Standardized emissions inventory methodology for open-pit mining areas.

Area of Science:

• Environmental Science
• Atmospheric Science
• Mining Engineering

Background:

• Current methods for quantifying open-pit mining particulate emissions, particularly total suspended particles (TSP), rely on emission factors with known limitations and disputes over applicability.
• There is a recognized need for standardized methodologies to quantify both TSP and fine particulate matter (PM10) emissions.
• Existing practices lack metrics to evaluate the effectiveness of emission control programs in mining operations.

Purpose of the Study:

• To establish a standardized methodology for creating emission inventories of TSP and PM10 for open-pit mining areas.
• To apply this methodology to major open-pit coal mining operations in Colombia.
• To define performance metrics for evaluating emission control programs in mining.

Main Methods:

• Development of a standardized methodology for TSP and PM10 emission inventory.
• Application of the methodology to seven large open-pit mining companies in Colombia.
• Definition and application of performance metrics for emission control programs.

Main Results:

• Transport on unpaved roads identified as the primary source of particulate emissions in open-pit mines.
• Water spraying on unpaved roads demonstrated potential to reduce total particulate emissions by up to 72%.
• Coal open-pit mines emit 0.726 kg TSP and 0.180 kg PM10 per ton of coal produced.

Conclusions:

• The developed methodology provides a standardized approach for quantifying particulate emissions from open-pit mining.
• Effective emission control strategies, such as dust suppression on roads, can significantly reduce environmental impact.
• Established metrics allow for better evaluation and management of emission control programs in the mining sector.