AEST Agricultural Waste Charcoal Briquettes
Appropriate Energy Saving Technologies Limited
Distributed in Uganda, AEST briquettes are made from various recycled agricultural wastes and ready for a single use.
Made and sold by Appropriate Energy Saving Technologies Limited, AEST Agricultural waste briquettes are charcoal briquettes from various recycled agricultural wastes.
AEST is based in Soroti, Uganda.
There are various briquettes being sold in Uganda. However, AEST is the only company producing and selling briquettes with the materials they use. Interview with representative
Low-income households in Uganda.
Mass produced using a specially constructed motorized extruder using an old meat grinder.
Not IP Protected, however, it is the first briquette of its kind in Uganda. AEST created their own briquette press and they are the only producers using the specific agricultural wastes they use.
Women in Uganda distribute the briquettes. Customers can come to the local shops, or may go straight to the production site to purchase them in Uganda. AEST also takes orders for mass quantities.
Over 50,000 kg of charcoal. Over 1,000 individual households, 2 orphanages, 15 schools, 40 restaurants, and 10 hotels have used this product.
What is the material composition of the fuel (e.g. ethanol, biogas, agricultural residues, etc.)
MJ/kg, energy content per gram
What are the main pollutants when the fuel is combusted? (e.g. CO, PM2.5)
Diameter: 5 cm
Length: 20 cm
Weight (kg): 0.05 – 0.10
Provided by the manufacturer
Single use product.
N/A, single use product
Smokeless and sootless and 40-50% energy conserved.
Guidelines provided by AEST must be followed when manipulating the product.
AEST also produces and distributes its own clean cooking stove to go with the briquettes it produces to enhance the efficiency and reduce emissions.
O’Neill, M., Wagner, A (2017). Wear-Resistant Extrusion Auger for the Production of Charcoal Briquettes from Agricultural Waste. Mechanical Engineering Senior Thesis. Santa Clara University.
Wang, L (2016). The identification and validation of case hardening for extending charcoal briquette extruder lifespan. Massachusetts Institute of Technology. Department of Mechanical Engineering.
Further academic research is here.
MIT D-Lab has conducted various tests on the briquettes, including: moisture content, ash content, indoor air quality measurements, and emissions. AEST also conducted field testing to gain feedback from the community to determine the likelihood of the product being adopted by the communities.
AEST’s awards and recognition here.
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