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DOI: 10.4018/979-8-3693-9924-8.ch023
Chapter 23
Studies on Biomass Briquettes
Production From Organic
Waste Feed Stocks in Bule
Hora Town, Ethiopia
Pitta Sekhar
https://orcid.org/0000-0002-8031-6237
Bule Hora University, Ethiopia
Kiyar Jemal Abdo
https://orcid.org/0000-0002-4613-7737
Arsi University, Ethiopia
ABSTRACT
This study assessed biomass briquettes as a sustainable energy alternative in Bule Hora town, Ethiopia,
addressing waste and traditional biomass reliance. Feedstocks (coffee husks, sawdust, maize cobs, and
waste paper) were carbonized and compacted. Briquette properties were analyzed using ASTM stan-
dards, with ANOVA, regression, and RSM applied for optimization. Maize cobs had the highest calorific
value (1820.54±0.37 kcal/kg). Carbonized briquettes excelled in density (0.61 g/cm
3
) and calorific value
(4670.92 kcal/kg). Compression pressure, binder content, and carbonization temperature significantly
impacted performance (p < 0.01). Optimal conditions: 12 MPa pressure, 11% binder, 450°C tem-
perature, and 16% moisture. Surveys showed 70% willingness to adopt briquettes for reduced pollution
and cost savings, despite awareness and market challenges. Biomass briquetting offers a solution to
deforestation, energy security, and waste management, recommending scaled production, optimized
processes, and awareness initiatives.
INTRODUCTION
In developing countries, where energy poverty remains a pressing issue, the reliance on traditional
biomass fuels such as firewood and charcoal has placed significant pressure on natural resources, leading
to environmental degradation and adverse health effects. Biomass briquettes, compacted blocks of organic