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topic 3947

Emissions control from bright nickel plating?


(1999)

Has anyone tried using a wetting agent or fume suppressant in bright nickel plating? The emission factors are tight and will be getting tighter. If suppressants work for hard chrome, why not nickel? Our tanks use the Watts process at 150 deg. F and are air-agitated. We make nickel screens for the textile printing industry and there is no substitute for nickel.

Rick Alexander
- engravers - Gaffney, South Carolina


Well, Rick, most nickel plating baths require wetting agents for successful plating, so that their surface tension is way down in the range of 35 dyne-cm already.

Secondly, in most cases there are almost no emissions to speak of from nickel plating anyway. Have you ever been able to detect any nickel mists in the air?

Regards, Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey


(1999)

Rick,

What Ted said is correct.

You might well be getting, due to the bath temperature, some visible mists in winter time. But I doubt that they are injurious.

However, if you want to clear them up, if you are concerned about the appearance of any emissions, it sure seems that a very ordinary relatively low cost (& low S.P) blade type horizontal mist eliminator would do the job.

A good one, still not expensive, should take out all the mist down to 12 microns. If you want to 'improve' the collection efficiency, you could constantly spray water.

If you wish, give me your parameters........

Cheers!

freeman newton portrait
Freeman Newton
White Rock, British Columbia, Canada

(It is our sad duty to
advise that Freeman passed away
April 21, 2012. R.I.P. old friend).




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