Spray-Dispersion of Ultra-Small EMT Zeolite Crystals in Thin-Film Composite Membrane for High-Permeability Nanofiltration Process - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Membrane Science Année : 2021

Spray-Dispersion of Ultra-Small EMT Zeolite Crystals in Thin-Film Composite Membrane for High-Permeability Nanofiltration Process

Lei Zhao
  • Fonction : Auteur
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  • IdHAL : lei-zhao
Yang Feng
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Xiaolei Cui
  • Fonction : Auteur
Jia Pang
  • Fonction : Auteur
Haixiang Sun
  • Fonction : Auteur
Svetlana Mintova

Résumé

Thin-film composite (TFC) membranes show great potential in dye nanofiltration but their performance still required further improvement. In this work, ultra-small EMT zeolite nanocrystals were embedded into the interfacial polymerized polyamide (PA) layer supported on porous nylon via spray dispersion method and used in dye separation. Ultra-small nanosized EMT zeolite crystals with plate-like morphology were synthesized from organic-free precursor suspensions at ambient conditions (30 o C). The plate-like EMT nanocrystals were homogeneously dispersed in the thin-film nanocomposite (TFN) membranes, mitigating the formation of agglomerates during the interfacial polymerization. The TFN membrane prepared with 0.05 w/v % EMT nanocrystals had a water permeance up to 24.37 L m-2 h-1 bar-1 , which is nearly 6 times higher than the pristine PA TFC membrane, and maintain the dye rejection (crystal violet) of 99.98 %. A new method for preparation of high quality TFN membranes containing zeolite nanocrystals was developed. The potential use of the TFN membranes with the ultra-small zeolite crystals for dye nanofiltration was demonstrated.

Domaines

Matériaux
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Dates et versions

hal-03145253 , version 1 (18-02-2021)

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Guodong Kong, Lili Fan, Lei Zhao, Yang Feng, Xiaolei Cui, et al.. Spray-Dispersion of Ultra-Small EMT Zeolite Crystals in Thin-Film Composite Membrane for High-Permeability Nanofiltration Process. Journal of Membrane Science, 2021, 622, pp.119045. ⟨10.1016/j.memsci.2020.119045⟩. ⟨hal-03145253⟩
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