Compound parabolic collectors photoreactor

In a study on the photodegradation of lincomycin Augugliaro et al. [40] reported the use of a hybrid system consisting of a solar photoreactor with the catalyst suspended coupled with a membrane module. The photo-oxidation experiments were performed in a batch solar photoreactor at pilot plant scale by using compound parabolic collectors (CPC), installed at the Plataforma Solar of Almeria . 

Immobilisation of Ti02 on solid supports appears to be an attractive alternative avoiding the separation step in photocatalysis. Immobilisation of titanium dioxide has been adapted to a pilot scale solar photoreactor in a compound parabolic collector (CPC), and shown to be effective on the degradation and mineralisation of phenol and some emergent contaminants in a municipal effluent [57, 76]. 

Fig. 7.3 Main types of photoreactors used for water and wastewater treatment (irradiated by sun or UV lamps) (a) compound parabolic collector (CPC) (b) parabolic trough reactors (PTR) (c) double-skin sheet reactor (DSSR) (d) slurry, wall, fixed bed reactor (e) batch reactor with outer source of irradiation and (f) batch reactor with inner source of irradiation...

Vidal et al. presented the first pilot-plant study about solar photocatalysis for bacterial inactivation. Researchers constructed a new low-cost compound parabolic concentrator (CPC) prototype containing solar collector (Pyrex photoreactor tubes, aluminum reflective surface), flowmeter, pump, sensors (pH, O, T, UV radiation), pipes, fittings, and tanks (PVC). This solar photoreactor has an area of 4.5 m and it was tilted at local latitude to maximize the available solar irradiation. It was observed 5-log reduction for E. coli and Enterococcus faecalis (initial concentration lO -lO" CFU/cm ) after 30 min of solar irradiation (solar UV value 25 W/m )... 

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