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-----Removing zinc and nickel from waste for school project
Q. Hello,
I have to remove zinc and nickel from waste solution for my project. I am not very familiar with fundamentals and definitions of electrochemical processes. Do you have any idea about a good text book or any reference that I can use. I did not find a good book to understand definitions very well.
Thank you,
student - Toronto, Ontario, Canada
2004
A. Please see our booklist, Mitra. Relatively accessible books include the Metal Finishing Guidebook, the Electroplating Engineering Handbook ⇦ this on eBay, AbeBooks, or Amazon [affil link] and Kushner's "Water and Waste Control for the Plating Shop" ⇦[this on eBay, Amazon, AbeBooks affil links]. The simplest way to look at it, and which is at least mostly true, is that while the water remains acidic the zinc and nickel stay dissolved as simple salts. But when you raise the pH to 8 to 11 range, the zinc and nickel precipitate as hydroxides and can be filtered out to a concentration in about the 1 to 10 ppm range. Good luck.
Ted Mooney, P.E.
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