Utilização da vinhaça no cultivo da microalga Klebsormidium flaccidum (Kützing) Silva visando à produção de Biomassa aplicada ao mercado de biodiesel

• Autor(a) principal: Guarieiro, Mayara dos Santos
• Data de Publicação: 2019
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
• Texto Completo: http://repositorio.ufes.br/handle/10/11115
• topic: Setor sucroalcooleiro; Vinhaça; Microalgas; Biocombustíveis; Biorremediação; Vinass; Microalgae; Biofuels; Bioremediation; Agronomia; 57

The microalgae are able to supply large amounts of biomass rich in biocides of commercial interest and their use in the biofuel market is a promising alternative. However, it’s important to have the cost of the crops, requiring a search for alternatives that aim to make the costs of the process, aiming at large-scale production. The use of industrial waste is a strategy to reduce production costs through a use of available resources. The objective of this work was to reuse food as a source of nutrients for microalgae and flacidium as an alternative for the production of biofuels. For this purpose, the vineyard, the residual water of the sugarcane distillation process, was used. The experiments were carried out in the room of cultivation of the Laboratory of Taxonomy and Ecology of Continental Algae - Federal University of Espírito Santo (UFES). The analysis was carried out to follow the growth and development of the culture grown in three different types of wine (10%, 20% and 30%) diluted in distilled water. In terms of cell density, the results were observed in the treatments with 20% (1.3 x 10 cel.mL-1) and a biomass presented results at 20 and 30% dilution. In relation to the biochemical characterization of the biomass produced, the protein and lipid content decreased as the vinasse concentration increased in the media. Thus, the use of the biomass produced by the crop is not intended to optimize another use that is not a biodiesel production. In contrast, a biomass was rich in carbohydrates, which suggests its application as a potential material for the production of bioethanol. The cultivation of K. flaccidum in vinasse still demonstrates nutrient efficiency, such as ammoniacal nitrogen and orthophosphate, with removal percentages of 97.27% and 40.17% respectively, thus reducing the pollutant load of the vinasse, thus minimizing environmental impacts. Considering the results obtained, the cultivation of K. flaccidum microalgae in vinasse can be an alternative to the sustainable and low cost development for the production of biomass to the market of biofuels linked to the treatment of waste water.