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Closed end regeneration method

United States Patent

June 27, 2006
View the Complete Patent at the US Patent & Trademark Office
A nanoporous reactive adsorbent incorporates a relatively small number of relatively larger reactant, e.g. metal, enzyme, etc. particles (10) forming a discontinuous or continuous phase interspersed among and surrounded by a continuous phase of smaller adsorbent particles (12) and connected interstitial pores (14) therebetween. The reactive adsorbent can effectively remove inorganic or organic impurities in a liquid by causing the liquid to flow through the adsorbent. For example, silver ions may be adsorbed by the adsorbent particles (12) and reduced to metallic silver by reducing metal, such as irons, as the reactant particles (10). The column can be regenerated by backwashing with the liquid effluent containing, for example, acetic acid.
Yang; Arthur Jing-Min (Lancaster, PA), Zhang; Yuehua (State College, PA)
Industrial Science & Technology Network Inc. (York, PA)
10/ 993,352
November 22, 2004
This invention was made with Government support under Contract No. DE-FG02-97ER82409 awarded by the Department of Energy. The Government has certain rights to this invention.