Producing carbon-14 isotope from spent resin waste

Details Producing carbon-14 isotope from spent resin waste Producing carbon-14 isotope from spent resin waste

1991-02-21

1994-02-15

Miller, Edward A.

Chemistry of inorganic compounds

Radioactive

252626, 252630, 423437, C01B 3118, C01B 3120, C01F 1118

Patent

active

052864685

ABSTRACT:
A method for the recovery of carbon-14 (C-14) from a mixture of inert gas and carbon-12 (C-12), carbon-13 (C-13) and C-14 dioxides. The mixture is cooled to a temperature below the solidification point of carbon dioxide to obtain solid carbon dioxide. The solid carbon dioxide is volatilized to provide substantially pure carbon dioxide gas which is reduced to carbon monoxide gas by reaction with metal. The carbon monoxide gas is cooled to obtain liquefied carbon monoxide. A feed of the liquefied carbon monoxide is subjected to fractional distillation and a bottoms rich in C-14 monoxide and poor in C-12 monoxide is collected and a distillate poor in C-14 monoxide and rich in C-12 monoxide is removed. The bottoms are oxidized to carbon dioxide rich in C-14 dioxide which is absorbed in a metal hydroxide solution and a carbonate salt rich in C-14 is obtained.

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