Potential odour emission measurement in organic fraction of municipal solid waste during anaerobic digestion: Relationship with process and biological stability parameters

V. Orzi, E. Cadena, G. Dimporzano, A. Artola, E. Davoli, M. Crivelli, F. Adani

Research output: Contribution to journalArticle

Abstract

The aim of the present study is to investigate the correlation between microbial activity, i.e.,biological stability measured by aerobic (OD20 test) and anaerobic tests (ABP test), and odour emissions of organic fraction of municipal solid waste during anaerobic digestion in a full-scale treatment plant considering the three stages of the process (input, digested and post-digested waste). The results obtained indicated that the stabilization of the treated material reduces the odour impact measured by the olfactometric approach. Successive application of gas chromatography mass spectrometry (GC-MS) and electronic nose (EN) allowed the characterization of the different groups of volatile organic compounds (VOCs) responsible of odour impacts determining, also, their concentration. Principal component and partial least squares analyses applied to the EN and GC-MS data sets gave good regression for the OD20 vs the EN and OD20 vs the GC-MS data. Therefore,OD20 reduction could be used as an odour depletion indicator.

Original languageEnglish
Pages (from-to)7330-7337
Number of pages8
JournalBioresource Technology
Volume101
Issue number19
DOIs
Publication statusPublished - Oct 2010

Keywords

  • Anaerobic digestion
  • Biological stability
  • Electronic nose
  • GC-MS
  • Odours

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Waste Management and Disposal

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