TY  - JOUR
T1  - CO2 Capture by PEI-Impregnated Alumina Sorbents
AU  - Turgut, Furkan
AU  - Kostık, Simge
AU  - Erdogan, Barıs
AU  - Caglar, Basar
PY  - 2023
DA  - September
DO  - 10.55549/epstem.1350606
JF  - The Eurasia Proceedings of Science Technology Engineering and Mathematics
JO  - EPSTEM
PB  - ISRES Publishing
WT  - DergiPark
SN  - 2602-3199
SP  - 217
EP  - 226
VL  - 22
LA  - en
AB  - Direct air capture (DAC) or direct CO2 extraction from ambient air is a promising approach to reduce greenhouse gas emissions caused by both distributed (location independent) and point sources (location specific). Solid sorbents have been considered as more effective for DAC compared to the liquid counterpart since they have a faster kinetic and avoid volatile and heat losses due to the absence of evaporation of liquids. In this study, the alumina - supported polyethyleneimine (PEI) material was chosen as solid sorbents and their CO2 capture performance for different PEI loadings (20, 35, 50 wt%), flow rate (15, 30, 45 L/h) and adsorption temperatures (30, 40, 50, 60 °C) was investigated. Sorbents were prepared by using wetness impregnation method and their physical and chemical properties were characterized by several techniques such as N2 adsorption - desorption (surface area, pore size and volume), Scanning Electron Microscopy - SEM (surface morphology, surface chemical composition). The CO2 capture performance of sorbents were analyzed under different CO2 concentrations and the cyclic (adsorption - desorption) behavior of the sorbents were tested. The results show that alumina-supported PEI adsorbents are promising materials for CO2 capture with high CO2 adsorption capacity and stability.
KW  - PEI
KW  - Adsorption
KW  - CO2 Capture
KW  - DAC
KW  - Greenhouse Gas
KW  - Alumina
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UR  - https://doi.org/10.55549/epstem.1350606
L1  - https://dergipark.org.tr/en/download/article-file/3365266
ER  -