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- Title
Response surface methodology for ozonation of trifluralin using advanced oxidation processes in an airlift photoreactor.
- Authors
Behin, J.; Farhadian, N.
- Abstract
Degradation of trifluralin, as a wide used pesticide, was investigated by advance oxidation process comprising O/UV/HO 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.
- Subjects
TRIFLURALIN; OZONIZATION; OXIDATION; ULTRAVIOLET radiation; CHEMICAL decomposition
- Publication
Applied Water Science, 2017, Vol 7, Issue 6, p3103
- ISSN
2190-5487
- Publication type
Article
- DOI
10.1007/s13201-016-0443-y