What question did this study set out to answer?

The aim is to assess the potential for electricity generation from effluent gases produced during charcoal production.

February 5, 2026ProcessesOpen Access

Energy Recovery of Gases from Charcoal Production: Potential, Available Technologies, Costs, Sustainability, and Its Contribution to the Energy Transition in Brazil

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This work evaluates power generation potential from charcoal gases in Minas Gerais, indicating challenges for sustainability efforts.

The aim is to assess the potential for electricity generation from effluent gases produced during charcoal production.
Evaluated potential energy recovery from charcoal production using database analysis.
Assessed three technologies: Steam Rankine Cycle, Organic Rankine Cycle, and Externally Fired Gas Turbine.
Calculated energy efficiencies for each technology based on local producers' data.
Conducted economic analysis considering Brazilian electricity auction prices and sensitivity of variables.
Generated up to 1348 GWh/year from regenerative and superheated ORC using n-decane.
Found efficiencies for power capacities ranging from 5% to 24% for generators between 100 kW and 2000 kW.
Identified that plants under 10 MW are economically unfeasible based on current conditions.
Estimated emissions of 2437.7 kg CO2eq per ton of charcoal, with potential for a 57% reduction through sustainable practices.

Oliveira et al. (2026) studied this question.

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