Park, Yong-hyo (서울대학교 지구환경시스템공학부)
Han, Moo-young (서울대학교 지구환경시스템공학부)
Publication Information
Journal of Korean Society of Water and Wastewater / v.16, no.6, 2002 , pp. 663-669 More about this Journal
Abstract
Electro-flotation (EF) has shown advantages, such as a high removal efficiency and easy control of bubble generation, over dissolved air flotation. However, the fundamental characteristics of the process have not been investigated in detail. According to recent modeling results from trajectory analysis, the size of the bubble is one of the most important factors that affect the efficiency of collision between bubble and particle. In this paper, the size characteristics of bubbles generated from EF under various conditions are measured using a new method for bubble size measurement, the Particle Counter Method (PCM). The size of the generated bubbles was found to be constant with respect to applied voltage but to vary with the electrode materials. These results and their implications are discussed.
Keywords
Bubble size; electro-flotation; trajectory analysis; PCM;
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