Method of recovering boric acid from waste water concentrates of nuclear plants

Patent · Tue Mar 06 04:00:00 EST 1984

OSTI ID:6504123

Schroeder, H J; Ambros, R; Brenner, N; Paffrath, G

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.

• Assignee: Rheinisch-Westfalisches Elektrizitatswerk AG (Germany, Federal Republic of)
• Patent Number(s): US 4435184
• OSTI ID: 6504123
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220503* -- Nuclear Reactor Technology-- Environmental Aspects-- Chemical & Thermal Effluents
ACETIC ACID
ACIDIFICATION
BORIC ACID
CARBOXYLIC ACIDS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
ISOTOPES
LIQUID WASTES
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
MONOCARBOXYLIC ACIDS
NITRIC ACID
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POWER PLANTS
PRECIPITATION
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE PROCESSING
RADIOACTIVE WASTES
RADIOISOTOPES
RECOVERY
RECRYSTALLIZATION
RECYCLING
SEPARATION PROCESSES
SULFURIC ACID
THERMAL POWER PLANTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE WATER
WASTES
WATER
WATER TREATMENT