Membrane technology plays an increasing role in air and water

treatment processes, while photocatalysis is an advanced oxida-

tion technique with promising opportunities of applications in the

treatment of polluted air (Mo et al., 2009) or water (Herrmann, 1999). Hybrid photocatalysis-membrane systems with different

possible configurations are also intensively investigated in the

last few years (Molinari et al., 2002a, 2002b; Mozia et al., 2009; Ollis, 2003).