Thermodynamic model for tungstic acid extraction from sodium tungstate in sulfuric acid medium by primary amine N1923 diluted in toluene
文献类型：期刊论文
| 作者 | Xu, Weifeng1,2; Ning, Pengge2,3; Cao, Hongbin2,3; Zhang, Yi2,3 |
| 刊名 | HYDROMETALLURGY
 |
| 出版日期 | 2014-08-01 |
| 卷号 | 147期号:AUG页码:170-177 |
| 关键词 | Thermodynamic model Extraction Tungsten Primary amine Pitzer model |
| ISSN号 | 0304-386X |
| 其他题名 | Hydrometallurgy |
| 中文摘要 | A thermodynamic model for the extraction of tungstic acid from sodium tungstate in sulfuric acid using the primary amine N1923 diluted in toluene has been developed. The liquid-liquid extraction equilibrium data were determined by performing a series of experiments at 293.15 K. The activity coefficients of the ions and molecules in the aqueous and organic phases were calculated using the Pitzer equations. Nonlinear regression, based on the balance equations of chemical, mass and charge equilibria and the experimental data, was used as the optimization method. Next, the thermodynamic equilibrium constant and the new Pitzer parameters for sodium tungstate electrolytes in the aqueous phase and the binary interactions between the species in the organic phase were obtained. The new model was used to predict the extraction efficiency from different initial conditions. Experiments were performed to verify the new model. The results indicated that the model could moderately predict this extraction system. Furthermore, the extraction reaction mechanism was investigated using the new model, and the scope of the new model is discussed. (C) 2014 Elsevier B.V. All rights reserved. |
| 英文摘要 | A thermodynamic model for the extraction of tungstic acid from sodium tungstate in sulfuric acid using the primary amine N1923 diluted in toluene has been developed. The liquid-liquid extraction equilibrium data were determined by performing a series of experiments at 293.15 K. The activity coefficients of the ions and molecules in the aqueous and organic phases were calculated using the Pitzer equations. Nonlinear regression, based on the balance equations of chemical, mass and charge equilibria and the experimental data, was used as the optimization method. Next, the thermodynamic equilibrium constant and the new Pitzer parameters for sodium tungstate electrolytes in the aqueous phase and the binary interactions between the species in the organic phase were obtained. The new model was used to predict the extraction efficiency from different initial conditions. Experiments were performed to verify the new model. The results indicated that the model could moderately predict this extraction system. Furthermore, the extraction reaction mechanism was investigated using the new model, and the scope of the new model is discussed. (C) 2014 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | N-BUTYL PHOSPHATE ; ACTIVATED CARBON ; MOLYBDENUM ; SEPARATION ; WATER ; EQUILIBRIA ; IMPURITIES ; MOLYBDATE ; SOLVENT ; NITRATE |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000340333100024 |
| 公开日期 | 2014-09-30 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/11577]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Tianjin Univ, Natl Engn Res Ctr Distillat Technol, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Res Ctr Proc Pollut Control, Beijing 100190, Peoples R China 3.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Weifeng,Ning, Pengge,Cao, Hongbin,et al. Thermodynamic model for tungstic acid extraction from sodium tungstate in sulfuric acid medium by primary amine N1923 diluted in toluene[J]. HYDROMETALLURGY,2014,147(AUG):170-177. |
| APA | Xu, Weifeng,Ning, Pengge,Cao, Hongbin,&Zhang, Yi.(2014).Thermodynamic model for tungstic acid extraction from sodium tungstate in sulfuric acid medium by primary amine N1923 diluted in toluene.HYDROMETALLURGY,147(AUG),170-177. |
| MLA | Xu, Weifeng,et al."Thermodynamic model for tungstic acid extraction from sodium tungstate in sulfuric acid medium by primary amine N1923 diluted in toluene".HYDROMETALLURGY 147.AUG(2014):170-177. |
入库方式： OAI收割
来源：过程工程研究所
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