Robert W Leibfried Deceased2705 San Marco Pl, Tampa, FL 33619
Robert Leibfried Phones & Addresses
2705 San Marco Pl, Tampa, FL 33619 813-6212209
Brandon, FL
Valrico, FL
Riverview, FL
Mentions for Robert W Leibfried
Publications & IP owners
Us Patents
Regeneration Of Activated Carbon
US Patent:
4407725, Oct 4, 1983
Filed:
Nov 12, 1981
Appl. No.:
6/320624
Inventors:
Hanceford L. Allen - Bartow FL
William W. Berry - Lakeland FL
Robert W. Leibfried - Tampa FL
William W. Berry - Lakeland FL
Robert W. Leibfried - Tampa FL
Assignee:
International Minerals & Chemical Corp. - Terre Haute IN
International Classification:
B01J 2034
B01J 2020
C01B 2516
B01J 2020
C01B 2516
US Classification:
502 25
Abstract:
Spent activated carbon previously used to remove humate-type organic impurities from an aqueous inorganic acid solution is regenerated by a specific chemical regeneration process. According to this process, the spent carbon is subjected to the following treatments: (1) a first water wash, (2) a caustic wash in which at least 1. 5% free caustic is maintained, (3) a warm and preferably hot water wash, and (4) an optional periodic acid wash. The process is particularly applicable to regenerating activated carbon used to remove humates from wet process phosphoric acid.
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