Spray-dispersion of ultra-small EMT zeolite crystals in thin-film composite membrane for high-permeability nanofiltration process

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 separation. Ultra-small nanosized crystals with plate-like morphology synthesized from organic-free precursor suspensions at ambient conditions (30 °C). The homogeneously dispersed thin-film nanocomposite (TFN) membranes, mitigating formation of agglomerates during polymerization. TFN membrane prepared 0.05 w/v % had a water permeance up to 24.37 L m-2 h-1 bar-1, which is nearly 6 times higher than pristine PA TFC membrane, maintain rejection (crystal violet) 99.98 %. A new for preparation high quality containing was developed. use demonstrated.