This paper elaborates experimental analysis of cardboard/sawdust briquettes as a viable option for
biomass fuel. Physical–mechanical and thermal characteristics of cardboard/sawdust briquettes were
investigated. The influence of the main parameters on heating content was also examined through an
ANOVA and regression analysis, i.e. pressure influence (that was applied in a punch-and-die process),
cardboard/sawdust ratio influence and finally drying temperature influence. In order to find the maximum
heating value, minimum ash content and maximum compressive strength optimization were done.
The optimal values obtained for the studied briquetting process parameters are a compression force of
588.6 kN, a sawdust mass of 46.66% and a drying temperature of 22 C. According to the mathematical
model obtained, these optimal values give a maximum higher heating value of 17.41 MJ/kg, a minimum
ash content of 6.62% and a maximum compressive strength of 149.54 N/mm. Finally, Cardboard/sawdust
briquettes showed potential for application as viable biomass fuel.
2015 Elsevier