Influence of control parameters in VOCs evolution during MSW trimming residues composting

J Agric Food Chem. 2011 Dec 28;59(24):13035-42. doi: 10.1021/jf2036017. Epub 2011 Nov 17.

Abstract

The influence of control parameters (aeration, moisture, and C/N ratio) during composting of a municipal solid waste (MSW)-legume-trimming residue (LTR) mixture was studied at a pilot plant scale. Factors measured included the composition of the main volatile organic carbons (VOCs) emitted including limonene, β-pinene, 2-butanone, undecane, phenol, toluene, and dimethyl disulfide. Polynomial models were found to reproduce the experimental results with errors at less than 10%. The relative influence of the independent variables on temperature and selected VOCs followed the order: aeration > moisture > C/N. A high aeration rate results in higher (strong negative effect) values on selected VOCs emissions (41-71% on emitted VOCs variation). Moisture had a positive and negative effect depending on the selected VOCs. A high C/N ratio caused lower production of VOCs except for undecane and 2-butanone. Providing an aerobic environment (0.05 Lair kg(-1) min(-1)), high C/N ratios (>50), and medium moisture (55%) minimize emitted VOCs during MSW composting, ultimately resulting in less odors in the surrounding environment.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbon / analysis
  • Environmental Pollution / prevention & control
  • Nitrogen / analysis
  • Odorants / analysis
  • Oxygen / administration & dosage
  • Refuse Disposal / methods*
  • Soil / chemistry*
  • Temperature
  • Volatile Organic Compounds / analysis
  • Volatile Organic Compounds / chemistry*
  • Water / analysis

Substances

  • Soil
  • Volatile Organic Compounds
  • Water
  • Carbon
  • Nitrogen
  • Oxygen