Response surface methodology for ozonation of trifluralin using advanced oxidation processes in an airlift photoreactor

被引：23

作者：

Behin J. ^{[1
]}

Farhadian N. ^{[1
]}

机构：

[1] Department of Chemical Engineering, Faculty of Engineering, Razi University, Baghe Abrisham, Kermanshah

来源：

Applied Water Science | 2017年 / 7卷 / 06期

关键词：

Advanced oxidation process; Airlift photoreactor; Ozone; Response surface method; Trifluralin; Ultraviolet irradiation;

D O I：

10.1007/s13201-016-0443-y

中图分类号：

学科分类号：

摘要：

Degradation of trifluralin, as a wide used pesticide, was investigated by advance oxidation process comprising O3/UV/H2O2 in a concentric tube airlift photoreactor. Main and interactive effects of three independent factors including pH (5–9), superficial gas velocity (0.05–0.15 cm/s) and time (20–60 min) on the removal efficiency were assessed using central composite face-centered design and response surface method (RSM). The RSM allows to solve multivariable equations and to estimate simultaneously the relative importance of several contributing parameters even in the presence of complex interaction. Airlift photoreactor imposed a synergistic effect combining good mixing intensity merit with high ozone transfer rate. Mixing in the airlift photoreactor enhanced the UV light usage efficiency and its availability. Complete degradation of trifluralin was achieved under optimum conditions of pH 9 and superficial gas velocity 0.15 cm/s after 60 min of reaction time. Under these conditions, degradation of trifluralin was performed in a bubble column photoreactor of similar volume and a lower efficiency was observed. © 2016, The Author(s).

引用

页码：3103 / 3112

页数：9

共 52 条

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