Patents by Inventor Steven B. Peter

Steven B. Peter 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).

  • Tandem waste stream treatment for the removal of nitroaromatics and nitrophenolics
    Patent number: 5356539
    Abstract: A process for removing nitroaromatic and nitrophenolic compounds from an alkaline wastewater stream generated in a process for the nitration of aromatic compounds by the mixed acid technique, which comprises(a) adjusting the pH of the aqueous alkaline waste stream containing nitroaromatic and nitrophenolic compounds to a range from about 2 to 4.5,(b) contacting the acidic aqueous stream with sufficient hydrogen peroxide and ferrous ion under conditions to effect oxidation of the nitrophenolic compounds,(c) adjusting the acidic, oxidized aqueous waste stream having a reduced nitrophenolic content to about pH .gtoreq.4, and(d) contacting the aqueous waste stream with a carbon adsorbent.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: October 18, 1994
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Steven B. Peter, Keith B. Adams, Baldomero Casas, John E. Sawicki