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Dear Jeffrop, I have not been keeping up with responses and apologige for the delay in getting back to you. I hope you have your problem solved by now. Steve

Ric, Sulfide precipitation of nickel is very cost effective. This is necessary if you have tight limits or any kind of chelating agent present. If the metal concentration is high, I recomend a two step precipitation process of hydroxide precipitation followed by sulfide precipitation. You...

We have been investigating sources of waste caustic from the alumunum extrusion industry. We can add it to our products for wastewater treatment. I would like to know the availability and your location. I can be reached at 919-678-0000 if you are interested. Also, if you are not interested...

Dear Jeff, EDTA/Nickel complexes are very stable and difficult to break to precipitate the nickel. Sulfide treatment is the best hope but suggest that ferrous also be added as a chelate breaker. Also suggest a high ph around 10-11. We specialize in heavy metal removal and sell inorganic...