According to the principles of simultaneous equilibrium and electronic charge neutrality, the thermodynamics of Zn(II)-NaOH-H2O system was studied in this paper. Varying the concentration of sodium hydroxide, in range of 0-400 g/L, the distribution law of all zinc species and the mathematical model of equilibrium concentration of zinc in the system were obtained. The relative errors between theoretic calculation and the experimental values of total concentration of zinc were analyzed, and the absolute average error is only 0.129 8%. The mathematical model and the thermodynamic data are believable.
thermodynamicsZn(II)-NaOH-H2Ozinc equilibrium
LIU Qing、ZHAO You-cai、ZHAO Guo-dong
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School of Urban Construction, University of South China, Hengyang 421001, Hunan,P. R. China
The State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, P. R. China
School of Nuclear Resource and Nuclear Fuel Engineering, University of South China, Hengyang 421001, P. R. China
Doctoral Research Foundation of University of South ChinaScience and Technology Planning Project of Hunan Province
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