Photocatalytic conversion of phenolic compounds in slurry reactors

Photocatalytic oxidation of treated municipal wastewaters for the removal of phenolic compounds: optimization and modeling using response surface methodology (RSM) and artificial neural networks (ANNs)

“…First-order kinetics were also recorded for the degradation and mineralization of phenolic compounds using TiO 2 photocatalysis and other advanced oxidation processes. 12,31 For secondary treated wastewaters half of the TPh was consumed within 26.7 min of irradiation under optimal conditions while the corresponding TOC exhibited a slight decrease, indicating that TOC removal followed a much slower rate than degradation of TPh. These observations indicated the formation of more stable intermediates, which needed long irradiation time to achieve complete removal.…”

Implementation of a venturi photocatalytic reactor: Optimization of photodecolorization of an industrial azo dye

“…Indeed, since the emergence, these last thirty years of photocatalysis, new semi-pilot reactor for the treatment of water and air has been widely developed (Salaices et al, 2004;Zhang et al, 2011;Buechler et al, 1999;McCullagh et al, 2010;Ibrahim and de lasa, 2002). Recently, airlift reactors were used as photobioreactors (Acie´n et al, 2001;Loubie`re et al, 2009;Arbib et al, 2013;Yuan et al, 2011;Degen et al, 2001).…”

Direct Synthesis of Phenol from Benzene over Platinum-loaded Tungsten(VI) Oxide Photocatalysts with Water and Molecular Oxygen

“…1-b, while the phenol production was saturated within 60 min of irradiation accompanied by significant increase of CO 2 generation, suggesting that the once-produced phenol was subsequently oxidized over the photocatalyst. [13][14][15][16][17] As summarized in Table 1, photocatalytic reaction over Pt/WO 3 -K resulted in highly selective phenol production with 79% of selectivity at 22% of benzene conversion in initial period (30 min). Even after the long time irradiation of 240 min, a high selectivity of 74% was still obtained at 69% of benzene conversion (entry 1) along with the production of catechol (2.3%), resorcinol (0.7%) and p-benzoquinone (8.8%), resulting in 85.5% of selectivity for hydroxylated benzene or quinone products from benzene.…”