Biomass briquettes

What is it?

Biomass briquettes, sometimes known as ‘green charcoal’ or ‘organic briquettes’ are a fuel made from organic waste.   They can be used as an alternative to firewood and charcoal.  Briquettes can be made from different types of organic waste from sawdust to banana peelings to agricultural waste.  The specific waste used has an impact on the calorific value of the briquettes.

The manufacture of biomass fuel briquettes from waste materials for domestic, institutional and small business use represents a huge opportunity to create jobs and stem the destruction of woodlots for charcoal.

How do you make briquettes?

Broadly speaking, there are two types of briquettes that can be produced – carbonised and non-carbonised, and there are various shapes and sizes that can be made, depending on whether they will be used at the household, institution or industry level.

Briquettes are made primarily of three ingredients which are: char from waste, binder and filler all applied in the right ratios.

The stages of organic briquette making are as follows:

  1. Waste collection
  2. Waste sorting in order to eliminate any unsuitable items from the collected organic waste
  3. Pre-production drying (either sun drying, damp drying or using generated heat and smoke) to produce char
  4. Mixing the char, binder and filler
  5. Compacting and shaping
  6. Post-production drying
  7. Use and sales

Tools needed to produce briquettes include a charring drum, briquette press machines and raw materials.

Useful resources:

Below are some links to further information and resources. If you can’t find what you need, please feel free to contact us directly.

Living Earth – Biomass briquettes info sheet PDF

http://www.ashden.org/briquettes

http://www.gvepinternational.org/en/business/briquettes

Briquette Presses PDF

Briquette Businesses in Uganda PDF

Issues of Gasification in briquette making PDF

Urban Harvest – Briquette production in Nairobi PDF