The system NaCl-CaCl[sub 2]-H[sub 2]O; 2: Densities for ionic strengths of 0. 1--19. 2 mol[center dot]kg[sup [minus]1] at 298. 15 and 308. 15 K and at 0. 1 MPa

Journal Article · Mon Jan 01 00:00:00 EST 1990 · Journal of Chemical and Engineering Data; (United States)

DOI:https://doi.org/10.1021/je00061a022· OSTI ID:6954441

Oakes, C S; Bodnar, R J ^[1]; Simonson, J M ^[2]

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1. Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Dept. of Geological Sciences
2. Oak Ridge National Lab., TN (United States). Chemistry Division

Data on the physical properties of the ternary system NaCl-CaCl[sub 2]-H[sub 2]O are of particular importance in the processing and disposal of brines produced from industrial processes, chemical manufacture, and petroleum and geothermal reservoirs. Densities for ternary solutions in the system NaCl-CaCl[sub 2]-H[sub 2]O were measured with a vibrating-tube densimeter at 298.15 [+-] 0.09 and 308.15 [+-] 0.03 K and 0.1 MPa and over a range of ionic strengths from 0.1 to 19.2 mol[center dot]kg[sup [minus]1]. The present results are in excellent agreement with previously published data for the NaCl-H[sub 2]O binary and are in very good agreement with the more precise of the available data for the CaCl[sub 2]-H[sub 2]O binary at 298.15 K. Very large discrepancies between the results of the three most recent reports of densities for the CaCl[sub 2]-H[sub 2]O system at 308.15 K are resolved here, improving both the accuracy and precision for this system. Most significantly, the results reported here substantially expand the volumetric data base for ternary solutions. On the basis of the results of this study, most of the previously reported 308.15 K density data in the ternary system appear to contain large errors. The authors have evaluated the data within the framework of the Pitzer formalism and obtain new values for the ion interaction and mixing parameters for this ternary system. In addition to the parameters determined from the binary end-member solutions, it was found that only [theta][sub NaCa][sup v] was needed to represent the ternary results.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6954441
• Journal Information: Journal of Chemical and Engineering Data; (United States), Vol. 35:3; ISSN 0021-9568
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
02 PETROLEUM
15 GEOTHERMAL ENERGY
BRINES
DENSITY
CALCIUM CHLORIDES
SODIUM CHLORIDES
CONCENTRATION RATIO
EXPERIMENTAL DATA
THERMODYNAMIC PROPERTIES
WASTE DISPOSAL
WASTE PROCESSING
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM HALIDES
CHLORIDES
CHLORINE COMPOUNDS
DATA
HALIDES
HALOGEN COMPOUNDS
INFORMATION
MANAGEMENT
NUMERICAL DATA
PHYSICAL PROPERTIES
PROCESSING
SODIUM COMPOUNDS
WASTE MANAGEMENT
400201* - Chemical & Physicochemical Properties
020800 - Petroleum- Waste Management
154000 - Geothermal Energy- Waste Management- (1990-)