Application of Pitzer theory to calculation of sulfate equilibrium concentration in CaSO4-Ca(OH)2-H2O system

被引：0
|
作者：
Peng, Xiao-Yu [1 ,2 ]
Wang, Yun-Yan [1 ]
Chai, Li-Yuan [1 ]
Shu, Yu-De [1 ]
机构：
[1] School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China
[2] Hunan Province Environmental Monitoring Centre, Changsha 410014, China
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2010年 / 41卷 / 03期
关键词：
Hydrated lime - C++ (programming language) - Industrial water treatment - Sulfur compounds;
D O I：
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中图分类号：
学科分类号：
摘要：
In order to provide some theoretical basis for the treatment and reutilization of sulfate contaminated industrial wastewater, Pitzer theory was adopted to calculate the equilibrium concentration of sulfate in CaSO4-Ca(OH)2-H2O system at different pH through C++ language programming, and the effect of Na+ on the equilibrium concentration of sulfate in this system was investigated. The results show that the equilibrium concentration of sulfate is minimal and invariant with the concentration of 0.0152 mol/L when pH is 3.0-10.0 and increases significantly when pH is higher than 12.0. The equilibrium concentration of sulfate increases with the addition of Na+ in the solution as the variation law of sulfate equilibrium concentration of the system is in agreement with that of without Na+ system.
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页码：859 / 864
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