Pfizer Corporation

Battelle Memorial Institute

Scott J Blonigen

Bruce F Monzyk

Robert Dwayne Litt

Chad M Cucksey

Timothy M Werner

David Kilanowski

Ted L Tewksbury

Fred H Weber

Hamish A I McArthur

Harold N Conkle

Richelle Neff

Joseph E Schultz

Alex G Fassbender

Alexander G Fassbender

Richelle L Neff

A vaccine for in ovo vaccination against avian coccidiosis produced by a method including obtaining the coccidial oocysts from a fecal suspension, homogenizing the fecal suspension, separating the oocysts from the fecal debris by either salt flotation using sodium sulfate or gas flotation using air, sporulating the oocysts using hydrogen peroxide and air sparging, bleaching the sporulated oocysts, washing the bleached oocysts, concentrating the sterile washed oocysts and combining the concentrates of various species of coccidial oocysts, and producing a vaccine. The method in whole or in part can be applied to other kinds of encysted protozoa to produce vaccines for various types of animals.

Method for the purification, recovery, and sporulation of cysts and oocysts

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&#xb0; C. releasing NHand HO vapor upon the decomposition of the crystals.

Apparatus and method for ammonia removal from waste streams

Methods for direct reduction of ammonia from waste streams by the steps of reacting an aqueous ammonia containing waste stream with a solution of a strong acid and a metal salt, wherein the cation in said metal salt of said solution is selected from the group consisting of Ag, Cd, Co, Cr, Cu, Hg, Ni, Pd, Zn; and wherein an ammonium-double salt is formed with said metal salt in an ammonia depleted waste stream; and treating said depleted waste stream to crystallize an ammonium-metal double salt therefrom.

Method for ammonia removal from waste streams

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Hilliard, OH, United States of America

Scott J Blonigen