Solar driven advanced oxidation processes for water decontamination and disinfection - Solar Energy Sciences and Engineering Applications - page 409

lower cost, easy operation and maintenance but mainly the opportunity of using a
wide available, cheap and interesting alternative source of energy: the Sun.
Several different applications for both, homogeneous and heterogeneous photo-
catalytic processes, solar driven AOPs have been reported in the past. Some of them are
included in this work as a representative example for applications at laboratory, bench
and full scale of these technologies in the removal of organic pollutants or pathogenic
microorganisms.
An interesting approach analyzed is related with the use of such technologies
coupled sequentially with conventional water and wastewater treatment procedures
or even with other advanced oxidation technologies. As shown, preliminary results
suggest that application of sequential processes, AOPs + conventional, is useful for
the improvement of the performance of conventional water treatment processes,
decreasing costs and generating confidence on the application of non-conventional
technologies.
The analysis carried out, including main highlights in novel solar collection optical
approaches, use of slurry or immobilized photocatalysts, application of doped mate-
rials with radiation absorbance shifted to higher wavelength, have shown that most
research is necessary in order to generate the proper application of such technologies
in the improvement of the environment.

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