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Photocatalysis for the Degradation of Ionic Surfactants in Water: The Case of DPC

Published online by Cambridge University Press:  31 January 2011

Alberto Naldoni ,
Claudia Bianchi ,
Silvia Ardizzone ,
Giuseppe Cappelletti ,
Luca Ciceri ,
Alessandro Schibuola ,
Carlo Pirola  and
Marco Pappini
Alberto Naldoni
Affiliation:
Dipartimento di Chimica Fisica ed Elettrochimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milan, Italy
Claudia Bianchi
Affiliation:
[email protected], University of Milan, Physical Chemistry and Electrochemistry, Via Golgi 19, Milan, Milan, 20133, Italy
Silvia Ardizzone
Affiliation:
Dipartimento di Chimica Fisica ed Elettrochimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milan, Italy
Giuseppe Cappelletti
Affiliation:
Dipartimento di Chimica Fisica ed Elettrochimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milan, Italy
Luca Ciceri
Affiliation:
Dipartimento di Chimica Fisica ed Elettrochimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milan, Italy
Alessandro Schibuola
Affiliation:
Dipartimento di Chimica Fisica ed Elettrochimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milan, Italy
Carlo Pirola
Affiliation:
Dipartimento di Chimica Fisica ed Elettrochimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milan, Italy
Marco Pappini
Affiliation:
C.I.G.A., Via Golgi 19, 20133 Milan, Italy
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Abstract

Traditional techniques to remove contaminants (carbon adsorption, incineration, biological activity and chemical treatment) have a lot of disadvantages. Advanced Oxidation Processes (AOP’s) are used as alternative processes in the degradation of surfactants and in general for wastewater treatment. They are based on the generation of OH•, one of the most powerful oxidant known (E° = 2.73 V) and capable to react non-selectively with any organic compound. In the present work, the degradation of a cationic surfactant (dodecylpyridinium chloride (DPC)) was performed. The photodegradation reaction was investigated both in a slurry reactor and in a vessel where the photocatalyst (P25 by Degussa) was anchored onto an aluminum surface to avoid the final filtration of the powder at the end of the reaction. Moreover a new photoreactor was built on purpose to investigate the influence of the pressure on the degradation process.

Keywords

slurrywaste managementphotochemical
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1171: Symposium S – Materials in Photocatalysis and Photoelectrochemistry for Environmental Applications and H2 Generation , 2009 , 1171-S07-19
Copyright
Copyright © Materials Research Society 2009

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References

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