Análise imediata do líquido da casca da castanha de caju

Abstract

Considering the growing interest in renewable sources and the high energy potential of agro-industrial residues, this study aimed to analyze the physicochemical properties of Cashew Nut Shell Liquid (CNSL), focusing on its application as a biofuel. For this purpose, a proximate analysis was carried out to determine the moisture content, volatile matter, ash, and fixed carbon. The experiments were conducted in the laboratory using a balance, laboratory oven, muffle furnace, and porcelain crucible, following methodologies well established in the technical literature. The results indicated a moisture content of 1.90% and a volatile matter content of 96.66%, both of which are desirable characteristics for the efficient combustion of biomass. The ash content had a value of 0.29%, indicating a reduced presence of inorganic residues after combustion, while the average fixed carbon content was 1.15%. These parameters suggest that CNSL has favorable physicochemical characteristics for energy use; however, further analyses are recommended to confirm its energy and environmental viability.