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

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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, Dehua 1,2; Li, Huiquan 1; Wang, Chenye 1; Bao, Weijun 1
刊名	FLUID PHASE EQUILIBRIA
	2015-10-15
卷号	403 期号:OCT 页码:129-135
关键词	NH4Al(SO4)(2)center dot 12H(2)O H2SO4 Solubilities Electrolyte NRTL model
ISSN号	0378-3812
英文摘要	Solubilities 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.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Thermodynamics ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]	Thermodynamics ; Chemistry ; Engineering
关键词[WOS]	ALUMINUM SULFATE DODECAHYDRATE ; PHASE-EQUILIBRIA ; AQUEOUS-SOLUTIONS ; AMMONIUM-SULFATE ; FLY-ASH ; EXTRACTION ; ALUMS
收录类别	SCI
语种	英语
WOS记录号	WOS:000359174200017
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/19422]
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.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
推荐引用方式 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.