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.
Verma
Pradeep
P
Laboratory of Biochemistry of Wood-rotting Fungi, Institute of Microbiology, ASCR, Videnska 1083, 14220, Prague 4, Czech Republic.
Shah
Vishal
V
Baldrian
Petr
P
Gabriel
Jirí
J
Stopka
Pavel
P
Trnka
Tomás
T
Nerud
Frantisek
F
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