Carbon dioxide (CO 2 ) is the primary greenhouse gas which enters the atmosphere and subsequently causes global warming and many other environmental problems. One of the best methods of CO 2 removal from the atmosphere is CO 2 absorption by solvent. In this thesis the use of wetted wire column, which is a new method for gas absorption, has been investigated. Gas absorption in this type of towers depends on many different parameters. The purpose of this study is to investigate the effect of various parameters and provide approaches to improve the operation of wetted wire column in CO 2 gas absorption. The parameters which have investigated are: The amount of liquid and gas flow rates, wire material, wires surface structure and geometry of wet wires. Studies show that changes in gas and liquid flow rates can have a significant effect on both the rate of absorption and mass transfer coefficient in the tower. Also, the use of surface modification methods can increase the rate of adsorption. Results show that in case of steel wire, aluminum thermal spraying and copper thermal spraying on the surface of wires increases the performance of the tower by about 20 to 30% and 15% to 20% respectively. For brass wires, aluminum thermal spraying increases the absorption and mass transfer coefficient by up to 15%. Also Experiments were performed with spiral wires, and results showed that spiraling the wires could increase the absorption rate by more than 30%. Also, a comparison between the wetted wire column and the wetted wall column was made to determine that the absorption rate in the wetted wire column is about 50% higher than the wetted wall tower. In all studied setups and variations, the effect of gas and liquid flow rates on the performance of tower was investigated.