Immobilization of Cyphos Ionic Liquids in Alginate Capsules for Cd(II) Sorption
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作者:
Guibal, E.
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Ecole Mines Ales France, Lab Genie Environm Ind, Ales, FranceEcole Mines Ales France, Lab Genie Environm Ind, Ales, France
Guibal, E.
[1
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Figuerola Pinol, A.
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Ecole Mines Ales France, Lab Genie Environm Ind, Ales, France
Univ Politecn Cataluna, Dept Chem Engn, EUPVG, La Geltru, SpainEcole Mines Ales France, Lab Genie Environm Ind, Ales, France
Figuerola Pinol, A.
[1
,2
]
Ruiz, M.
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Univ Politecn Cataluna, Dept Chem Engn, EUPVG, La Geltru, SpainEcole Mines Ales France, Lab Genie Environm Ind, Ales, France
Ruiz, M.
[2
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Vincent, T.
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Ecole Mines Ales France, Lab Genie Environm Ind, Ales, FranceEcole Mines Ales France, Lab Genie Environm Ind, Ales, France
Vincent, T.
[1
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Jouannin, C.
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Ecole Mines Ales France, Lab Genie Environm Ind, Ales, FranceEcole Mines Ales France, Lab Genie Environm Ind, Ales, France
Jouannin, C.
[1
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Sastre, A. M.
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Univ Politecn Cataluna, Dept Chem Engn, ETSEIB, Barcelona, SpainEcole Mines Ales France, Lab Genie Environm Ind, Ales, France
Sastre, A. M.
[3
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机构:
[1] Ecole Mines Ales France, Lab Genie Environm Ind, Ales, France
Four phosphonium ionic liquids (Cyphos IL-101, IL-105, IL-109, and IL-111) have been immobilized in composite biopolymer capsules (alginate/gelatin). The resins were tested for Cd(II) sorption in HCl solutions. Cyphos IL-111 being solid at room temperature, the phase change contributes to the formation of large vesicles in the resin particle. Sorption isotherms were not affected by the anionic counterpart (chloride, dicyanamide, or tetrafluoroborate), except with bistriflamide (Cd(II) was not sorbed). HCl concentration (0.1-4.6M) did not influence the Cd(II) uptake (60mg Cd g-1). Kinetic profiles were modeled using the intraparticle diffusion equation. Highly porous foams have been developed as an alternative to resin beads in order to improve diffusion characteristics.