Patents by Inventor Petrus Johannes Van Staden

Petrus Johannes Van Staden 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).

  • SIMPLIFIED SULPHATE REMOVAL FOR EFFLUENT TREATMENT
    Publication number: 20220332620
    Abstract: A method of treating a sulphate-bearing stream which includes the steps of hydrolysing aluminium sulphate to produce a chemically-reactive aluminium trihydroxide and sulphuric acid, adding lime to immobilize the sulphuric acid as gypsum and using the aluminium trihydroxide to remove sulphate from the sulphate-bearing stream without interference of sulphate derived from the aluminium sulphate used as an aluminium source in the hydrolysis step.
    Type: Application
    Filed: September 16, 2020
    Publication date: October 20, 2022
    Inventors: Tshamano Netshikhudini, Petrus Johannes Van Staden