Nonlinear Modelling of Kinetic Data Obtained from Photocatalytic Mineralisation of 2,4-Dichlorophenol on a Titanium Dioxide Membrane
Figure 3
TOC concentrations, , in mgL-1,
obtained by calculation from COD measurements, as a function of time t, in minutes, for a kinetic run, starting
from a DCP concentration of 84 ppm, expressed as carbon, during which
measurements of the decrease of organic substances, either substrate or
intermediates, versus time t, expressed in minutes, was measured by the
COD method. Absorbed radiation power per unit membrane length was 1.50 Wcm-1 and overall reacting volume 4.0 L. In the laboratory-scale photoreactor (see Experimental), standard
photocatalytic membranes, immobilising 30 wt.% of P-15 titanium dioxide, were
employed. The curve reported in this figure is that simulated by the four-parameter
kinetic model, used in the present work, at the same initial concentration of
DCP, and at the same radiating power (see Table 1).
