Patents by Inventor John F. Horst

John F. Horst has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for biogeochemical stabilization of chromate-impacted solids
    Patent number: 8703078
    Abstract: The invention relates to a system and method for the substantially permanent biogeochemical stabilization of solids impacted with hexavalent chromium/Cr(VI), including chromite ore processing residue (“COPR”). The invention comprises a novel treatment method of adding amendment(s) to COPR or other chromate impacted solids for the purpose of (1) weathering COPR minerals (when present) to convert the minerals that control alkalinity of the COPR to non-alkaline forms and liberate incorporated hexavalent chromium (Cr(VI)) in the process; (2) providing a chemical reductant (ferrous iron) to rapidly and permanently reduce the available Cr(VI) to trivalent form (Cr(III)); and/or (3) supporting longer-term biogeochemical Cr(VI) reduction enhanced by recycling of the chemical reductant, ultimately rendering the material non-hazardous as measured by acceptable methods.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: April 22, 2014
    Assignee: ARCADIS Corporate Services, Inc.
    Inventors: Jeff B. Gillow, John F. Horst, Suthan S. Suthersan
  • System and Method For Biogeochemical Stabilization of Chromate-Impacted Solids, Including Chromite Ore Processing Residue (COPR)
    Publication number: 20110171723
    Abstract: The invention relates to a system and method for the substantially permanent biogeochemical stabilization of solids impacted with hexavalent chromium/Cr(VI), including chromite ore processing residue (“COPR”). The invention comprises a novel treatment method of adding amendment(s) to COPR or other chromate impacted solids for the purpose of (1) weathering COPR minerals (when present) to convert the minerals that control alkalinity of the COPR to non-alkaline forms and liberate incorporated hexavalent chromium (Cr(VI)) in the process; (2) providing a chemical reductant (ferrous iron) to rapidly and permanently reduce the available Cr(VI) to trivalent form (Cr(III)); and/or (3) supporting longer-term biogeochemical Cr(VI) reduction enhanced by recycling of the chemical reductant, ultimately rendering the material non-hazardous as measured by acceptable methods.
    Type: Application
    Filed: January 13, 2011
    Publication date: July 14, 2011
    Applicant: ARCADIS Corporate Services, Inc.
    Inventors: Jeff Gillow, John F. Horst, Suthan S. Suthersan
  • MINERAL HARDPAN FORMATION FOR STABILIZATION OF ACID- AND SULFATE-GENERATING TAILINGS
    Publication number: 20090311048
    Abstract: The invention provides methods of stabilizing mine tailing through the formation of solid evaporate mineral surface hardpan thereby stabilizing mine tailings and decreasing environmental contamination surrounding a tailings impoundment.
    Type: Application
    Filed: June 3, 2009
    Publication date: December 17, 2009
    Inventors: John F. Horst, Jeff Gillow, Suthan S. Suthersan
  • IN-SITU PRECIPITATION THROUGH MICROBIALLY MEDIATED IRON DISTRIBUTION AND IRON OXYHYDROXIDE FORMATION
    Publication number: 20090308816
    Abstract: The invention provides methods of precipitating metals from groundwater in a form that will remain stable under the aerobic conditions typical of most aquifers eliminating secondary water quality issues associated with reducing/anaerobic precipitation technologies.
    Type: Application
    Filed: June 3, 2009
    Publication date: December 17, 2009
    Inventors: John F. Horst, Jeff Gillow, Suthan S. Suthersan