Preparation and Characterization of Adsorbents for Carbon Dioxide Adsorption

Abstract

— To reduce emissions of greenhouse gasses, there should be better control of the release of CO 2 due to human activities. In this study, an inexpensive material was developed as adsorbents for CO 2 capture. For the preparation of activated carbon by chemical activation in a laboratory vacuum furnace with zinc chloride (ZnCl 2 ) at 500 °C for 1 hour, sugarcane bagasse was being used as a starting material whereas kaolinite was locally obtained. These adsorbents were applied for the storage of CO 2 within a range of temperatures (30 °C, 50 °C and 70°C) while the flow rate (30mL/min to 70mL/min) and column bed height (3cm – 5cm) were varied at constant temperature. This research also explored sample features such as the surface area and porosity, functional groups, and scanning electron microscopic images. This further substantiate the conclusion that CO 2 adsorption with kaolinite and activated carbon is favoured at low temperatures, low operating CO 2 flowrates and high column bed height.