CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Thermodynamics and nucleation mechanism of ammonium jarosite in sulfuric acid solution
Liu, PengFei1,2,3; Zhang, Yifei1,2; Wang, Li4; You, ShaoWei5; Bo, Jing1,2,3
2017-11-15
Source PublicationJOURNAL OF CRYSTAL GROWTH
ISSN0022-0248
Volume478Issue:NOVPages:52-57
Abstract

Jarosite process is one of the most widely used methods in removing Fe, but in which the nucleation mechanism of ammonium jarosite has not been reported. Solubilities of the ammonium jarosite crystals under different Fe-2(SO4)(3) and (NH4)(2)SO4 concentrations and under different temperatures were measured, and the experiments of induction periods were systematically investigated in different temperatures (348 k, 358 k and 368 k) and H2SO4 concentrations (9 g/L, 10.8 g/L and 12.6 g/L) by reaction crystallization process based on the thermodynamic equilibrium data. According to the model of classical nucleation theory, the interfacial tension and the surface entropy factors in different conditions were calculated as 1.21 mJ/m(2), 1.85 mJ/m(2), 1.71 mJ/m(2) and 1.51, 1.27, 1.17. The SEM photographs of (H3O, NH4) Fe-3(SO4)(2)(OH)(6) approved that the ammonium jarosite crystals were clearly grown by the two-dimensional nucleation mechanism and/or the spiral growth mechanism. But the growth mechanism of (H3O, NH4)Fe-3(SO4)(2)(OH)(6) had been determined to be the continuous growth by the surface entropy factor. (C) 2017 Published by Elsevier B.V.

KeywordAmmonium Jarosite Solid-liquid Equilibrium Induction Period Interfacial Energy
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.jcrysgro.2017.08.014
Indexed BySCI
Language英语
WOS KeywordSOLID-SOLUTION SERIES ; CRYSTAL-GROWTH MECHANISM ; INDUCTION PERIOD ; HYDROLYTIC PRECIPITATION ; SULFATE ; SYSTEM ; (NH4)FE-3(SO4)(2)(OH)(6) ; HYDROMETALLURGY ; AMMONIOJAROSITE ; CRYSTALLIZATION
WOS Research AreaCrystallography ; Materials Science ; Physics
WOS SubjectCrystallography ; Materials Science, Multidisciplinary ; Physics, Applied
Funding OrganizationNational High Technology Research and Development Program of China (863 Program)(2011AA060701) ; National Natural Science Foundation of China(21276258)
WOS IDWOS:000413647300009
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23376
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, Key Lab Green Proc & Engn, 1 Beiertiao, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Originwater, Beijing 101407, Peoples R China
5.Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Liu, PengFei,Zhang, Yifei,Wang, Li,et al. Thermodynamics and nucleation mechanism of ammonium jarosite in sulfuric acid solution[J]. JOURNAL OF CRYSTAL GROWTH,2017,478(NOV):52-57.
APA Liu, PengFei,Zhang, Yifei,Wang, Li,You, ShaoWei,&Bo, Jing.(2017).Thermodynamics and nucleation mechanism of ammonium jarosite in sulfuric acid solution.JOURNAL OF CRYSTAL GROWTH,478(NOV),52-57.
MLA Liu, PengFei,et al."Thermodynamics and nucleation mechanism of ammonium jarosite in sulfuric acid solution".JOURNAL OF CRYSTAL GROWTH 478.NOV(2017):52-57.
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