Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (3): 20210727.doi: 10.7503/cjcu20210727

• Physical Chemistry • Previous Articles     Next Articles

Molecular Simulation of the Osmotic Pressures for LiCl-NaCl-KCl-H2O Solution System

CHEN Hanxiang1,2,3, BIAN Shaoju1,2, HU Bin1,2(), LI Wu1,2   

  1. 1.Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resource,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining 810008,China
    2.Qinghai Provincial Key Laboratory of Resources and Chemistry of Salt Lakes,Xining 810008,China
    3.University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2021-10-19 Online:2022-03-10 Published:2022-01-07
  • Contact: HU Bin E-mail:hubin@isl.ac.cn
  • Supported by:
    the International Partnership Program of Chinese Academy of Sciences(122363KYSB20190033);the Natural Science Foundation of Qinghai Province, China(2019-ZJ-958Q)

Abstract:

Salt Lake Brines contain large amount of lithium and potassium resources. Developing models and methods that predicts the osmotic pressures of brines shows significance in utilizing salt lake resources. Molecular dynamics(MD) technology equipped with osmotic pressure in aqueous solutions(OPAS) method were applied to study the prediction of osmotic pressures of LiCl-NaCl-KCl-H2O solution system. The computed results were compared with experimental and Pitzer model calculated data, and the data includes osmotic pressures of solutions of the same type and different concentrations and of the same concentration and different types. The results show that this approach is capable to calculated the osmotic pressures quantitively and semi-qualitatively for complex mixture systems.

Key words: Mixed salt solution system, Osmotic pressure, Molecular dynamics

CLC Number: 

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