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| Solubility and Modeling of Sodium Aluminosilicate in NaOH-NaAI(OH)(4) Solutions and Its Application to Desilication | |
| Alternative Title | Ind. Eng. Chem. Res. |
| Zeng, Lanmu; Li, Zhibao | |
| 2012-11-21 | |
| Source Publication | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
 |
| ISSN | 0888-5885 |
| Volume | 51Issue:46Pages:15193-15206 |
| Abstract | The solubility of :sodium aluminosilicate (sodalite), a major desilication product (DSP) in the Bayer process, in NaOH and NaOH-NaAl(OH)(4) solutions was determined and modeled from 3.03.2 to 34 4 K Sodium aluminosilicate was synthesized in a batch crystallizer and the effect of temperature, solution concentrations, and aging time Was investigated. Solubility was found to increase with increasing NaOH concentration while the solubility sharply decreases with the addition of Al(OH)(3), reaches a minimum at about 0.8 mol.L-1, and then increases A mixed-solvent electrolyte (MSE) model for the solubility of sodalite was developed with the help of the OLI platform via regression to obtain the model parameters. In addition, the desilication kinetics of NaOH-NaAl(OH)(4) solutions by using sodalite as seeds was studied experimentally and modeled with the aid of a second order kinetic model. The activation energy of desilication over the temperature range 323.2-363.2 K was found to be 92 +/- 14 kJ.mol(-1). Under the optimal operation conditions, 80% silica was removed after 2 h.; The solubility of :sodium aluminosilicate (sodalite), a major desilication product (DSP) in the Bayer process, in NaOH and NaOH-NaAl(OH)(4) solutions was determined and modeled from 3.03.2 to 34 4 K Sodium aluminosilicate was synthesized in a batch crystallizer and the effect of temperature, solution concentrations, and aging time Was investigated. Solubility was found to increase with increasing NaOH concentration while the solubility sharply decreases with the addition of Al(OH)(3), reaches a minimum at about 0.8 mol.L-1, and then increases A mixed-solvent electrolyte (MSE) model for the solubility of sodalite was developed with the help of the OLI platform via regression to obtain the model parameters. In addition, the desilication kinetics of NaOH-NaAl(OH)(4) solutions by using sodalite as seeds was studied experimentally and modeled with the aid of a second order kinetic model. The activation energy of desilication over the temperature range 323.2-363.2 K was found to be 92 +/- 14 kJ.mol(-1). Under the optimal operation conditions, 80% silica was removed after 2 h. |
| Keyword | Spent Bayer Liquor Alkaline-solutions Diasporic-bauxite Zeolite-a Sodalite Cancrinite Speciation Kinetics Ions |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology |
| DOI | 10.1021/ie301590r |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | SPENT BAYER LIQUOR ; ALKALINE-SOLUTIONS ; DIASPORIC-BAUXITE ; ZEOLITE-A ; SODALITE ; CANCRINITE ; SPECIATION ; KINETICS ; IONS |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| WOS ID | WOS:000311325200028 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/6485 |
| 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 | Zeng, Lanmu,Li, Zhibao. Solubility and Modeling of Sodium Aluminosilicate in NaOH-NaAI(OH)(4) Solutions and Its Application to Desilication[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2012,51(46):15193-15206. |
| APA | Zeng, Lanmu,&Li, Zhibao.(2012).Solubility and Modeling of Sodium Aluminosilicate in NaOH-NaAI(OH)(4) Solutions and Its Application to Desilication.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,51(46),15193-15206. |
| MLA | Zeng, Lanmu,et al."Solubility and Modeling of Sodium Aluminosilicate in NaOH-NaAI(OH)(4) Solutions and Its Application to Desilication".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 51.46(2012):15193-15206. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Solubility and Model（2131KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text | |
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