Sodium to sodium carbonate conversion process

Details Sodium to sodium carbonate conversion process Sodium to sodium carbonate conversion process

1996-06-25

1997-10-14

Mai, Ngoclan

Hazardous or toxic waste destruction or containment

Destruction or containment of radioactive waste

Chemical conversion to a stable solid for disposal

423189, 423246, 423421, G21F 900

Patent

active

056782403

ABSTRACT:
A method of converting radioactive alkali metal into a low level disposable solid waste material. The radioactive alkali metal is atomized and introduced into an aqueous caustic solution having caustic present in the range of from about 20 wt % to about 70 wt % to convert the radioactive alkali metal to a radioactive alkali metal hydroxide. The aqueous caustic containing radioactive alkali metal hydroxide and CO.sub.2 are introduced into a thin film evaporator with the CO.sub.2 present in an amount greater than required to convert the alkali metal hydroxide to a radioactive alkali metal carbonate, and thereafter the radioactive alkali metal carbonate is separated from the thin film evaporator as a dry powder. Hydroxide solutions containing toxic metal hydroxide including one or more metal ions of Sb, As, Ba, Be, Cd, Cr, Pb, Hg, Ni, Se, Ag and T1 can be converted into a low level non-hazardous waste using the thin film evaporator of the invention.

REFERENCES:
patent: 3773902 (1973-11-01), Neumann
patent: 3819813 (1974-06-01), Jones, Jr. et al.
patent: 3842157 (1974-10-01), Neumann
patent: 3975503 (1976-08-01), Hauschild et al.
patent: 4895678 (1990-01-01), Ohtsuka et al.
patent: 5348689 (1994-09-01), Gay et al.
Herrmann et al., "Elemental Sodium to Sodium Carbonate Conversion at Argonne National Laboratory" Presentation at American Nuclear Society Meeting Jun. 25 thru 29th, 1995, 7 pages.

Affiliated with

Also associated with

Rating

Sodium to sodium carbonate conversion process does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sodium to sodium carbonate conversion process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sodium to sodium carbonate conversion process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1563411