Photodecomposition of PCBs absorbed on sediment and industrial waste: implications for photocatalytic treatment of contaminated solids

Optimization of photocatalytic oxidation of 2,2$prime;,3,3$prime;-tetrachlorobiphenyl

“…Although there have been studies on the use of PCO in degrading PCBs, they have tended to focus on mono-or di-chlorobiphenyls [27][28][29][30]. As yet, no study has reported on the use of PCO to degrade highly chlorinated PCBs.…”

“…Several treatment methods-aerobic biodegradation [22][23][24], Fenton's reagent [25,26] and photocatalytic oxidation [27][28][29][30]-have been studied for the remediation of PCB contaminated sites. Photocatalytic oxidation (PCO) uses a semiconductor as a photocatalyst to capture light energy and produce the high oxidizing hydroxyl radical (OH • ) to degrade various compounds.…”

Degradation of aldrin in adsorbed system using advanced oxidation processes: comparison of the treatment methods

“…The resulting positive holes oxidize water to hydroxyl radicals, which oxidize aldrin molecules. Some researchers have also observed that constitutes of soil behaved as cat- alyst for degradation of some organics by UV irradiation [12,[21][22][23].…”

“…A few researchers studied to remove chlorinated organic compounds from adsorbents by AOPs [11,12]. In this study, aldrin adsorbed to activated carbon and Na-montmorillonitte was degraded by using UV/Fe 2+ , UV/Fenton, Fenton, UV/H 2 O 2 advanced oxidation processes.…”

A comparative study of the photochemistry of biphenyl adsorbed on cellulose and silicalite

“…Several sensitizers and other additives have been used to enhance the photolysis under sunlight irradiation [5][6][7][8]. The photocatalytic degradation and mineralization by TiO 2 is one of the most important tools to achieve their destruction [8][9][10]. TiO 2 significantly increases the decomposition rates and dechlorination is the main photoreaction process.…”