Search

Abstract: The simultaneous removal of SO2 and NO from simulated flue gas by cerium oxide supported over palm shell activated carbon (Ce/PSAC) was studied in a fixed bed adsorber. The effects of adsorber temperature, presence of humidity, feed gas concentration and space velocity were studied as the process parameter. The results were illustrated as sorption breakthrough curves. From the experimental results, it was found that at higher space velocity, the SO2 and NO sorption capacity was reduced. Humidity enhanced the SO2 sorption capacity but deterred the NO sorption at percentage more than 15%. Temperature played an important role in the simultaneous removal of SO2 and NO by cerium supported over PSAC. The maximum simultaneous sorption capacity of SO2 and NO was achieved at temperature 150°C with 121.7 and 3.5mg/g, respectively. This study shows that cheap biomass based activated carbon can be a potential sorbent for simultaneous removal of SO2 and NO from flue gas. [Copyright &y& Elsevier]

Abstract: This study presents findings from an experimental investigation of the influences of several factors on the desulfurization activity of sorbents synthesized from coal fly ash, CaO, and CaSO4. Specifically, the effects of specific surface area (16.1–133.3m2/g), reaction temperature (60–300°C), feed concentration of SO2 (500–2500ppm), and feed concentration of NO (0–750ppm) were elucidated using a fixed bed reactor. In general, the sorbent desulfurization activity increased with increasing specific surface area, reaction temperature, and NO concentration but with decreasing SO2 concentration. The physical and chemical properties of sorbent before and after SO2 capture were characterized through scanning electron microscopy, X-ray diffraction, and Fourier transform infrared analyses. [Copyright &y& Elsevier]