Method for separating and recovering objective component

Details Method for separating and recovering objective component Method for separating and recovering objective component

1997-10-20

2000-03-21

Fortuna, Ana

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210650, 210651, 210652, 2101952, B01D 6100

Patent

active

060398795

ABSTRACT:
A method for separating and recovering an objective component from a crude liquid by a membrane in a semi-batch system, including the steps of: at least two stages of adding a washing liquid to the crude liquid stored in a container and mixing the washing liquid with the crude liquid to form a mixture of the crude liquid and the washing liquid, wherein successive ones of the at least two stages are separated by a time lag, wherein the successive ones use washing liquids at different concentrations, in descending order, of the objective component concentration, and further wherein a last one of the plural stages uses only a washing liquid having essentially a zero concentration of the objective component; and for each of the plural stages, performing a step of membrane treatment of the mixture to transfer the objective component from the crude liquid to a permeated liquid.

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patent: 5028337 (1991-07-01), Linder et al.
patent: 5352476 (1994-10-01), Brule et al.
patent: 5503750 (1996-04-01), Russo, Jr. et al.

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