The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 2005
Filed:
Jan. 17, 2003
Scott J. Blonigen, Hilliard, OH (US);
Alex G. Fassbender, West Richland, WA (US);
Robert D. Litt, Westerville, OH (US);
Bruce F. Monzyk, Delaware, OH (US);
Richelle Neff, San Antonio, TX (US);
Scott J. Blonigen, Hilliard, OH (US);
Alex G. Fassbender, West Richland, WA (US);
Robert D. Litt, Westerville, OH (US);
Bruce F. Monzyk, Delaware, OH (US);
Richelle Neff, San Antonio, TX (US);
Battelle Memorial Institute, Columbus, OH (US);
Abstract
Apparatus, materials, and methods for removing ammonia from fluid using metal hydroxides (e.g. zinc hydroxide) and metal cation loaded media (e.g. zinc loaded ion exchange resins); the metal hydroxides and metal cation loaded media may be regenerated with a weak acid (pKbetween 3 and 7). Alternatively, ammonia is removed from fluids by using HSOand ZnSOand metal cation loaded media; the metal cation loaded media may be regenerated with HSOand ZnSO; the ammonia containing HSOand HSOmay be concentrated as necessary to form (NH)SO.ZnSO.6HO (ammonium zinc sulfate hexahydrate) crystals. These crystals are removed from the mother liquor and heated to temperatures exceeding 200° C. releasing NHand HO vapor upon the decomposition of the crystals.