By Marta I. Litter, Roberto J. Candal, J. Martin Meichtry
Advanced Oxidation applied sciences (AOTs) or tactics (AOPs) are fairly new and leading edge applied sciences to take away destructive and poisonous toxins. an important strategies between them are these utilizing gentle, corresponding to UVC/H2O2, photo-Fenton and heterogeneous photocatalysis with TiO2. those applied sciences also are particularly inexpensive and for this reason worthwhile for international locations below improvement, the place the low-cost assets are scarcer than in constructed countries.
This ebook presents a cutting-edge evaluation on environmental functions of complex Oxidation applied sciences (AOTs) as sustainable, inexpensive and low-energy eating remedies for water, air, and soil. It contains details on cutting edge learn and improvement on TiO2 photocatalytic redox approaches, Fenton, Photo-Fenton techniques, zerovalent iron expertise, and others, highlighting attainable purposes of AOTs in either constructing and industrialized international locations around the globe within the framework of “A crosscutting and complete examine environmental problems”.
The booklet is geared toward pros and lecturers all over the world, operating within the components of water assets, water provide, environmental safeguard, and may be an invaluable details resource for choice and coverage makers and different stakeholders engaged on ideas for environmental problems.
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Extra info for Advanced Oxidation Technologies: Sustainable Solutions for Environmental Treatments
Chapter 10 discusses the abatement of nitrate in drinking water through a comparative study of photocatalytic and conventional catalytic technologies. Chapters 3, 14, 16, 17 and 18 describe the preparation and characterization of modified TiO2 materials or other catalysts useful for AOTs/ARTs. The emphasis was put on increasing the photocatalytic activity and on shifting the light absorption edge to higher wavelengths. Other chapters refer to Fenton or photo-Fenton as reactions that use heterogeneous catalysts containing iron or copper supported on different substrates.
Solar radiation, and, therefore, the absorber must be UV-transparent, and ii) temperature higher than ambient does not play any significant role in the photocatalytic process and, therefore, no insulation is required. Contrary to solar thermal processes, which are based on the collection of large quantities of photons of all wavelengths to reach a specific temperature range, solar photocatalysis is based on the collection of only high-energy short-wavelength photons to promote photoreactions (Fig.
Heterogeneous photocatalysis and homogeneous photo-Fenton are based on the use of a wide-band-gap semiconductor and addition of H2 O2 to dissolved iron salts, respectively, and irradiation with UV-VIS light. Both processes are of special interest since sunlight can be used 4 S. Malato et al. 2. com, September 2012 search terms “photocatalysis” (red) and “solar” (blue) within these results). for them. The publications regarding the photocatalytic process rose continuously over the last years, surpassing meanwhile a total number of more than 4500 peer-reviewed publications per year in 2011.