Back to Search Start Over

Towards CO2 Adsorption Enhancement via Polyethyleneimine Impregnation

Authors :
Supasinee Pipatsantipong
Pramoch Rangsunvigit
Kulprathipanja, Santi
Publication Year :
2012
Publisher :
Zenodo, 2012.

Abstract

To reduce the carbon dioxide emission into the atmosphere, adsorption is believed to be one of the most attractive methods for post-combustion treatment of flue gas. In this work, activated carbon (AC) was modified by polyethylenimine (PEI) via impregnation in order to enhance CO2 adsorption capacity. The adsorbents were produced at 0.04, 0.16, 0.22, 0.25, and 0.28 wt% PEI/AC. The adsorption was carried out at a temperature range from 30 °C to 75 °C and five different gas pressures up to 1 atm. TG-DTA, FT-IR, UV-visible spectrometer, and BET were used to characterize the adsorbents. Effects of PEI loading on the AC for the CO2 adsorption were investigated. Effectiveness of the adsorbents on the CO2 adsorption including CO2 adsorption capacity and adsorption temperature was also investigated. Adsorption capacities of CO2 were enhanced with the increase in the amount of PEI from 0.04 to 0.22 wt% PEI before the capacities decreased onwards from0.25 wt% PEI at 30 °C. The 0.22 wt% PEI/AC showed higher adsorption capacity than the AC for adsorption at 50 °C to 75 °C.

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....b4215b90af433d95dcb8fe5acd08fd0f
Full Text :
https://doi.org/10.5281/zenodo.1329334