The objective of this research work was to develop a simple and inexpensive process for adsorption of CO2 using an orange peel powder and carbon made from orange peel powder as an adsorbent. A fixed-bed reactor system was used to study the adsorption capacity as a function of pressure and flow rate. X-ray fluorescence spectroscopy (XRF) was used to determine quantitatively presence of elements. Also the Scanning Electron Microscope (SEM) analysis had been carried out for structure. Results of the experiments showed that the breakthrough adsorption capacity for orange peel powder was 2.604 mmol/g for 5 g and 10 LPH of CO2. For orange peel carbon the breakthrough adsorption capacity for 14 LPH for 7 g was 5.0843 mmol/g.