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PROCESS TO SEPARATE BY-PRODUCTS FROM A METAL DEPOSITION BATH WITHOUT ELECTROLYSIS AND PROCESS TO TREAT A WATER SOLUTION THAT UNDERSTANDS AN ALKANOL-AMINE COMPLEXING AGENT AND A COMPLEXED HEAVY METAL
PROCESS TO SEPARATE BY-PRODUCTS FROM A METAL DEPOSITION BATH WITHOUT ELECTROLYSIS AND PROCESS TO TREAT A WATER SOLUTION THAT UNDERSTANDS AN ALKANOL-AMINE COMPLEXING AGENT AND A COMPLEXED HEAVY METAL
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机译：无需电解即可从金属沉积浴中分离出副产物的方法以及处理可理解烷基胺络合剂和重金属的水溶液的方法
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摘要
Methods are provided for separating by-products from alkanolamine complexing agents and heavy metals complexed with alkanolamines, and for the waste-treating of solutions containing such complexed heavy metals and complexing agents. Illustratively, the pH of an electroless metal deposition bath or bath effluent which contains an alkanolamine complexing agent and an alkanolamine-complexed heavy metal is adjusted to render the complexing agent and complexed heavy metal extractable by an ion exchange medium, the pH-adjusted bath liquid is contacted with an ion-exchange medium capable of extracting the complexed heavy metal and complexing agent, the contacted bath liquid, which contains by-products and is substantially free of the complexed heavy metal and the complexing agent is removed from the ion exchange medium and the complexed heavy metal and complexing agent are recovered from the exchange medium for further use in electroless metal deposition baths.
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