This reactor immobilized with titanium dioxide, and having a 50 m
2 of exposed
area with a combination of two bioreactors, was installed in Tunisian textile mill to
decolorize water (Spasiano et al. 2015) and has also been used for transformation of
1,1-dicarbonitrile through dicyano tetramethyl benzene as the electron acceptor
(Will et al. 2004).
11.9.2 Parabolic Trough Collectors
The design of parabolic trough collectors (Fig. 11.7) is inspired from thermal energy
application derived from the sun. Parabolic trough collector contains a reflective
Effluent inlet
Pump
Recycle
Effluent outlet
Photocatalyst
Fig. 11.6 Interaction of
fluid over photocatalyst
immobilized surface of
non-concentrating collector
reactor operated in
continuous recycle mode.
(Modified after Bahnemann
2004)
Fig. 11.7 Parabolic trough
collectors composed of a
parabolic trough-shaped
concentrator that reflects
direct solar radiation onto a
receiver or absorber tube
located in the focal line of
the parabola. (Modified after
Spasiano et al. 2015)
11 Solar Photocatalytic Treatment of Tannery Effluents
379