Ca2+-CO32--Gly--H2O体系热力学分析

详细信息

刊出日期: 2017-06-25

Thermomechanical Analysis of Ca2+-CO32--Gly--H2O System

Publish Date: 25 June 2017

摘要: 根据碳酸钙在氨基乙酸盐体系(Gly--H2O体系)中的溶解热力学平衡方程建立了其溶解热力学模型,分别分析了298 K时体系中钙离子总浓度、游离钙离子浓度、游离氨基乙酸根离子浓度、游离碳酸根离子浓度、钙物种分布以及氨基乙酸根物种分布热力学结果.结果表明,在酸性氨基乙酸盐体系中(pH<7),碳酸钙溶解以酸浸作用为主,碳酸钙可以大量溶于酸性氨基乙酸盐体系中;在碱性氨基乙酸盐体系中(7
- CaCO3 /
- 热力学 /
- 氨基乙酸
Abstract: The thermodynamics model of dissolution was established according to the thermodynamic equilibrium equation of calcium carbonate dissolution in the glycine system (Gly--H2O system).The total concentration of calcium ions, free calcium ion concentration, free glycine ion concentration, free carbonate ion concentration, calcium species distribution, and glycine species distribution were analyzed at 298 K.The results showed that calcium carbonate could be dissolved in acidic glycine system (pH<7).The dissolution of calcium carbonate was mainly attributed to the acid leaching effect.In the alkaline glycine system (7