Process for solute recovery utilizing recycle liquids having a s

Details Process for solute recovery utilizing recycle liquids having a s Process for solute recovery utilizing recycle liquids having a s

1989-05-26

1991-05-07

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210677, 210688, B01D 1500

Patent

active

050134493

ABSTRACT:
The process of the invention is an adsorptive solute recovery from a dilute solution that, during elution of the adsorbent bed, stores for recycling donor and receiver portions of effluent from the bed that range in concentration from barren to just less than product concentration and just less than product concentration to barren, respectively. The donor and receiver liquids are stored such that their solute concentration profiles as they leave the bed are maintained. The donor liquid is recycled through the adsorbent bed just prior to elution while the bed is treated with the receiver liquid after elution. Steady state operation is established after a number of loading and elution cycles, resulting in improved recovery of solute, reduced recycle rates and lower adsorbent inventory requirements.

REFERENCES:
patent: 3448043 (1969-06-01), Vajna
patent: 4018677 (1977-04-01), Himsley
patent: 4108766 (1978-08-01), Vajna
patent: 4198295 (1980-04-01), Vajna
Kenneth C. Jones et al., "Copper Recovery from Acidic Leach Liquors by Continuous Ion-Exchange and Electrowinning", Journal of Metals, vol. 31, No. 4, Apr. 1979, pp. 19-25.
C. Palmer et al., "Design and Operation of Continuous Ion Exchange Process for Treating Uranium Mine Water", presented at the 45th Annual Meeting of the International Water Conference, Pittsburgh, Pa., Oct. 22-24, 1984.
Himsley Engineering Ltd., "CMPBIX", Ion Exchange Update.

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