Amine-Terminated PAN Membranes as Anion-Adsorber Materials

Anion-adsorbing membranes provide an interesting possibility to remove toxic arsenate and chromate from drinking water. A promising way to prepare anion-exchange materials is to introduce positively charged amine groups on polymers. In this study, polyacrylonitrile (PAN) ultrafiltration membranes were modified with amine functionalities on the membranes. The success of the modifications was demonstrated using infrared spectroscopy and zeta potential measurements. Additionally, the arsenate adsorption was analyzed. The modified membrane showed arsenate adsorption 5 times higher than the pristine PAN membrane.

Automated summary

Amine-functionalized PAN ultrafiltration membranes were successfully modified to enhance arsenate adsorption, showing a 5-fold increase compared to pristine PAN membranes. The modifications were confirmed using infrared spectroscopy and zeta potential measurements.