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-----Removal of heavy metal from dye wastewater by electrolysis
Q. How could I remove heavy metal from dye wastewater by chemical electrolysis?
Masi M [surname deleted for privacy by Editor]student - Serdang, Selangor, Malaysia
February 15, 2011
A. Hi, Masi. Please describe your student project in a bit more detail. Usually electrolysis is only applicable to rather high concentrations of heavy metals because the efficiency plummets at low concentration. The Nernst equation might be interesting to bring into your discussion. Good luck!
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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A. In some cases, chelating ion exchange resins can remove heavy metals from dye wastes, and also concentrate them for electrolytic or other recovery.
Some lab scale testing can determine if this is applicable to your situation.
consultant - Cleveland Heights, Ohio
Q.
My SV asked me to work on electrolysis and removal of Zinc, Copper and Chromium from dye wastewater. Just that and I should analyze by AAS ⇨
Chronoamperometry Analysis, ICP, Voltammeter techniques. So is it perfect method or I should change my waste because of concentration of metals?
student - Serdang, Selangor, Malaysia
March 11, 2011
A. I've had good results treating black and red anodizing dyes (which contain organic chromium III molecules) with a well-designed electrocoagulation system. It worked great to completely precipitate the dye from the water leaving a colorless and chrome-free effluent.
Jon Barrows, MSF, EHSSC
Independence MO
A. Hi, Masi. It sounds like you are doing research rather than looking for the most practical treatment method for a given waste product. Thus I see nothing wrong with continuing your efforts. I think you will demonstrate the sharply reduced efficiency that I mentioned as the concentration declines. Logging some good data on this will be very useful. Good luck.
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
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