کنفرانس ملی مهندسی و مدیریت محیط زیست

صفحه اصلی / هفتمین کنفرانس ملی مهندسی و مدیریت محیط زیست

Evaluation of Synthetic Baghdadite Nanoparticles as Novel Additives in Pebax-Based Mixed Matrix Membranes for CO2/N2 Gas Separation

نویسندگان :

Sepehr Masjed Soleyman Zadeh¹ Samaneh Vakili² Ali Kargari³ Abbas Naderifar⁴

1- دانشگاه صنعتی امیرکبیر 2- دانشگاه صنعتی امیرکبیر 3- دانشگاه صنعتی امیرکبیر 4- دانشگاه صنعتی امیرکبیر

کلمات کلیدی :

Mixed Matrix Membrane (MMM)،Pebax،Baghdadite (BAG)،CO2/N2 gas separation،Greenhouse gases (GHGs)

چکیده :

In this study, Baghdadite (BAG) nanoparticles were synthesized and introduced into Pebax‑based mixed‑matrix membranes (MMMs) to enhance CO₂/N₂ gas‑separation performance. BAG, a bioactive calcium-silicate-zirconate ceramic, offers abundant polar Ca-O and Si-O groups that can strengthen CO₂ sorption while improving interfacial compatibility within the polymer matrix. MMMs containing BAG were fabricated and systematically evaluated. The optimal membrane containing BAG exhibited a remarkable improvement in transport properties, as the CO₂ permeability increased by approximately 52% relative to pristine Poly(ether‑block‑amide) (Pebax). Likewise, the CO₂/N₂ ideal selectivity increased dramatically by about 455% compared to the pristine Pebax. Structural analyses confirmed that well‑dispersed BAG nanoparticles promoted enhanced chain ordering within the polyamide domains and introduced additional polar interaction sites, collectively facilitating preferential CO₂ transport. The optimized membrane formulation demonstrated a well‑balanced enhancement in both permeability and selectivity, indicating that BAG effectively improves the intrinsic gas‑transport characteristics of Pebax‑based MMMs. Overall, these findings highlight BAG as a promising and previously unexplored ceramic filler for developing energy‑efficient, environmentally oriented membrane systems aimed at effective CO₂ capture.