title: Study of the sonophotocatalytic degradation of basic blue 9 industrial textile dye over slurry titanium dioxide and influencing factors.
abstract: The sonophotocatalytic degradation of basic blue 9 industrial textile dye has been studied in the presence of ultrasound (20 kHz) over a TiO(2) slurry employing an UV lamp (15 W, 352 nm). It was observed that the color removal efficiency was influenced by the pH of the solution, initial dye concentration and TiO(2) amount. It was found that the dye degradation followed apparent first order kinetics. The rate constant increased by decreasing dye concentration and was affected by the pH of the solution with the highest degradation obtained at pH 7. The first order rate constants obtained with sonophotocatalysis were twofold and tenfold than those obtained under photocatalysis and sonolysis, respectively. The chemical oxygen demand was abated over 80%.
authors.affiliation: Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos, Avenve Universidad 1001, Col Chamilpa, Cuernavaca, Mor. C.P. 62209, Mexico.
authors.forename: Antonia Sandoval
authors.initials: AS
authors.lastname: González
authors.forename: Susana Silva
authors.initials: SS
authors.lastname: Martínez
mesh_terms: D002384:Catalysis; D004396:Coloring Agents; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008751:Methylene Blue; D010100:Oxygen / Q000737:chemistry; D010777:Photochemistry; D012972:Sodium Hydroxide / Q000737:chemistry; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet; D013464:Sulfuric Acids / Q000737:chemistry; D013843:Thiazines / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D014465:Ultrasonics
chemical_list: D004396:Coloring Agents; D012996:Solutions; D013464:Sulfuric Acids; D013843:Thiazines; C009495:titanium dioxide; D012972:Sodium Hydroxide; D014025:Titanium; C033158:sulfuric acid; D010100:Oxygen; D008751:Methylene Blue