A combined solar photocatalytic-biological field system for the mineralization of an industrial pollutant at pilot scale

Oller, I., Malato, S., Sanchez-Perez, J. A., Gernjak, W., Maldonado, M. I., Pérez-Estrada, L. A., Pulgarín, C. and Ross, J.R.H (2007) A combined solar photocatalytic-biological field system for the mineralization of an industrial pollutant at pilot scale. Catalysis Today, 122 1-2: 150-159.


Author Oller, I.
Malato, S.
Sanchez-Perez, J. A.
Gernjak, W.
Maldonado, M. I.
Pérez-Estrada, L. A.
Pulgarín, C.
Ross, J.R.H
Title A combined solar photocatalytic-biological field system for the mineralization of an industrial pollutant at pilot scale
Journal name Catalysis Today   Check publisher's open access policy
ISSN 0920-5861
1873-4308
Publication date 2007-04-15
Sub-type Article (original research)
DOI 10.1016/j.cattod.2007.01.041
Volume 122
Issue 1-2
Start page 150
End page 159
Total pages 10
Place of publication Amsterdam, The Netherlands
Publisher Elsevier Science
Language eng
Subject 090409 Wastewater Treatment Processes
Abstract A coupled solar photocatalytic-biological pilot plant system has been employed to enhance the biodegradability and complete mineralization of a biorecalcitrant industrial compound, α-methylphenylglycine, dissolved in distilled water and simulated seawater at 500 mg L−1. The pollutant was completely degraded by a solar photo-Fenton treatment in a 75-L pilot plant made up of four compound parabolic collector (CPC) units. The catalyst concentration employed was 2 and 20 mg L−1 of Fe2+ and the H2O2 concentration was kept in the range of 200–500 mg L−1. A Zahn–Wellens (Z–W) test applied to photo-treated samples demonstrated that intermediates produced within a short time of starting the photo-Fenton process were biodegradable. Consequently, the photocatalytic and biological processes were combined. Biodegradable compounds generated during the preliminary oxidative process were biologically mineralized in a 170-L aerobic immobilised biomass reactor (IBR), filled with 90–95 L propylene Pall® Ring supports colonized by activated sludge. Almost total mineralization (90% overall total organic carbon removed) was attained in the combined treatment system (for both distilled and seawater experiments). Moreover, nitrification and denitrification phenomena were also observed.
Keyword Photocatalysis
Photo-Fenton
Immobilised biomass reactor
a-methylphenylglycine
Biodegradability
Nitrification
Denitrification
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Advanced Water Management Centre Publications
 
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