Impact of community-driven biogas initiatives on waste vegetable reduction for energy sustainability in developing countries

Abstract

This research investigates the management of waste vegetables in Lagos, Nigeria, aiming to enhance sustainability and reduce environmental impact. This study explores existing waste management practices and assesses their effectiveness through a mixed-method approach combining quantitative data collection on waste volumes and qualitative interviews with stakeholders. Significant findings indicate a steady increase in waste vegetable generation in Lagos, from 120,000 tons in 2016 to 140,000 tons in 2020. Current management practices primarily involve landfilling, with minimal recycling. However, pilot projects on composting and biogas production show promising results in reducing landfill use and providing renewable energy. For instance, composting initiatives have successfully decreased landfill usage from 100% in 2019 to 60% in 2024, and community participation in waste management programs has grown from 10% to 85% over the same period. The study concludes that while Lagos faces significant waste management challenges, sustainable practices like composting and biogas production can effectively address these issues. The research underscores the need for policy support and increased community engagement to expand these initiatives, suggesting a potential model for other developing cities with similar challenges.