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
发表期刊JOURNAL OF CRYSTAL GROWTH
ISSN0022-0248
卷号478期号:NOV页码:52-57
摘要

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.

关键词Ammonium Jarosite Solid-liquid Equilibrium Induction Period Interfacial Energy
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1016/j.jcrysgro.2017.08.014
收录类别SCI
语种英语
关键词[WOS]SOLID-SOLUTION SERIES ; CRYSTAL-GROWTH MECHANISM ; INDUCTION PERIOD ; HYDROLYTIC PRECIPITATION ; SULFATE ; SYSTEM ; (NH4)FE-3(SO4)(2)(OH)(6) ; HYDROMETALLURGY ; AMMONIOJAROSITE ; CRYSTALLIZATION
WOS研究方向Crystallography ; Materials Science ; Physics
WOS类目Crystallography ; Materials Science, Multidisciplinary ; Physics, Applied
项目资助者National High Technology Research and Development Program of China (863 Program)(2011AA060701) ; National Natural Science Foundation of China(21276258)
WOS记录号WOS:000413647300009
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23376
专题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, 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
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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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