Wednesday, November 11, 2015: 9:10 AM
255E (Salt Palace Convention Center)
The increase in greenhouse gas emission due to the consumption of vast amounts of fossil-based energy resources is most likely associated with climate changes. Among the major greenhouse gases is CO2, which is responsible for approximately 64% of the greenhouse effects observed to date. Therefore, it is essential to improve current CO2 capture technologies for cost-effective CO2 capture. In this work, a CO2 adsorbent was prepared by immobilizing tetraethylenepentamine (TEPA) onto kaolin, an inexpensive and widely available clay. The prepared sorbents were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). At the optimal TEPA loading (30 wt%) on the kaolin, the CO2 sorption capacity of the sorbent reached 2.13 mmol CO2/g-sorbent at 70°C with the presence of moisture (ca.10 vol %). The regeneration of the adsorbent can be achieved using nitrogen at 100 °C. This work shows that this polymer composite has the potential to be applied as a solid sorbent for CO2 capture.