Open AccessInfluencing the Artificial UV-A light on decolorization of Chlorazol black BH Dye via using bulk ZnO Suspensions
Author(s) -
Sawsan Khudhair Abbas,
Zainab M. Hassan,
Luma M. Ahmed
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1294/5/052050
Subject(s) - exothermic reaction , arrhenius equation , activation energy , gibbs free energy , kinetics , degradation (telecommunications) , chemistry , thermodynamics , chemical engineering , photochemistry , materials science , polymer chemistry , organic chemistry , physics , computer science , telecommunications , quantum mechanics , engineering
This manuscript is interested with the using Chlorazol black BH dye as a model compound. This photo reaction was obeyed first-order kinetics with low activation energy equal to 27.135 kJ/mol. Moreover, the thermodynamic parameters were calculated using the Arrhenius equation, the Eyring-Polanyi equation and the Gibbs equation, then proved this photo reaction is exothermic, with less random and spontaneous reaction. The best conditions were controlled with the using the artificial UV-A and found to be 100 mg/L (dye concentration), 200 mg (bulk ZnO), 7.63 as initial pH and 15°C, from the other side, the photo-decolorization efficiency at these best conditions, was reached to 99.072% At final, the suitable mechanism for decolorization and degradation of Chlorazol black BH Dye was suggested.