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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},
}