发明名称 |
ELECTRODIALYSIS METHOD FOR PURIFYING OF SILICATE-CONTAINING POTASSIUM HYDROXIDE ETCHING SOLUTION |
摘要 |
An electrodialysis method for the treatment of silicate-containing potassium hydroxide etching waste solution is provided. The method comprises: providing a reaction tank including a cathode, an anode, and two cation dialysis membranes, wherein the reaction tank is divided by the cation dialysis membranes into a cathode chamber, an anode chamber and a waste solution disposing chamber located therebetween; filling a sulfuric acid solution into the anode chamber; filling a potassium hydroxide solution into the cathode chamber; introducing a silicate-containing potassium hydroxide etching waste solution into the waste solution disposing chamber; and applying a voltage and a current density to each of the chambers to render potassium ions to transport from the waste solution chamber through the cation dialysis membrane to the cathode chamber.
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申请公布号 |
CA2692210(C) |
申请公布日期 |
2013.01.29 |
申请号 |
CA20102692210 |
申请日期 |
2010.02.08 |
申请人 |
ASIA UNION ELECTRONIC CHEMICAL CORPORATION;KISMART CORP |
发明人 |
YANG, WEI-LIANG;DOVE, CURTIS DOUGLAS;CHANG, GOANG-CHENG |
分类号 |
C23F1/46;B01D61/42;C25C1/00 |
主分类号 |
C23F1/46 |
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