| Autor: |
Ngoy, Jacob Masiala, Daramola, Michael O., Chitsiga, Tafara Leonard, Falcon, Rosemary, Wagner, Nicola |
| Zdroj: |
South African journal of chemical engineering; June 2017, Vol. 23 Issue: 1 p139-144, 6p |
| Abstrakt: |
Freeze-drying is one of the promising purification technologies due to its ability to produce outputs with high purity at low energy. This work attempts to improve the adsorption properties of a novel amine adsorbent for CO2capture through the use of freeze drying process. Thus, a polyaspartamide (PAA) was produced after freeze-drying process of a polysuccinimide (PSI) synthesized through polycondensation reaction. The synthesized PSI was grafted with a monoethanolamine (MEA), a water-soluble amine, and an ethylenediamine (EDA), then tested for CO2capture. The BET analysis showed the enhancement of geometry/structure with the increase of water-soluble amine (MEA) in the PAA. In addition, testing the CO2adsorption capacity with pure CO2at 1.1 bar and a temperature of 40 °C using a thermogravimetric analyser resulted in increase of CO2adsorption capacity as the amount of MEA in PAA increased. The maximum CO2adsorbed was 44 mg-CO2/g at 100% MEA incorporated in PAA, indicating a significant increase from 19 mg-CO2/g recorded for the crude PSI. Thus, the water soluble PAA could be an effective adsorbent for CO2capture via adsorption technology for the reduction of CO2emissions in future. |
| Databáze: |
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