ENGINEERING FOR RURAL DEVELOPMENT Jelgava, 28.-29.05.2009. 224 BRIQUETTING DIFFERENT KINDS OF HERBACEOUS BIOMATERIAL

Abstract. The paper analyses the features of producing briquette from different herbaceous biomaterial and cardboard waste and describes the problems that can arise in the pressing operation. The screw press was used. The proper briquette was formed from wheat straw, rye straw and cardboard and the satisfactory one from rye straw together with meadow hay. While the rye straw briquette exhibited the highest calorific value and the lowest ash content, the leaf briquette had the highest ash content and the lowest calorific value. Key words: herbaceous biomass, screw briquette press, solid biofuel, combustion testing parameters