Mass Transfer to Amalgamated Copper Rotating Disk Electrode

被引：3

作者：

Sulaymon, Abbas H. ^{[1
]}

Abbar, Ali H. ^{[2
]}

机构：

[1] Univ Baghdad, Dept Environm Engn, Baghdad, Iraq

[2] Qadessyia Univ, Dept Chem Engn, Al Diwaniyah, Iraq

来源：

JOURNAL OF ELECTROCHEMICAL SCIENCE AND TECHNOLOGY | 2012年 / 3卷 / 04期

关键词：

Rotating disk electrode; Electrodepostion; Mass transfer; Zinc reduction; Amalgamated copper electrode; FLOW-THROUGH CELL; REMOVAL; MERCURY;

D O I：

10.5229/JECST.2012.3.4.165

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

An experimental study of mass transfer to an amalgamated copper rotating disc electrode has been employed to determine an empirical correlation for the mass transfer rate in laminar flow. The study was performed in a three-electrodes configuration using 0.1 M boric acid and 0.1M potassium chloride as supporting electrolyte with Zn (II) concentration in the range (25-100 mg dm(-3)). Polarization curves at different zinc ion concentration are reported. Hydrogen and oxygen reduction has also been considered. The diffusion coefficients and mass transfer coefficient were obtained using limiting diffusion current technique based on zinc ion reduction. A least squares analysis indicates that the laminar flow results for 13067 < Re > 57552 and 550 < Sc > 1390 can be correlated by the following equation with correlation coefficient (CR) equal to 0.98: sh = 0.61Re(0.5) Sc-1/3

引用

页码：165 / 171

页数：7

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