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Related Concept Videos

Volatilization01:10

Volatilization

362
Volatilization gravimetry is an analytical technique that measures the mass lost due to the volatilization of the substance. This technique is used to estimate the amount of volatile material in a sample. To perform this method, heat a known amount of the sample to a high temperature in a crucible or other suitable vessel. The volatile substance in the sample evaporates, and the vapor is completely expelled from the crucible either by heating the sample or bubbling a stream of inert gas through...
362

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Design and Use of a Full Flow Sampling System FFS for the Quantification of Methane Emissions
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Validation and demonstration of a drone-based method for quantifying fugitive methane emissions.

C Scheutz1, J E Knudsen2, N T Vechi1

  • 1Department of Environment and Resource Engineering, Technical University of Denmark (DTU), Kgs. Lyngby, Denmark.

Journal of Environmental Management
|December 6, 2024
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Summary

This study validates a drone-based method for measuring methane (CH4) emissions, showing accurate results comparable to traditional methods. The drone flux method (DFM) offers a reliable approach for industrial emission assessments.

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Area of Science:

  • Environmental Science
  • Atmospheric Chemistry
  • Remote Sensing Technology

Background:

  • Accurate assessment of fugitive methane (CH4) emissions is crucial for understanding industrial impacts and developing mitigation strategies.
  • Drone-based measurement techniques are emerging but require validation for accuracy and reliability.
  • Challenges remain in integrating atmospheric gas concentration and wind vector measurements from drones.

Purpose of the Study:

  • To validate and demonstrate a drone-based method for simultaneously measuring atmospheric gas concentrations and wind vectors.
  • To assess the accuracy and reliability of the drone flux method (DFM) for quantifying methane emissions from various source types.
  • To compare DFM performance against established methods like the tracer gas dispersion method (TDM).

Main Methods:

  • Development and testing of a drone-based system for simultaneous gas concentration and wind vector measurement.
  • Validation using controlled methane release tests simulating ground-based and elevated sources.
  • Field application at a biogas plant, comparing DFM results with simultaneous TDM measurements.
  • Analysis of wind sensor placement to minimize interference and assessment of wind measurement reliability.

Main Results:

  • Drone-based wind measurements showed good agreement with ground-based mast measurements.
  • DFM quantified controlled methane releases with error rates between +33% and -35%.
  • Biogas plant methane emissions measured by DFM (25.3 ± 6.2 kg h⁻¹) closely matched TDM results (25.7 ± 4.4 kg h⁻¹).
  • Increased number of flights reduced uncertainty in DFM quantification.

Conclusions:

  • The drone flux method (DFM) is a validated and reliable approach for assessing methane emissions from industrial sources.
  • Accurate wind speed assessment is critical for minimizing errors in emission determination.
  • DFM offers a promising alternative or complementary tool to existing methods for fugitive emission monitoring.