title: A novel wet-scrubbing process using Fe(VI) for simultaneous removal of SO2 and NO.
abstract: The objective of this work was to develop a novel wet-scrubbing process using Fe(VI) for the simultaneous removal of gaseous NO and SO(2). The oxidation of SO(2) and NO with Fe(VI) was studied in aqueous solution at alkaline pH (9.0-11.0). A stoichiometric molar ratio for NO and SO(2) oxidation with Fe(VI) was determined to be nearly 3.0. Sulfate and nitrate was identified as final products by ion chromatography from the reaction at pH 9.0-11.0. The feasibility of simultaneous removal of multiple gas pollutants with the continuous feeding of ferrate in lab-scale was investigated from the view of industrial application. It was found that the removal efficiency of NO and SO(2) was enhanced with the increase of Fe(VI) concentration, more than 90% NO removal efficiency and 100% SO(2) removal efficiency were achieved by wet-scrubbing process using Fe(VI) at room temperature and ambient atmosphere. The results demonstrate that Fe(VI) could be an effective wet-scrubbing agent for the simultaneous removal of NO and SO(2).
authors.affiliation: School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China.
authors.forename: Dehua
authors.initials: D
authors.lastname: Xia
authors.forename: Chun
authors.initials: C
authors.lastname: He
authors.forename: Linfei
authors.initials: L
authors.lastname: Zhu
authors.forename: Yanling
authors.initials: Y
authors.lastname: Huang
authors.forename: Hanying
authors.initials: H
authors.lastname: Dong
authors.forename: Minhua
authors.initials: M
authors.lastname: Su
authors.forename: Mudar Abou
authors.initials: MA
authors.lastname: Asi
authors.forename: Di
authors.initials: D
authors.lastname: Bian
mesh_terms: D002853:Chromatography, Liquid; D005240:Feasibility Studies; D007501:Iron / Q000737:chemistry*; D009569:Nitric Oxide / Q000737:chemistry / Q000302:isolation & purification*; D010084:Oxidation-Reduction; D013458:Sulfur Dioxide / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D013458:Sulfur Dioxide; D009569:Nitric Oxide; D007501:Iron