Nanofilter system and method of use

Details Nanofilter system and method of use Nanofilter system and method of use

2006-07-18

2006-07-18

Kim, John (Department: 1723)

Liquid purification or separation

Recirculation

Serially connected distinct treating or storage units

C210S651000, C210S198200, C210S195100, C210S656000, C210S205000, C210S295000, C210S321720, C435S137000, C435S163000, C435S276000, C127S046200, C127S055000, C127S058000, C127S061000, C127S009000

Reexamination Certificate

active

07077953

ABSTRACT:
An acid recovery system used in a hydrolysis operation includes a chromatographic unit to provide initial separation of sugar and acid. The sugar product provided by the chromatographic unit is processed to produce higher value products, such as ethanol. The remaining acid is contaminated by sugar. A nanofiltration unit containing a nanofilter membrane processes the sugar contaminated acid. The acid is allowed to permeate across the nanofilter membrane while sugar is rejected. The permeate is provided to a conventional acid recovery system and recycled for use in the hydrolysis process.

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patent: 2004/0006222 (2004-01-01), Paananen et al.
patent: 2004/0060868 (2004-04-01), Heikkila et al.

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