International Journal of Photoenergy / 2008 / Article / Fig 3

Research Article

Influence of Irradiance, Flow Rate, Reactor Geometry, and Photopromoter Concentration in Mineralization Kinetics of Methane in Air and in Aqueous Solutions by Photocatalytic Membranes Immobilizing Titanium Dioxide

Figure 3

Variation of K1 and K2 parameters, expressed in (ppm C)−1 (see kinetic modeling in Experimental), as a function of flow rate (m3 h−1), for photomineralization of methane in air, and experiments carried out at a fixed irradiance corresponding to 0.30 W 𝑘 2 = 0 . 5 7 8 ± 0 . 0 0 7 cm−1. The mean values of k1 and k2 parameters, resulting from modeling of these same experiments, were sensibly constant  ppm C 𝛼 min−1;  ppm C min−1), independently on values of flow rates. Photocatalytic membranes used in the relative experiments did not contain any photopromoting agent.

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