Ion and Ionic Current Sinks for Electrodeionization of Simulated Cadmium Plating Rinse Waters

被引：19

作者：

Dermentzis, Konstantinos ^{[1
]}

Christoforidis, Achilleas ^{[2
]}

Papadopoulou, Despoina ^{[1
]}

Davidisa, Anthimos ^{[1
]}

机构：

[1] Technol Educ Inst TEI Kavala, Dept Sci, Lab Chem Technol & Electrochem, Agios Loucas 65404, Kavala, Greece

[2] Technol Educ Inst TEI Kavala, Dept Petr Technol, Environm Protect Lab, Agios Loucas 65404, Kavala, Greece

来源：

ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY | 2011年 / 30卷 / 01期

关键词：

cadmium removal; membrane-less electrodialysis; Faraday cage; electrostatic shielding; water reuse; AQUEOUS-SOLUTIONS; WASTE-WATER; REMOVAL; EFFLUENT;

D O I：

10.1002/ep.10438

中图分类号：

X [环境科学、安全科学];

学科分类号：

083001 [环境科学];

摘要：

In this study, electrostatic shielding zones made of electrode graphite powder were constructed and used as a new type of ionic and electronic current sinks. Because of the local elimination of the applied electric field, voltage, and current within these zones, ions are led inside them and accumulate there. The current sinks were implemented in electrodeionization of simulated cadmium plating rinse waters containing 50 mg/L of Cd2+ ions with simultaneous electrochemical regeneration of the ion exchange resin beds. Pure water was obtained with a Cd2+ ion concentration of less than 0.1 mg/L at a flow rate of 3.27 x 10(-4) L/s diluate stream, a current density of 2 mA/cm 2, and a current efficiency of 28% for Cd2+ ion removal. (C) 2010 American Institute of Chemical Engineers Environ Prog, 30: 37-43, 2011

引用

页码：37 / 43

页数：7

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