Abstract
Abstract Photocatalytic disintegration is a novel approach to eliminate pollution. The method utilizes the semiconductor titanium dioxide to degrade organic molecules in the presence of ultraviolet (UV) light. In this study, it is shown how the capabilities of several types of catalyst designs degrade the non-polar substance diesel fuel and the polar substance methylene blue. The floating design of foam glass coated with titanium dioxide could reduce the concentration of diesel fuel by 329 mg/L in 16 h; the submerged designs for coated glass fiber and coated steel grit could reduce methylene blue concentration by 96.6% after 4 h and 99.1% after 6 h, respectively. It could be shown that photocatalysis is a promising cost- and energy-efficient method for managing air and water pollution. It can be established as a low-technology method without requiring the use of a conventional source of energy, given an adequate amount of sun hours, or as an additional cleaning stage in water treatment plants using UV-LEDs.
Highlights
Mineral oil-based pollution of water bodies is a problem worldwide today
Diesel fuel served as a substitute for non-polar pollutants such as petrol-derived hydrocarbons, while the pigment methylene blue was used to investigate the degradability of polar organic substances
The disintegration induced by the photocatalysis of organic substances with titanium dioxide in the presence of UV light was investigated
Summary
Mineral oil-based pollution of water bodies is a problem worldwide today. The sources of pollution are diverse and include roadways, accidents, pollution from shipping, etc. Photocatalytic disintegration with carrier-bound titanium dioxide catalysts provides a practical, low-cost approach for dealing with organic pollution originating from petrol-derived hydrocarbons (Cazoir et al ), pharmaceuticals and their derivates (Schnabel et al ), and even pathogens while possessing self-cleaning capabilities (Cabiscol ).
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