| Abstrakt: |
Because of the dyes' potential toxicity and visibility in surface waters, the treatment of hazardous organic dyes has piqued the attention of many people. The heterogeneous photocatalysis using titanium (TiO2), the most promising technology to decolorize the chlorazol black BH dye. This photoreaction was followed to the pseudo-first-order with low activation energy (Ea), which equal to -24.202 kJ mol−1. Furthermore, the thermodynamic parameters were determined utilization the Arrhenius, Eyring-Polanyi, and Gibbs equations proved that this photoreaction was exothermic, with less random and non-spontaneous reaction. In addition, the optimum conditions were controlled with applied the artificial UV-A and found to be 500 mg TiO2 dose, initial pH value at 5.04, and 283.15 K for 100 minutes. [ABSTRACT FROM AUTHOR] |
