EFFECT OF ELECTROLYTE PROPERTIES ON CURRENT EFFICIENCY OF BIPOLAR PACKED BED ELECTRODES

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

KATSUKI KUSAKABE¹  TAKESHI KIMURA¹  SHIGEHARU MOROOKA¹  YASUO KATO¹ 

[1] Department of Applied Chemistry., Kyushu University

关键词: Electrolysis;    Waste Water Treatment;    Three Dimensional Electrodes;    Current Efficiency;    Electrowinning;   

DOI  :  10.1252/jcej.17.293

来源: Maruzen Company Ltd

【 摘 要 】

References(12)Cited-By(6)Electric current densities via different pathways and current efficiencies were evaluated in a bipolar packed bed electrode cell of 0.1m × 0.1m in cross section and 0.2m in height. The particulate electrodes were cylindrical ferrite pellets 6mm in diameter and 6mm long. The bypass current density was dependent on electrical conductivity of electrolyte, solid holdup, cell configuration and cell voltage. The Faradaic current density under the mass transfer-controlling condition was simulated with the mass transfer coefficient in packed bed, the ratio of effective area to surface area of each pellet, solid holdup and depolarizer concentration. The overall current efficiency was expressed as a function of bypass current density, Faradaic current density and actual current efficiency. Introduction of inert gas bubbles increased the maximum current efficiency by about 15%.

【 授权许可】

Unknown