Cell design rotating cylinder electrode

Robinson and Walsh have reviewed earlier cell designs. The performance of a 500 A pilot plant reactor for copper ion removal is described. Simplified expressions were derived for mass transport both in single pass [243] and batch recirculation [244]. For a detailed discussion of the principle and the role of the rotating cylinder electrode reactor in metal ion removal the reader is referred to Refs. [13] and [241] (46 references). 

While a membrane-divided rotating cylinder electrode cell facilitates automatic scraping, provides the convenience of a single cathode and gives a uniform silver product, there are several possible disadvantages which must be cofisidered in cell design ... 

Tank Cells. A direct extension of laboratory beaker cells is represented in the use of plate electrodes immersed into a lined, rectangular tank, which may be fitted with a cover for gas collection or vapor control. The tank cell, which is usually undivided, is used in batch or semibatch operations. The tank cell has the attraction of being both simple to design and usually inexpensive. However, it is not the most suitable for large-scale operation or where forced convection is needed. Rotating cylinders or rotating disks have been used to overcome mass-transfer problems in tank cells. An example for electroorganic synthesis is available (46). 

Each of these techniques may be used with numerous cell designs. The design of cell will depend upon the characteristics of the system to be simulated. Commonly, the flow of electrolyte is important and must be known and in such cases, rotating-disc or ring-disc, flow-in-duct, or rotating-cylinder [36, 37] electrodes would be used. 

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