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Antipyrine removal by TiO.sub.2 photocatalysis based on spinning disc reactor technology
The photo-degradation of the emerging contaminant antipyrine (AP) was studied and optimized in a novel photocatalytic spinning disc reactor (SDR). A heterogeneous process (UV/H.sub.2O.sub.2/TiO.sub.2) was used. TiO.sub.2 was immobilized on the surface of a glass disc using a sol-gel method. A factorial design of experiments followed by a Neural Networks fitting allowed the optimal conditions to be determined for treating 50 mg/L of AP. Under these conditions (pH = 4; [H.sub.2O.sub.2].sub.0 = 1500 mg/L; disc speed = 500 rpm; flowrate = 25 mL/s), AP was completely degraded in 120 min and regeneration of the disc allowed 10 cycles with no loss in efficiency. The value of the apparent volumetric rate constant was found to be 6.9*10.sup.-4 s.sup.-1 with no apparent mass transfer limitation.
Antipyrine removal by TiO.sub.2 photocatalysis based on spinning disc reactor technology
The photo-degradation of the emerging contaminant antipyrine (AP) was studied and optimized in a novel photocatalytic spinning disc reactor (SDR). A heterogeneous process (UV/H.sub.2O.sub.2/TiO.sub.2) was used. TiO.sub.2 was immobilized on the surface of a glass disc using a sol-gel method. A factorial design of experiments followed by a Neural Networks fitting allowed the optimal conditions to be determined for treating 50 mg/L of AP. Under these conditions (pH = 4; [H.sub.2O.sub.2].sub.0 = 1500 mg/L; disc speed = 500 rpm; flowrate = 25 mL/s), AP was completely degraded in 120 min and regeneration of the disc allowed 10 cycles with no loss in efficiency. The value of the apparent volumetric rate constant was found to be 6.9*10.sup.-4 s.sup.-1 with no apparent mass transfer limitation.
Antipyrine removal by TiO.sub.2 photocatalysis based on spinning disc reactor technology
Exposito, A.J (author) / Patterson, D.A / Mansor, W.S.W / Monteagudo, J.M / Emanuelsson, E / Sanmartin, I / Duran, A
2017
Article (Journal)
English
BKL:
43.00
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