Zhang Xinyue1; Ning Pengge2; Xu Weifeng2; Cao Hongbin2; Zhang Yi1
Source Publicationsciencechinachemistry
AbstractThis work presented the results of tungstic precipitation from Na_2WO_4-Na_2SO_4-H_2O system at 293.15 K, with which the Pitzer parameters of β_(Na_2WO_4)~((0)) and β_(Na_2WO_4)~((1)) were determined from Pitzer equation by regression. Thus the mean ionic activity coefficients of sodium tungstate were calculated. The obtained β_(Na_2WO_4)~((0)) and β_(Na_2WO_4)~((1)) were substituted as fixed values in extraction modeling from Na_2WO_4-H_2SO_4-H_2O 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.
Document Type期刊论文
Recommended Citation
GB/T 7714
Zhang Xinyue,Ning Pengge,Xu Weifeng,et al. modelingfortungsticprecipitationandextractionbasedonpitzerequation[J]. sciencechinachemistry,2016,59(4):497.
APA Zhang Xinyue,Ning Pengge,Xu Weifeng,Cao Hongbin,&Zhang Yi.(2016).modelingfortungsticprecipitationandextractionbasedonpitzerequation.sciencechinachemistry,59(4),497.
MLA Zhang Xinyue,et al."modelingfortungsticprecipitationandextractionbasedonpitzerequation".sciencechinachemistry 59.4(2016):497.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang Xinyue]'s Articles
[Ning Pengge]'s Articles
[Xu Weifeng]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang Xinyue]'s Articles
[Ning Pengge]'s Articles
[Xu Weifeng]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang Xinyue]'s Articles
[Ning Pengge]'s Articles
[Xu Weifeng]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.