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Electroless nickel wastewater treatment

I am engineering student and I am looking for a form to give to treatment to the water of remainder of a line of electroless nickel, as well as to the bath that already expired its time of life. I have reviewed inverse osmosis, evaporation, ionic interchange and carbamates.

Frias Jesus
student - Tijuana B.C. Mexico
September 21, 2010

Electroless nickel bath becomes spent after a few turnovers. This is mainly because of the build-up of the oxidation products following oxidation of the reducing agents used in these baths.

Pumping the spent solution to a separate tank, addition of alkali or alkaline earth metal salts to precipitate the oxidation product, removal by filtration, adjustment of the bath constituent to the desired level and re-use is one option.

Electrodialysis is another useful method.

T.S.N. Sankara Narayanan
- Chennai, Tamilnadu, India
(ed.note Nov. 2017: The good doctor has a fascinating blog at https://advancementinscience.wordpress.com)
September 29, 2010

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