title: Catalytic oxidation of S(IV) in seawater slurries of activated carbon.
abstract: Flue gas desulfurization (FGD) by means of SO2 absorption in seawater is a well-known process with a main drawback; due to the low S(IV) oxidation rate at the low pH values of the absorption tower effluent, a large oxidation basin is required. Laboratory reactor tests, in which a commercially available activated carbon was used, showed a significant catalytic effect. It is shown that the kinetic equation for the catalytic oxidation of S(IV), in seawater slurries of activated carbon, is first-order with respect to S(IV) and zero-order with respect to oxygen. The dependence of the kinetic constant with respect to pH, temperature, and catalyst size particles were also obtained.
authors.affiliation: Department of Chemical and Environmental Engineering, University of Seville, Camino de los Descubrimientos s/n, 41092, Sevilla, Spain. vidal@esi.us.es
authors.forename: B F
authors.initials: BF
authors.lastname: Vidal
authors.forename: P
authors.initials: P
authors.lastname: Ollero
authors.forename: F J
authors.initials: FJ
authors.lastname: Gutiérrez Ortiz
authors.forename: R
authors.initials: R
authors.lastname: Arjona
mesh_terms: D000393:Air Pollutants / Q000302:isolation & purification; D002244:Carbon / Q000737:chemistry; D002384:Catalysis; D007700:Kinetics; D010084:Oxidation-Reduction; D012623:Seawater / Q000737:chemistry*; D013455:Sulfur / Q000737:chemistry*; D013458:Sulfur Dioxide / Q000302:isolation & purification
chemical_list: D000393:Air Pollutants; D013458:Sulfur Dioxide; D013455:Sulfur; D002244:Carbon