Effect of suspended CuO nanoparticles on mass transfer to a rotating disc electrode |
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Authors: | O.N. Sara,F. ?ç erS. Yapici,B. Sahin |
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Affiliation: | a Department of Chemical Engineering, Faculty of Engineering, Atatürk University, 25240 Erzurum, Turkey b Department of Mechanical Engineering, Faculty of Engineering, Atatürk University, 25240 Erzurum, Turkey |
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Abstract: | The effect of suspended CuO nanoparticles on the mass transfer to a rotating disc electrode was investigated experimentally, using the electrochemical limiting diffusion current technique. The particle volume fraction was from 0.39% to 1.94%. The rotating speed ranged from 100 to 1000 rpm, which yielded the Reynolds number between 10 and 110, based on the electrochemically active disc radius. The results showed that the addition of the suspended particles increased the limiting current and the plot of log I vs. log ω resulted in linear lines, of which slopes decreased with increasing particle volume fraction. The ratio of Sh/Sho ranged from 1 to 1.5. The Sherwood number correlation as function of the Reynolds number and the particle volume fraction was also given. |
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Keywords: | Nanofluid Mass transfer Rotating disc Electrochemical limiting diffusion current |
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