Medical School Univ of Alberta, Fac of Med, Edmonton, Alb, Canada Graduated: 1986
Languages:
English Spanish
Description:
Dr. Leavitt graduated from the Univ of Alberta, Fac of Med, Edmonton, Alb, Canada in 1986. He works in Chico, CA and specializes in Emergency Medicine. Dr. Leavitt is affiliated with Enloe Medical Center.
Hani A. Abodishish - Aiken SC Douglas J. Leavitt - Ogden UT
Assignee:
Westinghouse Electric Corp. - Pittsburgh PA
International Classification:
B01D 1100
US Classification:
210634
Abstract:
A scrub solution is made up for use in starting up a hafnium liquid-liquid extraction system. An aqueous zirconium oxychloride-containing solution is contacted with methyl isobutyl ketone containing less than 1 Molar thiocyanic acid. The aqueous solution is maintained at a chloride concentration of 1. 6 to 3. 5 Normal (as HCl) by addition of concentrated hydrochloric acid. Ammonium thiocyanate is added to the acidified aqueous stream to produce thiocyanic acid. The high acidity of the aqueous solution drives the thiocyanic acid into the methyl isobutyl ketone without the chloride anions having a depressing affect on the transfer. The thiocyanic acid-containing MIBK may then be used as a scrubbing solvent to start up the hafnium extraction system.