Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1995-03-15
1996-07-02
Nessler, Cynthia L.
Liquid purification or separation
Processes
Ion exchange or selective sorption
210915, 423 25, 423 34, 423101, 423140, 205 99, 588248, 588252, C02F 128
Patent
active
055319033
ABSTRACT:
A process is provided for the removal of fluoride from a metal sulphate solution, such as a zinc sulphate solution, which presents an option for the disposal of waste treatment sludge from the aluminum anodizing industry. The fluoride is removed from metal sulphate solution by mixing the sludge with the solution for a predetermined period of time and then performing a solid/liquid separation.
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Other material Rakhmankulov, A. I.; Kozlov, P. A.; Khan, O. A.; Marinina, K. I.; Korchagina, E. D.; Zababurina, R. M. "Mechanism of defluorination of zince sulphate solutions by aluminum hydroxide" (Russian with English translation). (1985).
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Boateng Daniel A. D.
Hampton Cashman R. S. M.
Steiner Victor E.
Cominco Ltd.
de Kock Elbie R.
Nessler Cynthia L.
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