title: Simultaneous adsorption of SO2 and NO from flue gas over mesoporous alumina.
abstract: Mesoporous alumina (MA) with a higher ability to simultaneously remove SO2 and NO was prepared by the evaporation-induced self-assembly process. The adsorption capacities of MA are 1.79 and 0.702 mmol/g for SO2 and NO, respectively. The Brunauer-Emmett-Teller method was used to characterize the adsorbent. Simultaneous adsorption of SO2 and NO from flue gas over MA in different operating conditions had been studied in a fixed bed reactor. The effects of temperature, oxygen concentration and water vapour were investigated. The experimental results showed that the optimum temperature for MA to simultaneously remove SO2 and NO was 90°C. The simultaneous adsorption capacities of SO2 and NO could be enhanced by increasing O2 when its concentration was below 5%. The changes of simultaneous adsorption capacities were not obvious when O2 concentration was above 5%. The increase in relative humidity results in an increase after dropping of SO2 adsorption capacity, whereas the adsorption capacity of NO showed an opposite trend. The results suggest that MA is a great adsorbent for simultaneous removal of SO2 and NO from flue gas.
authors.affiliation: a Faculty of Environmental Science and Engineering , Kunming University of Science and Technology , Kunming 650500 , People's Republic of China.
authors.forename: Xin
authors.initials: X
authors.lastname: Sun
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Tang
authors.forename: Honghong
authors.initials: H
authors.lastname: Yi
authors.forename: Kai
authors.initials: K
authors.lastname: Li
authors.forename: Ping
authors.initials: P
authors.lastname: Ning
authors.forename: Bin
authors.initials: B
authors.lastname: Huang
authors.forename: Fang
authors.initials: F
authors.lastname: Wang
authors.forename: Qin
authors.initials: Q
authors.lastname: Yuan
mesh_terms: D000327:Adsorption; D000393:Air Pollutants / Q000302:isolation & purification*; D000537:Aluminum Oxide / Q000138:chemical synthesis*; D009569:Nitric Oxide / Q000302:isolation & purification*; D010100:Oxygen; D013458:Sulfur Dioxide / Q000302:isolation & purification*; D013696:Temperature; D014867:Water
chemical_list: D000393:Air Pollutants; D014867:Water; D013458:Sulfur Dioxide; D009569:Nitric Oxide; D000537:Aluminum Oxide; D010100:Oxygen
keywords: NO; SO2; coal combustion flue gas; mesoporous alumina; simultaneous adsorption