The use of still vinasse as a biofertilizer

Abstract

This study aims to demonstrate, through quantitative methods, analyzing parameters such as the levels of sodium, potassium, lithium, and magnesium using flame photometry and laboratory-scale fermentation with Saccharomyces cerevisiae yeasts, the benefits of using vinasse, a byproduct generated during ethanol production from sugarcane juice (garapa) fermentation. Vinasse is a viscous, strongly odorous byproduct left after the fractional distillation of fermented juice. When applied in agriculture, especially in regions with high production of artisanal cachaça, vinasse presents itself as an advantageous alternative for small-scale farmers. Its high mineral concentration helps correct nutritional deficiencies in the soil, making it an accessible and effective biofertilizer option, particularly for low-income producers. Furthermore, its proper use can generate environmental benefits by transforming a potentially polluting waste into a useful resource. As long as soil characteristics, water source locations, and application volumes are taken into account, vinasse does not present negative impacts, contributing sustainably to agriculture.