Enhance residual quality: Experimental study of briquettes based on husks and plastic

Abstract

This study aims to determine the characteristics of rice-husk briquettes mixed with plastic waste using three variations of adhesive materials. The main materials of this study were rice husks with a mesh size of 30 and mixed with Polypropylene (PP) plastic waste which had been chopped into small pieces using a composition of 30% plastic waste mixture. Adhesives used were oil, tar, and starch. Printing was performed with a pressure of approximately 120 kg/cm2 with a ratio of adhesive and raw materials of 1:1. This study used 6 types of measurement including volatile matter, ash content, and moisture content with ASTM D1762-84 (2013) standards, fixed carbon ASTM D-3172, ASTM calorific value (2015), and ASTM D2395 specific gravity. Of the three types of briquettes tested, the highest calorific value was 7701.58 Cal/g in rice husks-plastic briquettes with oil adhesive and the lowest was rice husks-plastic briquettes with tar adhesive of 6115.47 Cal/g. The lowest moisture content was found in rice husks-plastic briquettes with oil adhesive of 6.45%. The highest volatile content was rice husks-plastic briquettes with oil adhesive of 74.13%. Then, the highest fixed carbon content was found in rice husk-plastic briquettes with tar adhesives of 11.47% and the lowest ash content was found in rice husk-plastic briquettes with oil adhesive of 13.24%. Then, the highest density was found in 0.91 rice husk-plastic briquettes with starch adhesive. The use of new materials such as plastic waste has increases the heating value of briquettes, which will be further discussed in this article.