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Combined photo-assi...
Combined photo-assisted and biological treatment of industrial oily wastewater
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- Mamma, D. (författare)
- National Technical University of Athens
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- Gerontas, S. (författare)
- National Technical University of Athens
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- Philippopoulos, C.J. (författare)
- National Technical University of Athens
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Christakopoulos, Paul (författare)
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- Macris, B.J. (författare)
- National Technical University of Athens
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- Kekos, D. (författare)
- National Technical University of Athens
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(creator_code:org_t)
- 2004
- 2004
- Engelska.
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Ingår i: Journal of Environmental Science and Health. Part A. - 1093-4529 .- 1532-4117. ; 39:3, s. 729-740
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- In the present study an oily wastewater from the lubricant unit of a petroleum company was evaluated by combining the sequence photo-assisted oxidation-Pseudomonas putida DSM 437. The wastewater contained various alcohols, acids and phenolic compounds. From the above mentioned compounds the biodegradation of ethylene glycol, phenol, o-cresol and p-cresol was examined. The direct biodegradation of the wastewater using P. putida DSM 437 resulted in 95% ethylene glycol assimilation while phenol, o-cresol and p-cresol assimilation was in the range of 27% to 40%. In order to increase the degradation of the phenolic compounds photo-assisted oxidation was applied to the wastewater using UV/H2O2 as a pretreatment step to biological degradation. Fe(III) were used in order to accelerate the formation of the hydroxyl radicals and consequently the overall photo-oxidation process. The addition of Fe(III) ions resulted in 30% decrease of COD within the first 10 min while the respected value without iron ions was 5%. he combined photo-assisted oxidation and biodegradation of the wastewater resulted in 100% removal of ethylene glycol. The overall degradation of phenol was 78% while the 59% and 84% of the initial o-cresol and p-cresol respectively, were removed from the wastewater. The-combined process resulted in 72% of COD removal.
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