Reciclagem de óleo residual de frituras para produção de sabão em Buriti dos Lopes: uma iniciativa sustentável e econômica

Abstract

Vegetable oil used in frying is a notable example of a pollutant when improperly disposed of in the environment. Therefore, it is essential to reduce the inappropriate release of this pollutant, and the production of soap from this waste presents itself as a viable alternative for recycling. This study aims to manufacture soap using residual frying oil collected from snack bars in Buriti dos Lopes-PI, with an emphasis on economic viability and sustainability, seeking to reduce environmental impacts and create a source of income. The methodology adopted for soap production was based on literature reviews, with some modifications. Residual frying oils obtained from two snack bars in Buriti dos Lopes were used, as well as caustic soda and other additives, to facilitate the saponification process. Six different formulations were tested to obtain a quality soap, taking into account consistency, appearance, pH, foaming capacity and emulsifying characteristics. The soaps produced showed positive results, with good foaming performance (with method 3 soap standing out), excellent emulsifying capacity, pH within commercial standards and good economic value, with emphasis on soap 1, which showed the best cost-benefit.