Synthesis, Characterisation and Photocatalytic Tests of Anatase Titanium Dioxide Powders Prepared Via Sol-Gel with Different Chelating Agents and under Different Gelling Pressure Conditions

Heterogeneous photocatalytic degradation of pharmaceuticals in water by using polycrystalline TiO2 and a nanofiltration membrane reactor

Abstract A study of the photodegradation of different pharmaceuticals [furosemide, ranitidine (hydrochloride), ofloxacine, phenazone, naproxen, carbamazepine and clofibric acid] in aqueous medium at various pHs by using a batch photoreactor and a photocatalytic membrane reactor working in recirculation regime was carried out. Polycrystalline TiO 2 was used as the photocatalyst, and different membranes (NTR 7410, PAN GKSS HV3/T, N 30 F, NF PES 10) were tested. A different adsorption of the substrates onto the catalyst surface was observed owing to the hydrophilic/hydrophobic character of the catalyst, depending on the pH. The photodegradation of the seven molecules in the batch reactor was s…

Synthesis, Characterisation and Photocatalytic Degradation of 4-Nitrophenol in Aqueous Phase by Using TiO2 Powders Prepared via Sol-Gel Method under Different Gelling Pressure Conditions

Oxidation of Azo-Dyes in Water by Means of Heterogeneous Photocatalysis in a Membrane Reactor

Study on TiO2 Photocatalytic Membrane Reactors for Purification of Aqueous Media

Photodegradation of Pharmaceuticals in Water Catalyzed by Polycrystalline TiO2 Powder in a Nanofiltration Membrane Reactor

Photo-oxidation of Azo-dyes in Water Catalyzed by TiO2 in a Membrane Reactor

Photocatalytic degradation of dyes by using a membrane reactor

Abstract Dyes are organic compounds used in textile, food and drug industries, and their abatement represents one of the main problems in the treatment processes because generally they are very stable toxic compounds. In this work, two commercial azo-dyes, i.e. Congo Red (C32H22N6Na2O6S2) and Patent Blue (C27H31N2NaO6S2), in aqueous solution were degraded in a photocatalytic membrane reactor by using TiO2 Degussa P25 as the catalyst. Different system configurations and irradiating sources were studied, and the influence of some operational parameters such as the pressure in the membrane cell and the initial concentration of the substrates was determined. A comparison between suspended and e…

Photodegradation of Pharmaceuticals in Water by Using a Nanofiltration Membrane Reactor