INTEGRATED PRODUCTION OF BIOETHANOL AND CELLULOSIC DERIVATIVES FROM MICROALGAE

• Grant number: 25/01330-1
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: April 01, 2025
• End date: March 31, 2026
• Field of knowledge: Engineering - Chemical Engineering
• Principal Investigator: Andreia de Araújo Morandim
• Grantee: Julia Murta de Moraes
• Host Institution: Centro Universitário FEI (UNIFEI). Campus de São Bernardo do Campo. São Bernardo do Campo , SP, Brazil

Abstract

The search for alternative sources of biomass for the production of biofuels has intensified in recent years, especially in the context of bioethanol production, one of the leading renewable fuels used in Brazil and worldwide. In this scenario, this project proposes developing an integrated and optimized process for producing bioethanol and biopolymers from the biomass of the microalgae Chlorella vulgaris, exploring its potential as a sustainable and high-yield raw material. Therefore, aiming to contribute to the work that has been developed, this project will initially conduct studies to optimize the cultivation and processing conditions of the microalgae, aiming at their full use for the generation of high-added value products such as biofuels and biopolymers. Next, the optimization of the hydrolysis stage will be carried out, comparing two processes: enzymatic, using the Cellic® CTec complex, and chemical, with sulfuric acid, to maximize the release of fermentable sugars, essential for the production of bioethanol. Variables such as reagent concentration and treatment time will be adjusted to increase the efficiency of the hydrolysis process. The fermentation conditions will be optimized in the next stage, with the ideal fermentation time. In parallel, the project will investigate the feasibility of producing biodegradable biopolymers that represent a sustainable alternative to conventional plastics. The hydrolysis residue will produce carboxymethyl cellulose (CMC) and cellulose acetate, expanding the portfolio of bioproducts generated. In this way, it is expected to demonstrate the technical and economic feasibility of the proposed process, consolidating its application in the concept of sustainable biorefineries. These results will contribute to replacing fossil fuels and synthetic polymers, promoting the reduction of greenhouse gas emissions, and boosting the circular economy, which aligns with global sustainable development goals.