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@ARTICLE{Ying:904028,
author = {Ying, Ziwen and Huo, Manxing and Wu, Guixuan and Li, Jie
and Ju, Yun and Wei, Qifeng and Ren, Xiulian},
title = {{R}ecovery of vanadium and chromium from leaching solution
of sodium roasting vanadium slag by stepwise separation
using amide and {EHEHPA}},
journal = {Separation and purification technology},
volume = {269},
issn = {1383-5866},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2021-05598},
pages = {118741 -},
year = {2021},
abstract = {The recovery of vanadium and chromium in the leaching
solution of sodium roasting vanadium slag has always been a
difficult issue and received considerable interest. The
present study was based on our previous research to recover
vanadium from the raffinate where Cr(VI) had been removed
with amide. Extraction of high concentration vanadium (V)
from sulphate acid medium was explored and the extraction
performances of D2EHPA, EHEHPA and Cyanex 272 were compared.
The results demonstrated that EHEHPA was the most suitable
extractant to extract vanadium from the raffinate and
$99.91\%$ vanadium could be recovered with three-stage
countercurrent extraction. The V2O5 product with $99.97\%$
purity was obtained when the V-loaded organic phase was
scrubbed and stripped. The effects of different parameters
on the stoichiometry of vanadium (V) extraction under
equilibrium conditions were studied. The extraction
mechanism was investigated using FT-IR and ESI-MS in depth,
and the extraction of V(V) with three used extractants all
followed an ion exchange mechanism. A feasible way was
provided by the study for selective recovery of vanadium and
chromium in the leaching solution of sodium roasting
vanadium slag.},
cin = {IEK-2},
ddc = {540},
cid = {I:(DE-Juel1)IEK-2-20101013},
pnm = {1241 - Gas turbines (POF4-124)},
pid = {G:(DE-HGF)POF4-1241},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000652640300005},
doi = {10.1016/j.seppur.2021.118741},
url = {https://juser.fz-juelich.de/record/904028},
}