With increasing strict environmental regulations and growing global water scarcity, the biggest challenge of this century is to have a sustainable supply of clean water. The continuous discharge of domestic and industrial wastewaters into natural water bodies needs aproperiate treatment strategies for reclaiming and reuse of water. For such application, membrane based treatment strategies have proved better than trivial technologies especially in terms of energy intensiveness. The current work is focused on the fabrication of nanofiltration membranes with beta-cyclodextrin chemically bonded to the active layer. Typically, the polysulfone membrane was casted over PET support using wet phase inversion method. Later, polyamide surface was formed over as-synthesized polysulfone base using interfacial polymerization (IP) method. During IP, the diamine aqeous solution containing the beta-cyclodextrin with 0.1% weight ratio was reacted with hexane solution containing terephthaloyl chloride (TPC) as a crosslinker. The synthesized membranes were characterized using scanning electron microscope (SEM), fourier transform infrared (FTIR) spectroscopy, water contact angle, Energy Dispersive X-Ray (EDX) Analysis and Atomic force microscopy (AFM). The membranes’ efficiencies were tested using crossflow filtration setup, where these have shown salt rejection upto 91.2 % and pollutant rejection upto 96.6 %. The best membrane has produced 20 L/m<sup>2</sup>h flux at 15 bar pressure.

Decoration of beta-cyclodextrin in the active layer of nanofiltration membrane for improved rejection of salts and micropollutants

Fall 2022 abstracts, posters, and presentations will launch in mid-September.

ACS Fall 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.