TY  - JOUR
T1  - Decoloration of the Reactive Blue Dye, KN-R
AU - , H. Gabriel AU - , J. Hong 
JO  - Research Journal of Applied Sciences
VL  - 3
IS  - 3
SP  - 216
EP  - 224
PY  - 2008
DA  - 2001/08/19
SN  - 1815-932x
DO  - rjasci.2008.216.224
UR  - https://makhillpublications.co/view-article.php?doi=rjasci.2008.216.224
KW  - KN-R dye
KW  -fenton
KW  -UV-fenton
KW  -decoloration
AB  - The oxidation using UV-Fenton reagent has been found to be a promising treatment method for the effective decolorization and degradation of dyes. The decolorization of the reactive blue dye KN-R was investigated using Fenton and UV/Fenton processes. The effects of solution pH, initial dye, H<SUB>2</SUB>O<SUB>2</SUB>, Fe<SUP>2+</SUP> concentrations, respectively, were studied and optimal conditions determined. The optimized treatment conditions are the following: pH 3.0, 30 mg L <SUP>1</SUP> (Fe<SUP>2+</SUP>), 10.2 g L <SUP>1</SUP> (H<SUB>2</SUB>O<SUB>2</SUB>) for a reaction time of 30 min. The KN-R dye degradation was found to be dependent on the dye concentration such that the higher the dye concentration, the lower the decoloration and degradation efficiencies. The UV/Fenton process showed higher decoloration rate than the Fenton process and 98% was achieved in about 10 min of the reaction time. The effect of iron source and NaCl were studied. Finally, kinetics involved in KN-R degradation were also calculated and the rate constants were found to be proportional to hydrogen peroxide concentration as well as ferrous ions concentration.
ER  -