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| Chemical Modeling of Nesquehonite Solubility in Li plus Na + K + NH4 + Mg + Cl + H2O System with a Speciation-based Approach | |
| Alternative Title | Chin. J. Chem. Eng. |
| Wang Daoguang; Li Zhibao | |
| 2012-04-01 | |
| Source Publication | CHINESE JOURNAL OF CHEMICAL ENGINEERING
 |
| ISSN | 1004-9541 |
| Volume | 20Issue:2Pages:267-276 |
| Abstract | 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.; 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. |
| Keyword | Chemical Modeling Speciation Equilibrium Nesquehonite Solubility |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | 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 |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| WOS ID | WOS:000304292000009 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/6278 |
| Collection | 研究所（批量导入） |
| Affiliation | Chinese Acad Sci, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 三水碳酸镁在Li_Na_K十NH_省略_（551KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
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