TITLE:
Photo-Degradation of Reactive Yellow 14 Dye (A Textile Dye) Employing ZnO as Photocatalyst
AUTHORS:
Luma M. Ahmed, Fatima T. Tawfeeq, Mariam H. Abed Al-Ameer, Khayal Abed Al-Hussein, Afrah R. Athaab
KEYWORDS:
Reactive Yellow 14 Dye, Zinc Oxide, Photocatalytic Decolourization, Treatment of Wastewater
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.4 No.11,
November
4,
2016
ABSTRACT: In this
paper, the reactive yellow 14 dye solution was removed from aqueous solution in
the presence of commercial ZnO (mean crystallite size is 44.116 nm) under the
UV A light. The decolourization of dye process was obeyed to pseudo-first
orderkinetics. The optimum conditions of decolourization for this dye such as:
initial dye concentration 50 mg/L, best dose of ZnO 350 mg/100mL and initial pH
of aqueous solution of dye 6.75 were studied. Activation energies for dye were
found to be 27.244 kJmol-1. The photoreaction process was observed
to be endothermic reaction and less randomness.