Factors Influencing Adsorption of PH PH3 on Modified Activated Carbon
Carbon materials have a very large surface area and various surface functional groups. They have been widely used as the hey adsorbent alone or the modified surface to adsorb pollutants. In the process of producing of yellow phosphorus by electric furnace, about 3000 m 3 tail gas will be let out for one ton yellow phosphorus produc production tion. Tail gases consist of 90％ . of carbon monoxide (CO) and phosphine (PH PH3). The PH ). PH3 prevents the highly efficient utilization of CO and is an irritant and general systemic poison. Therefore, it is necessary to study ho how to effectively remove PH w PH3 in tail gases. Due to the fact that selective adsorption of non non-modified activated carbon (AC) is not enough to remove PH PH3 with a high efficiency, modification of AC might be an attractive route to improve the adsorption capacit capacity. In this paper, y. experiments were carried out to study the factors influencing xperiments the adsorption of PH PH3 on the modified AC such as the concentration of impregnant, reaction temperature, oxygen content and space velocity. The results showed that the 5％ HCl wa was the optimum concentration of s impregnant. In the presence of oxygen, the adsorption capacity of modified AC was more than that in the absence of oxygen. In addition, with the improvement of the reaction temperature, the adsorption capacity of modified AC was increasing initially then decreasing, because of the transition from physical adsorption to chemical adsorption as priority. The adsorption capacity of the modified AC was enhanced initially with the increasing of oxygen content. Once the oxygen conten content was enhanced t over 1％, there was no significant increase in the adsorption capacity of modified AC. The adsorption capacity of modified AC was decreased with the increasing of space velocity. The optimum parameters of reaction were 5％ HCl of impregnant impregnant, 7 , 70℃ of reaction temperature, 1％ of oxygen content, and space velocity 10～20min 20min-1.
carbon arbon material aterials s modified activated carbon adsorption phosphine(PH PH3)
Bing Bing-nan Ren
College of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, China Institute of Environmental Science and Engineering, Kunmi Kunming University ng of Science and Technology, Kunming, China
国际会议
青岛
英文
39-42
2009-10-09（万方平台首次上网日期，不代表论文的发表时间）