Treatment system for solid matrix contaminated with fluoranthene. II––Recirculating photodegradation technique

Remediation of soils contaminated with polycyclic aromatic hydrocarbons (PAHs)

“…Additionally, the presence of humic acid in soil was found to enhance PAH photocatalytic degradation by sensitising radicals capable of oxidising PAHs. Rababah and Matsuzawa [88] developed a recirculating-type photocatalytic reactor assisted by the oxidising agent H 2 O 2 solution to treat soil spiked with fluranthene. It was observed that the degradation efficiency of fluoranthene was 99% in the presence of both TiO 2 and H 2 O 2 compared to a lower degradation efficiency of 83% in the presence of TiO 2 alone.…”

Photodegradation of pyrene on soil surfaces under UV light irradiation

“…The main processes which successfully remove and eliminate PAHs from the environment include: microbiological transformation and degradation, volatilization, photo-oxidation, chemical oxidation, bioaccumulation and biological uptake [6,7]. However some of the HMW PAHs are recalcitrant, as biological processes are always ineffective in removing them.…”

Photooxidation of Polycyclic Aromatic Hydrocarbons over NaBiO3 under Visible Light Irradiation

“…Recently, photocatalytic reactions over semiconductors have been applied to remove such organic pollutants, which can utilize the inexpensive and inexhaustible solar energy [7][8][9][10][11][12][13][14][15]. Almost all of the semiconductor photocatalysts available so far for PAHs photocatalytic decontamination are dominated by titania (TiO 2 ) [7][8][9][10][11][12][13][14].…”

“…Almost all of the semiconductor photocatalysts available so far for PAHs photocatalytic decontamination are dominated by titania (TiO 2 ) [7][8][9][10][11][12][13][14]. Even though TiO 2 is a chemically and biologically inert, photostable and cheap photocatalyst, it has a fatal drawback that it absorbs only UV light, and therefore it can only utilize less than 5% of solar energy.…”