Aproveitamento da casca de coco e podas de árvores no processo de briquetagem.

Abstract

Humanity has caused negative environmental impacts contributing to waste generation, without proper planning. Studies indicate that the use of lignocellulosic residues has been considered as a promising alternative for energy conversion, in the form of briquettes, providing advantages for the environment and society. So, this work aimed to evaluate the potential of lignocellulosic residues, coconut shells and tree prunings, in different proportions with and without addition of agglutinative, in order to know the best composition during compacting. Ten types of compositions were made with and without the presence of agglutinative (frying oil), and after being densified, under pressure and temperature of 130 °C for 10 min, individually with three replicates each, these were analyzed by physical parameters physical, chemical and mechanical. The results showed that briquettes constituted with a higher composition of tree pruning without the binder, frying oil, presented low moisture and ash content and high content of volatile materials, favoring the burning power, while briquettes with added agglutinative caused poor agglutination, therefore, there is no interaction between the particles, favoring the appearance of fissures. However, the treatments with higher coconut shell predominance indicated good compaction with and without agglutinative, however, they obtained high ash and moisture content, compromising the combustion process. Finally, both biomasses add particular characteristics to the briquette, being more satisfactory to incorporate polar binders than apolar, since it allows better interaction between the particles.