Biofuel pellets from spent coffee grounds

Abstract The research is aimed at solving the urgent problem of food industry waste disposal on the example of using spent coffee grounds. The storage of coffee industry waste leads to the loss of potentially valuable raw materials. As one of the most promising solutions, this article considers the use of coffee grounds as the main component for fuel composition with the addition of a binder in the form of crushed cardboard and paper waste. The elemental composition, physical and mechanical properties of fuel pellets and the highest specific heat of coffee biomass and fuel composition based on it were determined in the laboratory studies. It is shown that the waste from coffee production is low in ash and has a high fuel cell content, as well as a high specific heat of combustion. The use of spent coffee grounds as raw materials for biofuel pellets production can be considered as an effective way of processing spent coffee grounds and increasing the value of coffee industry waste.