Deliquescence of NaCl-NaNO3, KNO3-NaNO3, and NaCl-KNO3 Salt Mixtures From 90 to 120?C

Journal Article · Wed Oct 20 04:00:00 EDT 2004 · Geochemical Transactions, vol. 6, N/A, April 11, 2005, pp. 1-19

OSTI ID:936468

Carroll, S A; Craig, L; Wolery, T J

We conducted reversed deliquescence experiments in saturated NaCl-NaNO{sub 3}-H{sub 2}O, KNO{sub 3}-NaNO{sub 3}-H{sub 2}O, and NaCl-KNO{sub 3}-H{sub 2}O systems from 90 to 120 C as a function of relative humidity and solution composition. NaCl, NaNO{sub 3}, and KNO{sub 3} represent members of dust salt assemblages that are likely to deliquesce and form concentrated brines on high-level radioactive waste package surfaces in a repository environment at Yucca Mountain, NV, USA. Discrepancy between model prediction and experimental code can be as high as 8% for relative humidity and 50% for dissolved ion concentration. The discrepancy is attributed primarily to the use of 25 C models for Cl-NO{sub 3} and K-NO{sub 3} ion interactions in the current Yucca Mountain Project high-temperature Pitzer model to describe the non-ideal behavior of these highly concentrated solutions.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 936468
• Report Number(s): UCRL-JRNL-207414
• Journal Information: Geochemical Transactions, vol. 6, N/A, April 11, 2005, pp. 1-19, Journal Name: Geochemical Transactions, vol. 6, N/A, April 11, 2005, pp. 1-19 Vol. 6
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
58 GEOSCIENCES
BRINES
DUSTS
FORECASTING
HIGH-LEVEL RADIOACTIVE WASTES
HUMIDITY
MIXTURES
YUCCA MOUNTAIN