Chemistry: physical processes – Physical processes – Crystallization
Patent
1981-04-30
1984-03-06
Sebastian, Leland A.
Chemistry: physical processes
Physical processes
Crystallization
252631, 376328, 376904, 423283, B01D 902, C01B 3510
Patent
active
044351844
ABSTRACT:
A waste-water concentrate containing boric acid together with chemical residues and radionuclides, especially from a nuclear power plant, is treated to recovering boric acid which can be recycled to the plant. According to the invention, the practically neutral solution is acidified with an acid selected from the group which consists of sulfuric acid, hydrochloric acid, nitric acid and acetic acid to precipitate the boric acid which is separated from the concentrate and subjected to at least one recrystallization step. The boric acid thus obtained is of comparatively high purity.
REFERENCES:
patent: 2089406 (1937-08-01), Newman
patent: 2113248 (1938-04-01), Berg
patent: 3378450 (1968-04-01), Gramer et al.
patent: 3380889 (1968-04-01), Loose
patent: 4287163 (1981-09-01), Garrett et al.
Lewis, College Chemistry, Barnes and Noble Books, New York, 9th Ed., 1971, pp. 22 and 23.
The Condensed Chemical Dictionary, 9th Ed., 1977, Van Nostrand Reinhold Co., New York, p. 121.
Ambros Rainer
Brenner Norbert
Paffrath Gottfried
Schroeder Heinrich J.
Dubno Herbert
Rheinisch-Westfalisches Elektrizitatswerk AG
Ross Karl F.
Sebastian Leland A.
LandOfFree
Method of recovering boric acid from waste-water concentrates of does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of recovering boric acid from waste-water concentrates of, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of recovering boric acid from waste-water concentrates of will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-739794