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U.S. Department of Energy
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Alkaline solution absorption of carbon dioxide method and apparatus

Patent ·
OSTI ID:10178952
Disclosed is a method for measuring the concentration of hydroxides (or pH) in alkaline solutions, using the tendency of hydroxides to adsorb CO{sub 2}. The method comprises passing CO{sub 2} over the surface of an alkaline solution in a remote tank before and after measurements of the CO{sub 2} concentration. Comparison of the measurements yields the adsorption fraction from which the hydroxide concentration can be calculated using a correlation of hydroxide or pH to adsorption fraction. A schematic is given of a process system according to a preferred embodiment of the invention. 2 figs.
Research Organization:
Westinghouse Savannah River Co., Aiken, SC (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
AC09-89SR18035
Assignee:
Dept. of Energy
Patent Number(s):
PATENTS-US--A7754840
Application Number:
ON: DE93019321; PAN: 7-754,840
OSTI ID:
10178952
Country of Publication:
United States
Language:
English