Decolorization of synthetic dyes using a copper complex with glucaric acid.
Selected azo, acridine, triphenyl methane, anthraquinone and thiazine-based dyes were decolorized using a catalytic system consisting of Cu(II)/glucaric acid/H(2)O(2). More than 90% decolorization was obtained with 100 ppm Acridine Orange, Azure B, Chicago Sky Blue, Crystal Violet, Methyl Orange, Poly B-411, Reactive Black 5, Reactive Blue 2, and Remazol Brilliant Blue R within 24 h. Seventy to eighty percent decolorization was achieved within the first 6 h. The decolorizaton was not affected by pH. The involvement of hydroxyl radicals produced in the system in the decolorization of the dye molecules was confirmed by electron spin resonance study.
Laboratory of Biochemistry of Wood-rotting Fungi, Institute of Microbiology, ASCR, Videnska 1083, 14220, Prague 4, Czech Republic.
Pradeep
P
Verma
Vishal
V
Shah
Petr
P
Baldrian
Jirí
J
Gabriel
Pavel
P
Stopka
Tomás
T
Trnka
Frantisek
F
Nerud
D002384:Catalysis; D004396:Coloring Agents / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D004578:Electron Spin Resonance Spectroscopy; D004787:Environmental Pollution / Q000517:prevention & control*; D005937:Glucaric Acid / Q000737:chemistry*; D012989:Soil Pollutants
D004396:Coloring Agents; D012989:Soil Pollutants; D003300:Copper; D005937:Glucaric Acid