A New Approach for Predicting Density of Electrolyte Solution

化学工业与工程

Chemcial Industry and Engineering

2001, Vol. 18

Issue (1) :20-28 DOI:

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A New Approach for Predicting Density of Electrolyte Solution

LI Chun\|xi 1,SONG Hong\|yan 2 (1.College of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China; 2.Department of Applied Chemistry Beijing University of Chemical Technology,Beijing,100029,China)

(1.College of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China; 2.Department of Applied Chemistry Beijing University of Chemical Technology,Beijing,100029,China

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Abstract A new generalized model was proposed for predicting density of electrolyte solutions by using the principle of corresponding state.Taking CaCl\-2 solution as reference fluid,the quantitative relation between apparent molar volume of water and osmotic pressure of the solution was obtained.With this universal relation for all the electrolyte solution and the known ionic radill,densities of single or mixed electrolyte solutions in the whole concentration range and in the temperature range of 271\^15K～373\^15K can be predicted.The validity of the proposed model was investigated for 30 binary electrolyte solutions at 298\^15K,and for 11 single electrolyte solutions in the temperature range of 273\^15K～373\^15K.Using the optimized ionic radius being independent of temperature and concentration the AADs were found to be within 1%.This method is simple for use and the prediction accuracy is within the demand for industry design.

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Received 2001-01-15; published 2001-01-15

Cite this article:

LI Chun\|xi 1,SONG Hong\|yan 2 .A New Approach for Predicting Density of Electrolyte Solution[J] Chemcial Industry and Engineering, 2001,V18(1): 20-28

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