Biogas Production Systems and Upgrading Technologies: A Review

Area of Science:

• Biotechnology
• Environmental Science
• Renewable Energy Engineering

Background:

• Growing reliance on fossil fuels and increasing organic waste streams necessitate sustainable energy solutions.
• Biogas technology presents a promising approach to mitigate greenhouse gas emissions and manage waste effectively.
• Sustainable waste management is a global priority for reducing pollution and environmental impact.

Purpose of the Study:

• To review conventional and novel biogas production systems.
• To explore purification and upgrading technologies for biogas, focusing on CO2 and H2S removal.
• To provide an overview of feedstock, production parameters, digestate utilization, and molecular biology applications in biogas enhancement.

Main Methods:

• Literature review of existing biogas production systems and technologies.
• Analysis of purification and upgrading methods, particularly for carbon dioxide (CO2) and hydrogen sulfide (H2S) removal.
• Examination of feedstock characteristics, process parameters, digestate management, and molecular biology's role.

Main Results:

• Biogas technology effectively converts organic waste into renewable energy.
• Various purification techniques exist for removing CO2 and H2S, improving biogas quality.
• Optimizing feedstock and process parameters, alongside digestate utilization, enhances biogas yield and sustainability.

Conclusions:

• Biogas production is a viable strategy for sustainable energy and waste management.
• Advanced purification and molecular biology applications can significantly improve biogas efficiency.
• Integrated approaches to feedstock, process, and digestate management are key for maximizing biogas potential.