Remediation material and remediation process for sediments
Patent 6350383 Issued on February 26, 2002. Estimated Expiration Date: 
September 20, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 20, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3575852 3617569 3692671 Removal of phosphate from waste water Method for restoring and maintaining eutrophied natural bodies of waters Groundwater protection system Rare earth stabilized aluminum deficient zeolite Homogeneous catalyst formulations for methanol production Method of treating lake water with aluminum hydroxide sulfate Composition and method for purifying water InventorAssigneeApplicationNo. 381383 filed on 09/20/1999US Classes:210/679, Utilizing exchange or sorbent material associated with inert material210/683, Anions210/688, Heavy metal210/747, Including geographic feature (e.g., drainage ditch, septic, pond)210/906, Phosphorus containing210/911, Cumulative poison210/912, Heavy metal210/913, Chromium405/128.5, Chemical405/129.25, Chemical502/65, And rare earth metal (Sc, Y or Lanthanide)containing502/73, And Group III or rare earth metal (Al, Ga, In, Tl, Sc, Y) or Lanthanide containing502/81, Acid treating502/84And metal, metal oxide, or metal hydroxideExaminersPrimary: Hruskoci, Peter A.Attorney, Agent or FirmForeign Patent References
International ClassC02F 001/42Foreign Application Priority Data1997-03-26 AUAbstractA material and method for removal of environmental oxyanions (and especially phosphates), the material comprising a substrate such as a clay modified with complexing elements selected from Group IIIB, Group IVB, and lanthanide elements (or a mixture of such elements). The resultant modified substrate can bind oxyanions and make them unavailable for utilisation in the environment; in the case of phosphates, by algae and the like. The method includes forming a capping of material at the sediment/water interface, applying the material in the form of pellets at the sediment/water interface, or injecting the pellets into the sediment.Other References
Field of SearchBy making an insoluble substance or accreting suspended constituentsUtilizing organic agent Utilizing aluminum, calcium, or iron containing agent Utilizing exchange or sorbent material associated with inert material Anions Heavy metal Seeding In situ Including organic agent Including organic agent Including geographic feature (e.g., drainage ditch, septic, pond) Phosphorus containing Cumulative poison Heavy metal Chromium Mercury Chemical Chemical WATER-SOFTENING OR PURIFYING OR SCALE-INHIBITING AGENTS Packages or heterogeneous arrangements Water-insoluble base-exchange agent containing With inorganic matter other than alkali-metal hydroxides and carbonates and water And rare earth metal (Sc, Y or Lanthanide)containing And Group III or rare earth metal (Al, Ga, In, Tl, Sc, Y) or Lanthanide containing Clay Acid treating And metal, metal oxide, or metal hydroxide |
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