树脂/聚醚砜复合膜的制备及其对碘离子的吸附性能

doi:10.11896/j.issn.1005-023X.2018.18.032

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Abstract PES/resin blend flat sheet membranes were prepared by phase inversion process. The powder anion exchange resin (201×7) was used as the functional material and the polyethersulfone (PES) was used as matrix material. The membranes’ morphology was characterized by scanning electron microscopy (SEM). The tensile strength of the membranes was tested by electronic tensile testing machine. The adsorption mechanism of membranes was studied by FTIR. The results of SEM indicated that, the addition of resin caused an increase in surface porosity of the PES/resin composite membrane and the resin was homogeneous mixing in the membranes. The tensile strength of the composite membranes decreased slightly with the increase of resin content. The iodide adsorption capacity of the membranes (the resin content ratio was 60% weight by weight)was evaluated. The contact adsorption experiment showed that the equilibrium of the adsorption could be reached within 120 min. The batch adsorption studies demonstrated that the membrane adsorbents could be applied for efficient adsorption removal of iodide ion in an extensive pH range from 3 to 9. Adsorption results showed that the adsorption amount increased with the increasing of initial concentration for iodide ion, and the Freundlich model was more suited the multilayer adsorption. It indicated that the multilayer adsorption played an important role in the adsorption process. The presence of other anions such as sulfate ion chloridion and nitrate ion could decrease the adsorption amount of iodide ion. In addition, Fourier transform infrared spectroscopy showed that the adsorption of the composite membranes was physical adsorption. Finally, the iodide loaded composite membranes were regenerated and the removing efficiency of iodide didn’t reduce with the increase of regeneration times.

Key words： resin composite membrane iodide ion adsorbent

Published: 18 October 2018

CLC number:	TB333
	X52

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	YU Fengqin
	WANG Haizeng

Cite this article:

YU Fengqin,WANG Haizeng. Preparation and Application of PES/Resin Composite Membrane Adsorbents in the Removal of Iodide Ion[J]. Materials Reports, 2018, 32(18): 3276-3280.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.18.032 OR http://www.mater-rep.com/EN/Y2018/V32/I18/3276

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