Pervaporation of phenols

Patent · Sat Dec 31 23:00:00 EST 1988

OSTI ID:866850

Boddeker, Karl W ^[1]

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1. Breitenfelde, DE

Aqueous phenolic solutions are separated by pervaporation to yield a phenol-depleted retentate and a phenol-enriched permeate. The separation effect is enhanced by phase segregation into two immiscible phases, "phenol in water" (approximately 10% phenol), and "water in phenol" (approximately 70% phenol). Membranes capable of enriching phenols by pervaporation include elastomeric polymers and anion exchange membranes, membrane selection and process design being guided by pervaporation performance and chemical stability towards phenolic solutions. Single- and multiple-stage procresses are disclosed, both for the enrichment of phenols and for purification of water from phenolic contamination.

• Research Organization: Bend Research Inc
• DOE Contract Number: AC03-83ER80034
• Assignee: Bend Research, Inc. (Bend, OR)
• Patent Number(s): US 4806245
• OSTI ID: 866850
• Country of Publication: United States
• Language: English

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/210/
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