Evaluation of biomass materials as energy sources: Upgrading of tea waste by briquetting process

Tea waste was briquetted at ambient and elevated temperatures in a calibrated laboratory hydraulic press using a punc and die set for 5-30 minutes under pressures of 300-800 MPa. The Effects of the briquetting pressure on the density, the moisture content, and the compressive strength of the briquetts were examined at different pressures. The optimum moisture contents and compressive strengths were found to be 15-18% and 36.2-37.1 MPa for tea waste samples. The effect of the briquetting temperature and time on the briquette density of tea waste were determined.