TY - JOUR
T1 - Treatment of chlorinated solvents by TiO2 photocatalysis and photo-Fenton
T2 - Influence of operating conditions in a solar pilot plant
AU - Rodríguez, S. Malato
AU - Gálvez, J. Blanco
AU - Maldonado Rubio, Manuel I.
AU - Ibáñez, P. Fernández
AU - Gernjak, W.
AU - Alberola, I. Oller
PY - 2005/2/8
Y1 - 2005/2/8
N2 - Titanium dioxide photocatalysis (using 200 mg l-1 of TiO 2), under aerobic and anaerobic conditions, and photo-Fenton (2 and 56 mg l-1 iron) were applied to the treatment of different NBCS (non-biodegradable chlorinated solvents), such as dichloroethane, dichloromethane and trichloromethane dissolved in water at 50 mg l-1. All the tests were performed in a 35-l solar pilot plant with compound parabolic collectors (CPCs) under natural illumination. The two solar treatments were compared with attention to chloride release and TOC mineralisation, as the main parameters. Photo-Fenton was found to be the more appropriate treatment for these compounds, assuming volatilisation as a drawback of photocatalytic degradation of NBCS dissolved in water. In this context, several operating parameters related to NBCS degradation, e.g., treatment time, temperature, hydrogen peroxide consumption and volatility of parent compounds are discussed. The correct choice of operating conditions can very often diminish the problem of volatilisation during treatment.
AB - Titanium dioxide photocatalysis (using 200 mg l-1 of TiO 2), under aerobic and anaerobic conditions, and photo-Fenton (2 and 56 mg l-1 iron) were applied to the treatment of different NBCS (non-biodegradable chlorinated solvents), such as dichloroethane, dichloromethane and trichloromethane dissolved in water at 50 mg l-1. All the tests were performed in a 35-l solar pilot plant with compound parabolic collectors (CPCs) under natural illumination. The two solar treatments were compared with attention to chloride release and TOC mineralisation, as the main parameters. Photo-Fenton was found to be the more appropriate treatment for these compounds, assuming volatilisation as a drawback of photocatalytic degradation of NBCS dissolved in water. In this context, several operating parameters related to NBCS degradation, e.g., treatment time, temperature, hydrogen peroxide consumption and volatility of parent compounds are discussed. The correct choice of operating conditions can very often diminish the problem of volatilisation during treatment.
KW - Advanced oxidation processes
KW - Solar photocatalysis
KW - Wastewater treatment
UR - http://www.scopus.com/inward/record.url?scp=11144249274&partnerID=8YFLogxK
U2 - 10.1016/j.chemosphere.2004.09.043
DO - 10.1016/j.chemosphere.2004.09.043
M3 - Article
C2 - 15620730
AN - SCOPUS:11144249274
SN - 0045-6535
VL - 58
SP - 391
EP - 398
JO - Chemosphere
JF - Chemosphere
IS - 4
ER -