Transport and surface reaction model of a photocatalytic membrane during the radical filtration of methylene blue

This study explores the synergy between photocatalytic oxidation and membrane filtration using a membrane. Titanium dioxide coated alumina membranes were fabricated tested in customized Photocatalytic Membrane Reactor (PMR) module. The discoloration of methylene blue (MB), 3.2 mg·L−1 an aqueous solution, was evaluated dead-end mode. A simple 1D analytic transport surface reaction model used based on advection diffusion, containing intrinsic retention by kinetics to predict permeate concentration. MB could be well described single rate constant (second Damköhler number) for fluxes from 1.6 16.2 L·m−2·h−1. furthermore indicates potential retention, which leads increased concentration, accompanying conversion, at surface.