NDLI: Effect of solution volume on the rate of metal recovery and its distribution in porous cathode

Content Provider	Springer Nature Link
Author	Masliy, A. I. Poddubny, N. P. Sukhorukov, D. V.
Copyright Year	2008
Abstract	By means of earlier developed dynamic model of porous electrode, numerical analysis is given of the effect of the division into smaller parts of optimal volume V $_{opt}$ of metal-containing solution circulating through the porous electrode, which ensures both achieving of the metal preset recovery and the prescribed final porosity in the critical cross-section of the porous cathode, most strongly filled with the deposit. It is shown that the result depends significantly on the presence (or absence) of oxidant ions in the solution. In the absence of oxidant, the division of V $_{opt}$ is desirable; it entails some improving of the distribution uniformity and increase in the deposit eventual mass. On the contrary, in the presence of oxidant such a division brings about marked negative consequences: (1) the metal deposit stronger localization at the porous electrode front edge and (2) decrease in the deposit’s final mass. It was shown that these phenomena result from the formation of anodic zone in the porous electrode rear side in the initial stage of the processing of the second and subsequent portions of solution. This is promoted by low polarization in this part of the porous electrode and the presence of a soluble metal deposited here during the final stage of electrolysis of the solution preceding portion.
Starting Page	1092
Ending Page	1099
Page Count	8
File Format	PDF
ISSN	10231935
Journal	Russian Journal of Electrochemistry
Volume Number	44
Issue Number	10
e-ISSN	16083342
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2008-10-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	porous electrode metal recovery circulation mode solution volume oxidant anodic zone simulation Physical Chemistry Electrochemistry
Content Type	Text
Resource Type	Article
Subject	Electrochemistry

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