title: [Fe(II) enhanced sonochemical degradation of azo dye Acid Red B (ARB)].
abstract: Sonochemical degradation of azo dye Acid Red B (ARB) was studied in this paper. The effect of pH and ferrous ion concentrations on the process was investigated. The results show that decolorization of ARB proceeds faster in acidic medium. The production of H2O2 is proportional to sonication time. The presence of Fe(II), which could react with H2O2 to produce *OH, enhances the sonochemical decolorizatio and degradation of the dye. The decolorization rates of ARB are 2.17 and 2.75 times faster, respectively, when Fe(II) concentrations are 1.43 mg/L and 2.85 mg/L. The UV absorptions at 322 nm and 254 nm also reduce ARB dramatically.
authors.affiliation: State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors.forename: Jian-tuan
authors.initials: JT
authors.lastname: Ge
authors.forename: Jiu-hui
authors.initials: JH
authors.lastname: Qu
authors.forename: Min
authors.initials: M
authors.lastname: Xu
mesh_terms: D001391:Azo Compounds / Q000737:chemistry; D005296:Ferrous Compounds / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry; D012235:Rhodamines / Q000737:chemistry*; D013010:Sonication
chemical_list: D001391:Azo Compounds; D005296:Ferrous Compounds; D012235:Rhodamines; C022027:lissamine rhodamine B; D006861:Hydrogen Peroxide