USING COFFEE PRODUCTION WASTE AS A RAW MATERIAL FOR SOLID FUEL

The article describes the results of experimental studies of solid fuel production from coffee production waste, which by its nature is a mixture of coffee grounds, barley, and chicory. The formation of solid fuel briquetted samples was carried out by pressing under a pressure of 100 kgf/cm(2) for 60 seconds at different temperatures. The higher calorific value of the obtained solid fuel samples and dried initial mixture of spent coffee grounds was determined. The higher calorific value of the briquetted samples is in the range of similar to 22147 divided by 23095 kJ/kg, and that of the dried initial spent coffee grounds mixture is similar to 21583 kJ/kg. The prospective use of the studied raw materials in comparison with existing analogues is shown. The use of a mixture of coffee production waste for the production of solid fuel will solve the problem of excessive production of industrial waste, rationalize their secondary use and avoid the negative impact of their accumulation on the environment.