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Title: Closed end regeneration method

Patent ·
OSTI ID:1175804
;

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.

Research Organization:
Industrial Science & Technology Network Inc., York, PA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FG02-97ER82409
Assignee:
Industrial Science & Technology Network Inc. (York, PA)
Patent Number(s):
7,067,062
Application Number:
10/993,352
OSTI ID:
1175804
Country of Publication:
United States
Language:
English

References (14)

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Characterization and application of silylated substrates for the preconcentration of cations journal May 1976
Access in mesoporous materials: Advantages of a uniform pore structure in the design of a heavy metal ion adsorbent for environmental remediation journal June 1997
Adsorption and structure of MCl2 (M = Co2+, Cu2+, Zn2+, Cd2+, and Hg2+) complex species on a chemically modified silica gel surface with 1,4-diazabicyclo(2.2.2)octane journal April 1992
Immobilized ligands on silica: Uptake of cobalt and other metals by 1-nitroso-2-naphthol journal January 1986

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