Patents by Inventor Gert du Plessis

Gert du 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).

  • Method of purifying fischer-tropsch derived water
    Publication number: 20050131084
    Abstract: A process for the production of purified water from Fischer-Tropsch reaction water wherein the purified water is an aqueous stream having a COD of between 20 and 500 mg/l, a pH of between 6.0 and 9.
    Type: Application
    Filed: December 16, 2004
    Publication date: June 16, 2005
    Inventors: Luis Kohler, Gert du Plessis, Francois Toit, Edward Koper, Trevor Phillips, Janette Walt
  • Method of purifying fischer-tropsch derived water
    Publication number: 20050131083
    Abstract: A process for the production of highly purified water from Fischer-Tropsch reaction water, which process includes at least the steps of a primary treatment stage comprising biological treatment for removing at least a fraction of dissolved organic carbon from the Fischer-Tropsch reaction water to produce a primary water-enriched stream, a secondary treatment stage comprising solid-liquid separation for removing at least some solids from at least a portion of the primary water-enriched stream to produce a secondary water-enriched stream, and a tertiary treatment stage comprising a dissolved salt and organic removal step for removing at least some dissolved salts and organic constituents from at least a portion of the secondary water-enriched stream.
    Type: Application
    Filed: December 16, 2004
    Publication date: June 16, 2005
    Inventors: Luis Dancuart Kohler, Gert du Plessis, Francois du Toit, Edward Koper, Trevor Phillips, Janette Walt