Chemical Modeling of Nesquehonite Solubility in Li plus Na + K + NH4 + Mg + Cl + H2O System with a Speciation-based Approach
文献类型：期刊论文
| 作者 | Wang Daoguang; Li Zhibao |
| 刊名 | CHINESE JOURNAL OF CHEMICAL ENGINEERING
 |
| 出版日期 | 2012-04-01 |
| 卷号 | 20期号:2页码:267-276 |
| 关键词 | chemical modeling speciation equilibrium nesquehonite solubility |
| ISSN号 | 1004-9541 |
| 其他题名 | Chin. J. Chem. Eng. |
| 中文摘要 | A chemical model, based on Pitzer activity coefficient model, is developed with a speciation approach to describe the solubility and chemistry of nesquehonite in concentrated chloride solutions. The chemical equilibrium constants for nesquehonite and aqueous species, i.e. MgCO30, MgHCO3+, and MgOH+, are precisely calculated as a function of temperature according to the Van't Hoff equation by use of standard Gibbs free energy, standard formation enthalpy and heat capacity. The most recent solubility data are regressed to obtain new Pitzer parameters with good agreement. The predictive ability of the new model is improved significantly in comparison with previous models. The behavior of speciation chemistry for nesquehonite in various chloride media is explained through this modeling work on the basis of the Mg/CO32- bearing species distribution, activity coefficient and pH changes. |
| 英文摘要 | A chemical model, based on Pitzer activity coefficient model, is developed with a speciation approach to describe the solubility and chemistry of nesquehonite in concentrated chloride solutions. The chemical equilibrium constants for nesquehonite and aqueous species, i.e. MgCO30, MgHCO3+, and MgOH+, are precisely calculated as a function of temperature according to the Van't Hoff equation by use of standard Gibbs free energy, standard formation enthalpy and heat capacity. The most recent solubility data are regressed to obtain new Pitzer parameters with good agreement. The predictive ability of the new model is improved significantly in comparison with previous models. The behavior of speciation chemistry for nesquehonite in various chloride media is explained through this modeling work on the basis of the Mg/CO32- bearing species distribution, activity coefficient and pH changes. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | MOLAL THERMODYNAMIC PROPERTIES ; MINERAL SOLUBILITIES ; NA-K-MG-CA-H-CL-SO4-OH-HCO3-CO3-CO2-H2O SYSTEM ; LOW-TEMPERATURES ; NATURAL-WATERS ; CARBONIC-ACID ; DOUBLE SALTS ; STABILITY ; 25-DEGREES-C ; PREDICTION |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000304292000009 |
| 公开日期 | 2013-11-28 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/6278]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | Chinese Acad Sci, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Daoguang,Li Zhibao. Chemical Modeling of Nesquehonite Solubility in Li plus Na + K + NH4 + Mg + Cl + H2O System with a Speciation-based Approach[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2012,20(2):267-276. |
| APA | Wang Daoguang,&Li Zhibao.(2012).Chemical Modeling of Nesquehonite Solubility in Li plus Na + K + NH4 + Mg + Cl + H2O System with a Speciation-based Approach.CHINESE JOURNAL OF CHEMICAL ENGINEERING,20(2),267-276. |
| MLA | Wang Daoguang,et al."Chemical Modeling of Nesquehonite Solubility in Li plus Na + K + NH4 + Mg + Cl + H2O System with a Speciation-based Approach".CHINESE JOURNAL OF CHEMICAL ENGINEERING 20.2(2012):267-276. |
入库方式： OAI收割
来源：过程工程研究所
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