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Determination and modeling of the solubilities of NH4Al(SO4)(2)center dot 12H(2)O in the NH4+-Al3+-H3O+-HSO4--SO42--H2O system at different H2SO4 molalities and temperatures
Xu, Dehua1,2; Li, Huiquan1; Wang, Chenye1; Bao, Weijun1
2015-10-15
Source PublicationFLUID PHASE EQUILIBRIA
ISSN0378-3812
Volume403Issue:OCTPages:129-135
AbstractSolubilities of NH4Al(SO4)(2)center dot 12H(2)O in the NH4+-Al3+-H3O+-HSO4--SO42--H2O system, as well as the densities of the saturated solution were measured at the temperature range from 293.15 to 323.15 K and at the H2SO4 molalities varying from 0.6 to 3.6 mol/kg. At the same temperature and H2SO4 molality, the solubilities of (NH4)(2)SO4 sharply deceased with the addition of Al-2(SO4)(3) from 0 to a turning point at first and then slightly decreased. The electrolyte NRTL model embedded in Aspen plus was applied to model the solubilities of NH4Al(SO4)(2)center dot 12H(2)O in the NH4+-Al3+-H3O+-HSO4--SO42--H2O system. The model parameters were obtained via regressing the experimental results and the total relative average deviation of temperature is 1.04%, indicating that the calculation values are good with experiment data. With the newly obtained model parameters, the fundamental solubilities of NH4Al(SO4)(2)center dot 12H(2)O in the NH4+-Al3+-H3O+-HSO4--SO42--H2O system can be calculated precisely for its crystallization process. (C) 2015 Elsevier B.V. All rights reserved.
KeywordNh4al(So4)(2)Center Dot 12h(2)o H2so4 Solubilities Electrolyte Nrtl Model
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.fluid.2015.06.022
Indexed BySCI
Language英语
WOS KeywordALUMINUM SULFATE DODECAHYDRATE ; PHASE-EQUILIBRIA ; AQUEOUS-SOLUTIONS ; AMMONIUM-SULFATE ; FLY-ASH ; EXTRACTION ; ALUMS
WOS Research AreaThermodynamics ; Chemistry ; Engineering
WOS SubjectThermodynamics ; Chemistry, Physical ; Engineering, Chemical
WOS IDWOS:000359174200017
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19422
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Xu, Dehua,Li, Huiquan,Wang, Chenye,et al. Determination and modeling of the solubilities of NH4Al(SO4)(2)center dot 12H(2)O in the NH4+-Al3+-H3O+-HSO4--SO42--H2O system at different H2SO4 molalities and temperatures[J]. FLUID PHASE EQUILIBRIA,2015,403(OCT):129-135.
APA Xu, Dehua,Li, Huiquan,Wang, Chenye,&Bao, Weijun.(2015).Determination and modeling of the solubilities of NH4Al(SO4)(2)center dot 12H(2)O in the NH4+-Al3+-H3O+-HSO4--SO42--H2O system at different H2SO4 molalities and temperatures.FLUID PHASE EQUILIBRIA,403(OCT),129-135.
MLA Xu, Dehua,et al."Determination and modeling of the solubilities of NH4Al(SO4)(2)center dot 12H(2)O in the NH4+-Al3+-H3O+-HSO4--SO42--H2O system at different H2SO4 molalities and temperatures".FLUID PHASE EQUILIBRIA 403.OCT(2015):129-135.
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