Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1983-01-17
1984-08-14
Castel, Benoit
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
210722, 210724, 210754, 210759, 210912, 210913, C02F 152
Patent
active
044655983
ABSTRACT:
A method for removing heavy metals from brines used as well servicing fluids in which the heavy metal is oxidized to a higher, stable oxidation state of +3 or greater, the oxide or variants thereof of the oxidized metal is formed resulting in a generally water insoluble precipitate which is then removed by filtration leaving the brine free of deleterious amounts of the heavy metal.
REFERENCES:
patent: 3649532 (1972-03-01), McLean
patent: 3649533 (1972-03-01), Reijonen et al.
patent: 4016075 (1977-04-01), Wilkins
Darlington Roy K.
Henry, Jr. George
Lowell Jack L.
Castel Benoit
NL Industries Inc.
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