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Vol. 25 No. 4 (2013): Vol 25 Issue 4

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Ultrasound-Promoted Degradation of Acid Brown 348 by Fenton-Like Processes

https://doi.org/10.14233/ajchem.2013.13562
Ji-Tai Li
Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R. China
Rui-Jia Lan
Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R. China ; Faculty of Chemistry and Material Science, Langfang Teachers’ College, P.R.China
Bo Bai
Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, P.R. China
Ya-Li song
College of Pharmaceutical, Hebei University, Baoding 071002, P.R. China

Corresponding Author(s) : Ji-Tai Li

lijitai@hbu.cn

Asian Journal of Chemistry, Vol. 25 No. 4 (2013): Vol 25 Issue 4

Abstract

The combination of ultrasonic irradiation and Fenton-like's reagent is effective for the degradation of Acid brown 348 in aqueous solution. Furthermore, it can achieve better results than either Fenton-like reagent or ultrasound alone. Effects of the reaction conditions on the removal of Acid brown 348 from aqueous solution were observed under ultrasound irradiation. The best removal ratio was 96 % under the optimal conditions (pH 2.5, dosage of fly ash 2.5 g/L, H2O2 5.0 mM, the dye initial concentration 50 mg/L, temperature 40 ºC, reaction time 140 min, ultrasonic frequency 40 kHz). Based on the degradation compounds identified from LC-MS and UV-VIS studies, -N=N- bonds of the Acid brown 348 molecule were found to be broken. The wastewater from the factory was treated first by activated carbon absorption and then degraded with ultrasound/fly ash/H2O2, the removal efficiency of CODCr of dye wastewater was 95 %, whose degradation kinetic was well fitted Behnajady's model.

Keywords

Fenton-like reagent Acid brown 348 Degradation Ultrasound irradiation
Li, J.-T., Lan, R.-J., Bai, B., & song, Y.-L. (2012). Ultrasound-Promoted Degradation of Acid Brown 348 by Fenton-Like Processes. Asian Journal of Chemistry, 25(4), 2246–2250. https://doi.org/10.14233/ajchem.2013.13562
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