Copper-ligand complex for the decolorization of synthetic dyes.
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.
Verma
Pradeep
P
Laboratory of Biochemistry of Wood-rotting Fungi, Institute of Microbiology ASCR, Vídenská 1083, 14220 Prague 4, Czech Republic.
Baldrian
Petr
P
Gabriel
Jirí
J
Trnka
Tomás
T
Nerud
Frantisek
F
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
D004396:Coloring Agents; D003300:Copper; D006861:Hydrogen Peroxide