Great stress on energy demands has been imposed due to continuously increasing population, focusing all attention to alternate sources of energy. In this context, briquetting presents efficient utilization of biomass as a source of energy and fuel. The process of briquetting is based on the densification of loose biomass available as agricultural residues, municipal as well as paper waste etc. This leads to increased calorific value by the elimination of volatile matter and gives a solid fuel which is easy to transport and store and helps to curb environmental pollution also. This review has reported various technologies being used to make briquettes like screw extrusion, hydraulic press, piston presses etc. To popularize this technology, new machines and new challahs designs, optimization of different parameters like compression temperature, pressure, feedstock availability etc. has been discussed. Awareness can be imparted among people for maximum utilization of biomass briquettes to save fuel for future and for sustainable energy production.
