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Detection of odour emissions from a composting facility using a QCM sensor array.

A S Yuwono1, P Boeker, P Schulze Lammers

  • 1Department of Agricultural Engineering, University of Bonn, Nussallee 5, 53115 Bonn, Germany. ayuwono@uni.bonn.de

Analytical and Bioanalytical Chemistry
|May 7, 2003
PubMed
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A quartz crystal microbalance (QCM) sensor array effectively detected odour emissions during composting. Principal component analysis revealed two components explained over 90% of the data variance, simplifying odour monitoring.

Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Sensor Technology

Background:

  • Odour emissions from composting facilities pose environmental challenges.
  • Accurate detection of these odours is crucial for effective management.
  • Existing monitoring methods may lack sensitivity or real-time capabilities.

Purpose of the Study:

  • To evaluate the efficacy of a quartz crystal microbalance (QCM) sensor array for detecting odour emissions from a composting facility.
  • To assess the sensor array's performance under field conditions.
  • To determine the potential of data analysis techniques for simplifying complex sensor data.

Main Methods:

  • Utilized a six-element QCM sensor array with varying coating materials.
  • Conducted field tests at a composting facility, focusing on the compost-turning period.

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  • Employed principal component analysis (PCA) for data reduction and pattern recognition.

    • Main Results:

    • Significant sensor frequency changes were observed correlating with the compost-turning events.
    • PCA demonstrated that two principal components could explain over 90% of the sensor data variance.
    • The QCM sensor array showed sensitivity to dynamic odour release during composting.

    Conclusions:

    • QCM sensor arrays are a viable technology for monitoring composting odours.
    • PCA effectively reduces the dimensionality of QCM sensor data, facilitating analysis.
    • This approach offers a promising method for real-time odour emission assessment in composting operations.