2025-07-072025-07-072024https://repositorio.ifal.edu.br/handle/123456789/1038The process of producing ethanol from sugarcane is essential to Brazil’s energy mix. In the mills, the sugarcane is harvested and crushed, producing juice that, after fermentation, is converted into ethanol. However, distillation also produces vinasse, a residue that, for a long time, was seen as a waste problem. Today, we recognize its importance: vinasse is used in the fertigation of sugarcane fields, providing the soil with vital nutrients, such as potassium and sulfur. Additionally, studies are investigating alternative methods for its reuse, such as the production of lactic acid and even its conversion into green hydrogen. This reuse not only benefits the environment, but also helps the economy and sustainability of the Brazilian sugar and ethanol sector. This work aims to present the production processes and the efficiency of vinasse reuse in the industry, through a bibliographic review on the ethanol production process from sugarcane in Brazil, focusing on the investigation of vinasse reuse, evaluating its environmental and economic impacts.ptEtanolVinhaçaFertirrigaçãoHidrogênio verdeCana-de-açúcarTrabalho de Conclusão de CursoENGENHARIAS::ENGENHARIA QUIMICA