PERVAPORATION MEMBRANE AND METHOD FOR CONCENTRATING PHENOLS
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United States of America Patent
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Issued Date -
Dec 24, 2015
app pub date -
Jan 20, 2014
filing date -
Jan 25, 2013
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Abstract
A pervaporation membrane having superior durability and a phenol concentrating method which can efficiently concentrate phenols with the pervaporation membrane are provided. A pervaporation separation apparatus 100 includes a treatment target liquid tank 110, a pervaporation membrane module 120, a permeated material recovering tank 130 and a non-permeated material storage tank 140. The pervaporation membrane module 120 includes a pervaporation membrane 1 having a porous support body and an enveloping layer formed of a polyamide-containing resin. The phenol concentrating method of the present invention includes a pretreatment process for pretreating phenol aqueous solution stored in the treatment target liquid tank 110, a pervaporation process for treating the phenol aqueous solution in the pervaporation membrane module 120 with a pervaporation method and a condensation process for condensing a permeated material permeating across the pervaporation membrane 1 to obtain concentrated phenol aqueous solution.
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