O3/Fenton for the treatment of effluent containing Reactive Yellow X-RG is investigated. The response surface methodology is applied to study the main and interactive effects of the parameters. With the initial dye concentration being controlled at 300 mg L−1, the optimized conditions for wastewater treatment are 3.68, 29.19 and 18.49 mg min−1 for initial pH, mole ratio of [H2O2]/[Fe2+] and ozone dosage, respectively. The regression quadratic model well describing the degradation efﬁciency of O3/Fenton process is developed and validated by the analysis of variances, respectively. In addition, a possible pathway for Reactive Yellow X-RG degradation is proposed by detecting the temporal evolution of intermediates in the solution, with the use of some techniques including ultraviolet spectrophotometric method (UV-Vis), Fourier transform infrared spectroscopy (FT-IR) and gas chromatography–mass spectrometry (GC/MS). Meanwhile, every reaction step is given to explain the degradation mechanisms.
Degradation of Reactive Yellow X-RG by O3/Fenton system: response surface approach, reaction mechanism, and degradation pathway
Yongjun Shen, Qihui Xu, Jun Liang, Wei Xu; Degradation of Reactive Yellow X-RG by O3/Fenton system: response surface approach, reaction mechanism, and degradation pathway. Water Sci Technol 18 November 2016; 74 (10): 2483–2496. doi: https://doi.org/10.2166/wst.2016.430
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