SUSTAINABLE PRODUCTION OF GREEN HYDROGEN, BIOMETHANE, AND BIOGENIC CO2 FROM BIOGAS.

• Grant number: 24/20305-5
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: February 01, 2025
• End date: January 31, 2026
• Field of knowledge: Agronomical Sciences - Food Science and Technology - Food Engineering
• Principal Investigator: Tânia Forster Carneiro
• Grantee: Gabriela Emi Jodai Sakuraba
• Host Institution: Faculdade de Engenharia de Alimentos (FEA). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

The production, capture, purification, and storage of biogas for the production of green hydrogen (bio_H2), biomethane (bio_CH4), and biogenic carbon dioxide (CO2) are directly related to sustainability and greenhouse gas emission reduction, as they utilize organic waste. Biogas obtained from Anaerobic Digestion (AD) can be purified (Upgrading) to produce bio_H2, bio_CH4, biogenic CO2, and to remove contaminants such as hydrogen sulfide. The purified gases can be converted into other products, such as industrial CO2 for beverage carbonation, refrigeration, atmosphere control in food packaging, as well as biofuels, electric energy, thermal energy, and natural gas. There are also environmental benefits due to the proper disposal of waste, contributing to climate change mitigation. The main objective will be to study the capture and purification of biogas from AD, derived from food industry biomass, for the production of purified gases: bio_H2, bio_CH4, and biogenic CO2. The biogas purification system (H2:CH4:CO2) will be studied through various processes, including chemical absorption, adsorbents, separation membranes, and washing with water or aqueous solutions. The expected results will allow verification of waste valorization by reducing disposal needs and pollution, lowering greenhouse gas emissions, recirculating materials, generating renewable energy through biomethane to promote energy sustainability, improving efficiency through the use of advanced purification technologies, and fostering local economic development.