Organic Waste Conversion to Biofuels: A Sustainable Approach
Subject Areas : Biotechnological Journal of Environmental Microbiology
Abdul Razak Mohamed Sikkander
1
*
,
Hala S. Abuelmakarem
2
1 - Department of Chemistry, Velammal Engineering College, Chennai -600066 Tamilnadu INDIA
2 - Department of Biomedical Engineering, College of Engineering, King Faisal University, Al-Ahsa, 31982, Saudi Arabia
Keywords: Organic waste, Biofuels, Biohydrogen, Biomethane, Biopropane, Microbial fermentation, Anaerobic digestion,
Abstract :
This study examines the potential of converting organic waste into valuable biofuels, including biohydrogen, biomethane, and biopropane, through microbial fermentation and anaerobic digestion. Organic residues such as food waste, agricultural byproducts, and sewage sludge serve as renewable feedstocks for these bioprocesses, enabling the transformation of otherwise discarded materials into energy-rich compounds. By harnessing the metabolic capabilities of microorganisms, these processes offer a sustainable approach to waste management while simultaneously generating renewable energy, contributing to both environmental and economic benefits.Biohydrogen, produced through dark or photo-fermentation, represents a clean and high-energy fuel with minimal greenhouse gas emissions. Similarly, biomethane generated via anaerobic digestion can be used as a direct substitute for natural gas, while biopropane offers potential as a renewable alternative for industrial and domestic energy applications. These biofuels not only reduce dependence on fossil fuels but also play a critical role in mitigating climate change by capturing carbon present in organic waste streams and preventing methane release from uncontrolled decomposition.
Recent research has focused on optimizing microbial consortia, refining reactor designs, and improving process parameters such as temperature, pH, and nutrient availability to enhance biofuel yield and process efficiency. Advances in scaling up these technologies have demonstrated their feasibility for industrial applications, supporting the development of integrated biorefineries that convert waste into multiple valuable products.Overall, the microbial conversion of organic waste into biofuels exemplifies a circular economy approach, where waste materials are transformed into sustainable energy resources. By promoting renewable energy generation, reducing greenhouse gas emissions, and improving waste management, these bioprocesses highlight the potential of biotechnology to address pressing environmental challenges while fostering sustainable industrial practices.
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