Patents by Inventor Ann Nahed Bersbach

Ann Nahed Bersbach 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: 20030136742
    Abstract: The presented invention discloses a process to remove low or high concentrations of common or complexed heavy metals from aqueous solutions as well as oily solutions. The process uses a product (8856A), which is a mixture of 80% phosphoric acid (75-80%) and 20% aluminum sulfate (48%). The percentage of aluminum sulfate in 8856A is very critical in providing optimum solid-liquid separation in the settling stage and removing any excess phosphates from the discharge. Heavy metals such as iron, copper, nickel, zinc, chromium and lead are precipitated as metal phosphates. The process is capable of removing all of the metal in the solution because it discloses a longer detention time of two to four hours, which provides sufficient time to breakdown any complexing agents preventing precipitation of the metal. According to the presented invention, metal concentrations in the treated wastewater are decreased to levels below the detection limits.
    Type: Application
    Filed: January 3, 2003
    Publication date: July 24, 2003
    Inventor: Ann Nahed Bersbach