Modeling for tungstic precipitation and extraction based on Pitzer equation
文献类型：期刊论文
| 作者 | Zhang, Xinyue1,2,3; Ning, Pengge2; Xu, Weifeng2; Cao, Hongbin2; Zhang, Yi1,2,3 |
| 刊名 | SCIENCE CHINA-CHEMISTRY
 |
| 出版日期 | 2016-04-01 |
| 卷号 | 59期号:4页码:497-504 |
| 关键词 | tungstic precipitation Pitzer parameter activity coefficient extraction |
| ISSN号 | 1674-7291 |
| 英文摘要 | This work presented the results of tungstic precipitation from Na2WO4-Na2SO4-H2O system at 293.15 K, with which the Pitzer parameters of and were determined from Pitzer equation by regression. Thus the mean ionic activity coefficients of sodium tungstate were calculated. The obtained and were substituted as fixed values in extraction modeling from Na2WO4-H2SO4-H2O system by primary amine (N1923) in toluene as diluent. Meanwhile the activity coefficient expressions in organic phase were varied based on Pitzer theory that the interaction term for the solvent should not be included. The Pitzer parameters for organic phase were re-regressed in order to make the model more accurate. The average absolute relative deviation (AARD) for calculated and experimental molality of WO (4) (2-) in aqueous phase was 5.24%. The results showed that the model can not only correlate but also predict the liquid-liquid equilibrium (LLE) data. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Multidisciplinary |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | OSMOTIC COEFFICIENTS ; ELECTROLYTE SYSTEMS ; SODIUM TUNGSTATE ; PART I ; THERMODYNAMICS ; SOLVENT ; TOLUENE ; SINGLE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000373688500019 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/20983]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Tianjin Univ, Sch Chem Engn & Technol, Natl Engn Res Ctr Distillat Technol, Tianjin 300072, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Res Ctr Proc Pollut Control, Beijing 100190, Peoples R China 3.Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Xinyue,Ning, Pengge,Xu, Weifeng,et al. Modeling for tungstic precipitation and extraction based on Pitzer equation[J]. SCIENCE CHINA-CHEMISTRY,2016,59(4):497-504. |
| APA | Zhang, Xinyue,Ning, Pengge,Xu, Weifeng,Cao, Hongbin,&Zhang, Yi.(2016).Modeling for tungstic precipitation and extraction based on Pitzer equation.SCIENCE CHINA-CHEMISTRY,59(4),497-504. |
| MLA | Zhang, Xinyue,et al."Modeling for tungstic precipitation and extraction based on Pitzer equation".SCIENCE CHINA-CHEMISTRY 59.4(2016):497-504. |
入库方式： OAI收割
来源：过程工程研究所
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