Patents by Inventor Gert Plessis

Gert Plessis 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).

  • Publication number: 20050139555
    Abstract: A process for the production of highly purified water 38 from Fischer-Tropsch reaction water 12, includes at least the steps of a primary treatment stage comprising an equilibrium staged separation process 14 having at least one stage for removing at least a fraction of non-acid oxygenated hydrocarbons from the Fischer-Tropsch reaction water 12 to produce a primary water-enriched stream 16, a secondary treatment stage comprising at least one membrane separation process 28 for removing at least some suspended solids and acidic oxygenated hydrocarbons from at least a portion of the primary water-enriched stream 16 to produce a secondary water-enriched stream 34 and a tertiary treatment stage comprising a dissolved salt and organic removal stage 36 for removing at least some dissolved salts and organic constituents from at least a portion of the secondary water-enriched stream 34.
    Type: Application
    Filed: December 17, 2004
    Publication date: June 30, 2005
    Inventors: Luis Pablo Dancuart Kohler, Gert Plessis, Francois Toit, Edward Koper, Trevor Phillips, Janette Walt
  • Publication number: 20050131085
    Abstract: A process for the production of highly purified water from Fischer-Tropsch reaction water includes distillation as a primary treatment stage, evaporation as a secondary treatment stage, aerobic treatment as a tertiary treatment stage, solid-liquid separation as a quartic treatment stage, and membrane separation as a final treatment stage.
    Type: Application
    Filed: December 16, 2004
    Publication date: June 16, 2005
    Inventors: Luis Kohler, Gert Plessis, Francois Toit, Edward Koper, Trevor Phillips, Janette Walt
  • Publication number: 20050131086
    Abstract: A process for the production of highly purified water 44 from Fischer-Tropsch reaction water 12 includes distillation 14 as a primary treatment stage, biological treatment including anaerobic digestion 20 and aerobic digestion 22 as a secondary treatment stage, solid-liquid separation 32 as a tertiary treatment stage and a dissolved salt and organic removal stage 40 as final treatment stage.
    Type: Application
    Filed: December 16, 2004
    Publication date: June 16, 2005
    Inventors: Luis Dancuart Kohler, Gert Plessis, Francois Toit, Edward Koper, Trevor Phillips, Janette Walt