Patents by Inventor Rohan POSTHUMUS

Rohan POSTHUMUS 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).

  • Mine drainage remediation using barium carbonate dispersed alkaline substrate
    Patent number: 10245626
    Abstract: The present invention relates to a treatment system having a barium carbonate (BaCO3) dispersed alkaline substrate (BDAS) for use in the remediation or at least partial remediation of mine drainage (MD) and/or environmental media contaminated with a source of MD. The invention utilizes chemical, biological and combined treatment systems remove high concentrations of sulfates, hardness, heavy metals and N-compounds, that may exist in the MD as well as high concentrations of alkalinity produced during the remediation process. The invention further extends to a process for treating MD and/or environmental media contaminated with MD and to an apparatus for use in this process.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: April 2, 2019
    Assignee: UNIVERSITY OF THE FREE STATE
    Inventors: Esta Van Heerden, Julio Hernandez Castillo, Alba Gomez, Rohan Posthumus, Walter George Van Der Hoven
  • Mine Drainage Remediation Using Barium Carbonate Dispersed Alkaline Substrate
    Publication number: 20170274431
    Abstract: The present invention relates to a treatment system having a barium carbonate (BaCO3) dispersed alkaline substrate (BDAS) for use in the remediation or at least partial remediation of mine drainage (MD) and/or environmental media contaminated with a source of MD. The invention utilizes chemical, biological and combined treatment systems remove high concentrations of sulfates, hardness, heavy metals and N-compounds, that may exist in the MD as well as high concentrations of alkalinity produced during the remediation process. The invention further extends to a process for treating MD and/or environmental media contaminated with MD and to an apparatus for use in this process.
    Type: Application
    Filed: September 4, 2015
    Publication date: September 28, 2017
    Inventors: Esta VAN HEERDEN, Julio Hernandez CASTILLO, Alba GOMEZ, Rohan POSTHUMUS, Walter George VAN DER HOVEN