Measurement of Gas Bubbles Distribution on Electroflotation Process Using Titanium and Stainless Steel Electrode with DinoCapture 2.0

Size distribution of gas bubbles were important factor in electroflotation systems because small bubbles increased the efficiency of floc floatation. The aimed in this study was to evaluate the digital microscope (DinoLite) for diameter measurement of gas bubble distribution on the electroflotation process. In this study, effects of constant voltage on size distribution of gas bubble were determined by 11.21 V and 31 V. The electroflotation system was designed by stainless steel cathode and titanium anode which was supplied by constant DC voltage for 30 minutes. The image of gas bubble was captured by DinoLite and then the size of gas bubble was measured by DinoCaptured 2.0 and free ImageJ software. These results were then compared and verified by correlation coefficient (R2) of linear regression equation. The results showed that applied voltage effects the average size of gas bubble distribution in electroflotation process. When low voltage (11 V) was applied, the average size of gas bubble formed in 0.01-0.09 mm2 both on cathode and anode surface. Meanwhile, the average size of gas bubble at 21 and 31 V tends to be in 0.01-0.09 and >0.1 mm2 on cathode and anode surface.