Inorganic ion sorbents

Catalyst – solid sorbent – or support therefor: product or process – Solid sorbent

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C502S315000, C502S406000

Reexamination Certificate

active

07122502

ABSTRACT:
A process and medium for decontamination of water containing anionic species including arsenic and chromium, wherein compounds comprising divalent and trivalent metal oxides and sulfides are used to form surface complexes with contaminants under pH conditions within the range of potable water. In one embodiment natural and synthetic spinels and spinel-like materials are used as the sorbent substance.

REFERENCES:
patent: 3767571 (1973-10-01), Lorenc et al.
patent: 4134831 (1979-01-01), Dawson et al.
patent: 4201667 (1980-05-01), Liao
patent: 4263020 (1981-04-01), Eberly
patent: 4366128 (1982-12-01), Weir et al.
patent: 4392979 (1983-07-01), Lee et al.
patent: 4458030 (1984-07-01), Manabe et al.
patent: 4738834 (1988-04-01), Moore et al.
patent: 4752397 (1988-06-01), Sood
patent: 4935146 (1990-06-01), O'Neill et al.
patent: 5369072 (1994-11-01), Benjamin et al.
patent: 5378366 (1995-01-01), Yen
patent: 5505857 (1996-04-01), Misra et al.
patent: 5556545 (1996-09-01), Volchek et al.
patent: 5603838 (1997-02-01), Misra et al.
patent: 5853678 (1998-12-01), Sugimori et al.
patent: 5911882 (1999-06-01), Benjamin et al.
patent: 5985790 (1999-11-01), Moskovitz et al.
patent: 6030537 (2000-02-01), Shaniuk et al.
patent: 6042731 (2000-03-01), Bonnin
Singh et al., “Adsorption technique for the treatment of As (V)-Rich Effluents,” Colloids and Surfaces A: Physicochemical and Engineering Aspects, 111, 1996. 49-56.
Matis et al., Flotation Removal of As(V) onto Goethite, Environmental Pollution, vol. 97, No. 3, 1997, 239-245.
Driehaus et al., “Granulare Ferric Hydroxide— A New Adsorbent for the Removal of Arsenic from Nautral Water,” J. Water Srt—Aqua, 47, 1998, 30-35.
Baisley et al., “Anion Scavengers for Low-Level Radioactive Waste Repository Backfills,” Journal of Soil Contamination, 7(2), 1998, 125-141.
Viraraghavan et al., “Arsenic in Drinking Water—Problems and Solutions,” Water Science & Technology, vol. 40, No. 2, 1999, 69-76.
Fryxell et al., “Design and Synthesis of Selective Mesoporous Anion Traps,” Chemistry of Materials, vol. 11, No. 8, 1999, 2148-2154.
Lefevre et al., “Uptake of Iodide by a Mixture of Metallic Copper and Cupric Compounds,” Environmental Science & Technology, vol. 33, No. 10, 1999, 1732-1736.
Lefevre et al., “Sorption of Iodide on Cuprite (Cu2O)m,” Langmuir, vol. 16, No. 10, 2000, 419-4527.
Wu et al., “Competitive Adsorption of Molybdate, Chromate, Sulfate, Selenate, and Selenite on y-A12O3,” Colloids and Surfaces A: Physicochemical and Engineering Aspects, 166, 2000, 251-259.
Chiu et al., “Arsenic Adsorption and Oxidation at Manganite Surfaces. 1. Method for Simultaneous Determination of Adsorbed and Dissolved Arsenic Species,” Environmental Science & Technology, vol. 34, No. 10, 2000, 2029-2034.
Pierce et al., “Adsorption of Arsenite and Arsenate on Amorphous Iron Hydroxide,” Water Research, vol. 16, 1982, 1247-1253.
Xu et al., “Influence of pH and Organic Substance on the Adsorption of As(V) on Geologic Materials,” Water, Air, and Soil Pollution 40 (198) 293-305.
Benjamin et al., “Sorption and Filtration of Metals Using Iron-Oxide-Coated Sand,” Water Research, vol. 30, No. 11, 1996, 2609-2620.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Inorganic ion sorbents does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Inorganic ion sorbents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inorganic ion sorbents will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3620657

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.