Process design for wastewater treatment: catalytic ozonation of organic pollutants.
Emerging micropollutants have been recently the target of interest for their potential harmful effects in the environment and their resistance to conventional water treatments. Catalytic ozonation is an advanced oxidation process consisting of the formation of highly reactive radicals from the decomposition of ozone promoted by a catalyst. Nanocarbon materials have been shown to be effective catalysts for this process, either in powder form or grown on the surface of a monolithic structure. In this work, carbon nanofibers grown on the surface of a cordierite honeycomb monolith are tested as catalyst for the ozonation of five selected micropollutants: atrazine (ATZ), bezafibrate, erythromycin, metolachlor, and nonylphenol. The process is tested both in laboratorial and real conditions. Later on, ATZ was selected as a target pollutant to further investigate the role of the catalytic material. It is shown that the inclusion of a catalyst improves the mineralization degree compared to single ozonation.
Veolia Environnement Recherche et Innovation, Centre de Recherche de Maisons Laffitte, Chemin de la digue - B.P. 76, 78603 Maisons Laffitte Cedex, France E-mail: salim.derrouiche@veolia.com.
S
S
Derrouiche
D
D
Bourdin
P
P
Roche
B
B
Houssais
C
C
Machinal
M
M
Coste
J
J
Restivo
J J M
JJ
Orfão
M F R
MF
Pereira
Y
Y
Marco
E
E
Garcia-Bordeje
D000081:Acetamides / Q000737:chemistry; D001280:Atrazine / Q000737:chemistry; D001629:Bezafibrate / Q000737:chemistry; D002244:Carbon / Q000737:chemistry*; D002384:Catalysis; D002516:Ceramics / Q000737:chemistry*; D004917:Erythromycin / Q000737:chemistry; D057139:Nanofibers / Q000737:chemistry*; D016877:Oxidants / Q000737:chemistry*; D010126:Ozone / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods; D014874:Water Pollutants, Chemical / Q000737:chemistry*
D000081:Acetamides; D016877:Oxidants; D010636:Phenols; D014874:Water Pollutants, Chemical; C055335:cordierite; D004917:Erythromycin; D010126:Ozone; D002244:Carbon; C041594:4-nonylphenol; D001280:Atrazine; C051786:metolachlor; D001629:Bezafibrate