The effect of binder material percentage on the compressive strength of the briquette is given in Fig. 6. From Fig. 6, it can be said that kraft paper and newsprint are good binders for the
briquetting of wheat straw. Waste newsprint is the targeted source of cellulosic fibre, but it can be also used fibre from industrial paper wastes. Waxed or plastic coated papers or boards are more dicult to break down and require special treatment before they can be incorporated into the briquette mixture.