The Role of Biogas in the Circular Economy Revolution

O Papel do Biogás na Revolução da Economia Circular

The circular economy has proven to be a silent and promising revolution in the pursuit of a sustainable economic development model. This concept, which aims to reduce, reuse, and recycle materials, is gaining more traction, especially with the incorporation of innovative technologies and the appreciation of waste as valuable resources. Among these technologies, biogas produced from urban solid waste (RSU) and agricultural waste stands out as an effective and sustainable solution.

Globally, the circular economy moved US$ 339 billion in 2022, according to Statista. It is expected to reach nearly US$ 713 billion in the next four years. Projections from the World Economic Forum (WEF) reveal the transformative power of this production and consumption model, with a global economic growth opportunity of US$ 4.5 trillion by 2030.

Biogas from Urban Solid Waste

Urban solid waste, including domestic and commercial trash, presents a major challenge for cities. Inadequate disposal of this waste can cause serious environmental impacts, such as soil and water contamination. However, transforming this waste into biogas offers a promising solution. Through the anaerobic digestion process, organic waste in RSU is converted into biogas, a mixture of methane and carbon dioxide that can be used as a renewable energy source. Eva Energia, a leading company in this sector, has excelled in implementing biogas projects, transforming urban solid waste into an efficient and clean energy source.

The use of biogas from RSU not only reduces the amount of waste sent to landfills but also contributes to reducing greenhouse gas emissions. Additionally, biogas can be used to generate electricity, heat, and even fuel for vehicles, promoting a low-carbon economy and reducing dependence on fossil fuels.

O Papel do Biogás na Revolução da Economia Circular

Agricultural Waste as a Source of Biogas

Agriculture is another area where the circular economy can bring significant benefits, especially through the use of animal waste for biogas production. Manure from cattle, pigs, and poultry, often inadequately discarded, can be converted into a valuable energy source. The anaerobic digestion of this waste not only produces biogas but also results in nutrient-rich digestate, which can be used as organic fertilizer, closing the nutrient cycle in agriculture.

Using agricultural waste for biogas production also helps reduce odors and sanitary problems associated with the inadequate handling of this waste. Furthermore, by promoting renewable energy production directly on farms, the need for transporting fossil fuels is reduced, and the energy self-sufficiency of rural properties is improved.

Benefits of the Circular Economy with Biogas

Incorporating biogas from RSU and agricultural waste into the circular economy model brings a range of environmental, economic, and social benefits. Among the main benefits are:

  • Waste Reduction: Transforming waste into biogas significantly reduces the amount of trash sent to landfills.
  • Climate Change Mitigation: Producing and using biogas helps reduce greenhouse gas emissions, contributing to climate change mitigation.
  • Renewable Energy Generation: Biogas is a renewable energy source that can be used to generate electricity, heat, and fuel, reducing dependence on fossil fuels.
  • Waste Valorization: The circular economy promotes the appreciation of waste as resources, encouraging innovation and the development of new technologies.
  • Rural Development: Biogas production in rural areas improves the energy self-sufficiency of farms and promotes local economic development.


The silent revolution of the circular economy is gaining traction, and biogas from urban solid waste and agricultural waste is a key piece of this process. By transforming waste into valuable resources, the circular economy not only promotes environmental sustainability but also drives economic and social development. Currently, the world is 7.2% circular, according to Circle Economy Foundation estimates.

In other words, true circularity is not limited to adjustments to reduce the negative impacts of the linear economy. As foundation analysts describe, “it represents a systemic change that builds long-term resilience, generates economic and business opportunities, and provides environmental and social benefits.” Investing in biogas production technologies and waste valorization is essential to building a more sustainable and resilient future for all.


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