Study of Process Densification of Corn Cob and Corn Husk Briquettes by Cold Extrusion Technique Using Starch with Lime Mixed as Binder

Abstract

This research to study of production of corn residues are corn cob and corn husk by means of extrusion technique in cold compression which employed cassava paste mix lime for binder. With this research, it intended for raw material fraction of 80:20, 50:50 and 20:80. The binder mixed cassava paste with lime of 1:2, 1:1 and 2:1. It mixed with raw materials of 20, 30 and 40%wt. According to study, it was found the optimum of raw material fraction of 20:80, binder mixed of 1:2, raw material mixed of 20%wt. It was raw materials briquette density of 940 kg/m³, the heating value of 12.77 MJ/kg, biomass stove thermal efficiency of 16.31%. The economic evaluated briquette corn residue system have to fixed cost of 203,000 Baht, variable cost of 361,061 Baht per year, payback period of 3.44 years. So, the corn residues has highly potential for biomass conversion to biomass briquette.