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 5
Quantum efficiencies (mol/Einstein)
of methane, extrapolated by (17), at infinite concentration of substrate,
evaluated as mean values (black dots) relative to measurements in aqueous
solution and in the gaseous phase, reported in Figure 4, as a function of
absorbed power per unit length of irradiated photocatalytic membrane, expressed
asβWcmβ1. The blue curve represents the calculated contribution of
reaction (b), as modeled in the
present work, decreasing with increasing power. The red curve represents the
calculated contribution of reaction ,
as modeled in the present work, increasing with increasing power. The mauve
curve represents equation modeled in the present work, as a sum of both these
contributions. Photocatalytic membranes used in the relative experiments did
not contain any photopromoting agent.
