title: Copper-ligand complex for the decolorization of synthetic dyes.
abstract: The reaction system containing Cu(II), hydrogen peroxide and D-arabinono-1,4-lactone was found to be effective in the decolorization and reduction of toxicity of azo, thiazine-, triphenylmethane- and anthraquinone-based synthetic dyes. More than 85% decolorization was obtained with 100ppm Acridine Orange, Azure B, Chicago Sky Blue 6B, Crystal Violet, Evans Blue, Poly B-411, Reactive Blue 2, Reactive Blue 5, and Remazol Brilliant Blue R incubated for 24h in the presence of 10mM CuSO(4), 20mM D-arabinono-1,4-lactone and 80 mM H(2)O(2). The rate of decolorization was not affected by pH in the range of 3-9. The rapid decolorization was accompanied by a fast decomposition of H(2)O(2) in the reaction mixture and by a fast production of hydroxyl radicals.
authors.affiliation: Laboratory of Biochemistry of Wood-rotting Fungi, Institute of Microbiology ASCR, Vídenská 1083, 14220 Prague 4, Czech Republic.
authors.forename: Pradeep
authors.initials: P
authors.lastname: Verma
authors.forename: Petr
authors.initials: P
authors.lastname: Baldrian
authors.forename: Jirí
authors.initials: J
authors.lastname: Gabriel
authors.forename: Tomás
authors.initials: T
authors.lastname: Trnka
authors.forename: Frantisek
authors.initials: F
authors.lastname: Nerud
mesh_terms: D004396:Coloring Agents / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D004787:Environmental Pollution / Q000517:prevention & control*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008163:Luminescent Measurements; D013056:Spectrophotometry, Ultraviolet
chemical_list: D004396:Coloring Agents; D003300:Copper; D006861:Hydrogen Peroxide