Ahmed, L.M., Mahdi, Q.M., Mahmoud, F.S., Mahammed, M.J. and Ahmed, N.S. (2017) Kinetic Study for the Decolorization of Dispersive Blue 26 Dye from Suspension Solution of Commercial ZnO. The 5th Scientific Conference of the College of Science University of Kerbala, 127-136.

has been cited by the following article:

• TITLE: UV-A Activated ZnO Mediated Photocatalytic Decolorization of Nigrosine (Acid Black 2) Dye in Aqueous Solution

  AUTHORS: Mohammed Thamer Jaafar

  KEYWORDS: Nigreson Dye, Acid Black 2 Dye, Photocatalytic, Decolorization, Oxidant Reagents

  JOURNAL NAME: Journal of Geoscience and Environment Protection, Vol.5 No.9, September 11, 2017

  ABSTRACT: The present study deals with studied the essential requirements for photo-decoulorization of nigrosine dye with suspension solution of photocatalyst (ZnO), under 250 Watt UV-A light (Io = 1.47 10-7 ensien s-1). A kinetics study of photo-decolourization for this dye was obeyed to pseudo-first order. The best initial pH of decolorization at 25 mg/L of dye solution with 300 mg of ZnO was given a fast reaction at 8.17. The calculated activation energy for this photoreaction was found to be 31.549 kJ·mol-1. Thermodynamically, the reaction is exothermic and spontaneously. The efficiency of decolorizatio E% was 97.077 at 15 min that decreased with addition oxidant reagents such as H2O2, Fe2+ and mixture from them.