Comparison of UV/H2O2 based AOP as an end treatment or integrated with biological degradation for treating landfill leachates

Abstract

The application of a biological treatment together with a chemical oxidation process was investigated. Inparticular, the effectiveness of the biological treatment followed by a UV/H2O2-based advanced oxidationprocess (AOP) used as an end treatment was compared with that in which the same AOP was integratedwith biological degradation for treating a medium age sanitary landfill leachate.The results show that better performance with removal efficiencies higher than 80% for all investigatingparameters was obtained when AOP was integrated with the biological treatment, thus allowing thedischarge limits to be met. This was due to the biological removal of the biodegradable compounds producedby UV/H2O2 treatment. Instead, UV/H2O2-based AOP biodegradability enhancement gave noadvantage when it was used as an end treatment. Finally, the results show that H2O2 alone (i.e., withoutUV power) was quite ineffective either as a mineralizing or as a biodegradability enhancing agent andthat the only reactive species was essentially the hydroxyl free radical OH.


Tutti gli autori

  • Del Moro G.; Mancini A.; Mascolo G.; Di Iaconi C.

Titolo volume/Rivista

Chemical engineering journal


Anno di pubblicazione

2013

ISSN

1385-8947

ISBN

Non Disponibile


Numero di citazioni Wos

Nessuna citazione

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Numero di citazioni Scopus

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Settori ERC

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Codici ASJC

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