Treatment of dilute acidic solutions

Details Treatment of dilute acidic solutions Treatment of dilute acidic solutions

1994-02-14

1995-08-22

McCarthy, Neil

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210727, 210915, C02F 158, C02F 154

Patent

active

054437415

ABSTRACT:
A process for the treatment of acidic fluoride-containing solutions to neutralize them and to remove fluoride ion in the form of a readily filterable precipitate which comprises mixing the acidic solution with a suspension of an alkaline earth metal oxide or hydroxide, wherein a flocculating agent is incorporated in the acidic solution before mixing thereof with the alkaline earth metal oxide or hydroxide.

REFERENCES:
patent: 2371759 (1945-03-01), King et al.
Rabosky, J. G.; Miller, J. P. Jr.; "Fluoride Removal by Lime Precipitation and Alum and Polyelectrolyte Coagulation" pp. 669-676.

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