Production and Characterisation of Coffee Husk Briquette

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@article{1713594,
      author = {Yusuf, T. I., Adesokan, M. A., Adeleke, S. A.; Mofolasayo, A. S., Adesokan, M. A.; Ekemube, R. A., Jimeshio, J. G.; Muhammad-Bashir, O. W.},
      title = {Production and Characterisation of Coffee Husk Briquette},
      journal = {Iconic Research And Engineering Journals},
      year = {2026},
      volume = {9},
      number = {7},
      pages = {1519-1527},
      issn = {2456-8880},
      url = {https://www.irejournals.com/formatedpaper/1713594.pdf},
      abstract = {The study investigates the production and characterization of coffee husk briquettes using cassava starch as a natural binder to develop an efficient, renewable, and eco-friendly alternative to conventional fuels. Coffee husk, an abundant agro-waste from coffee processing, was combined with cassava starch in varying ratios (0%, 10%, and 20%) to enhance fuel quality and mechanical properties. The briquettes were produced using a hydraulic densification process and evaluated for mechanical strength, proximate composition, and combustion performance in accordance with ASTM standards. Results revealed that increasing the binder content improved the briquette?s relaxed density, shatter resistance, and water resistance, with the highest density (671.2 kg/m?) recorded at a binder content of 20%. Proximate analysis revealed a decrease in moisture and volatile matter, accompanied by an increase in fixed carbon and calorific value, as the binder ratio increased. The optimal calorific value of 29.08 MJ/kg obtained at 20% binder closely compares with that of conventional charcoal (31.38 MJ/kg), confirming the high energy potential of coffee husk briquettes. Furthermore, combustion tests showed that higher binder ratios prolonged ignition time but enhanced burning stability and reduced ash formation. The study concludes that coffee husk briquettes bound with cassava starch exhibit desirable physical and combustion characteristics, making them suitable for both domestic and small-scale industrial applications. Adopting this technology could mitigate deforestation, reduce dependence on fossil fuels, and promote sustainable waste-to-energy conversion, especially in coffee-producing regions. Thus, coffee husk briquetting presents a practical pathway toward renewable energy utilization and environmental sustainability.},
      keywords = {Coffee husk briquette; Cassava starch binder; Renewable fuel; Calorific value; Sustainable energy; Agro-waste utilization; Environmental sustainability},
      month = {January},
      doi = {https://doi.org/10.64388/IREV9I7-1713594}
  }