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topic 5731



Looking for some expert advice on the removal of ammonia without causing too much increase or decrease in the recycling water containing it. Any info on improved water-insoluble resin for his purpose would be appreciated. Prof. J D Fontana

JosÈ Domingos Fontana
UFPR - Federal University of Parana - CURITIBA, Parana State, Brazil


A general purpose cation resin should work to remove ammonia (ammonium, NH4+). There may also be selective types. The problem may be that if other ions are present in any quantity they could interfere with the exchange process.

bill vins
Bill Vins
microwave & cable assemblies
Mesa (what a place-a), Arizona 


Do you remember that guy in the world war I from Germany? He was a Jew and it seems that he murdered his wife because she did not agree with him about the chemical warfare. Germany was getting NO3 supplies from the Chile's guano. However, the allies closed the sea around Chile and the Germans could not get anymore the drops of the birds. No guano, no ammunition. Any way Mr. Harber was a nationalist and he found a way to get nitrogen from atmosphere and then convert in NH4, through a platinum catalyst. After that NH4 was converted in NO3 and then the Germans could make bombs and sustain the war. He called it Harber process N2(g) + 3H2(g) <=> 2NH3(g) ... delta-H = -92.4 Kj/mol.

Try to invert the process.

Dr. Fontana if you need more help let me know. By the way, what happened with Madalena?

Dr. Antonio Teixeira
- Toronto, Ontario, Canada

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