Maximising biogas production from organic waste: how is it done

Biogas production through anaerobic digestion is a promising renewable energy solution that not only reduces organic waste but also generates valuable energy.

Maximising biogas production from organic waste: how is it done

It is an eco-friendly and sustainable process that harnesses the power of microorganisms to break down organic matter and produce biogas. In this blog, we will explore effective tips and techniques to maximise biogas production from organic waste, promoting a greener future and energy self-sufficiency.

1. Efficient feedstock selection

Selecting the right feedstock is crucial for optimising biogas production. At Severn Trent Green Power we use various food waste sources as feedstock at the majority of our facilities. The ideal feedstock should have a balanced carbon-to-nitrogen (C/N) ratio, as well as a good mix of easily digestible and more complex organic compounds. Properly blending different feedstocks can enhance the overall digestion process and biogas yield.

2. Temperature and pH control

Maintaining optimal temperature and pH levels is crucial for the growth and activity of anaerobic microorganisms. Most anaerobic digestion processes operate in mesophilic (around 35-40°C) or thermophilic (around 50-60°C) conditions. Ensuring a stable and suitable environment for the microorganisms enhances their performance, leading to increased biogas production.

3. Anaerobic digestion system design

The design and configuration of the anaerobic digestion system play a significant role in biogas production. Different types of digesters exist, though Severn Trent Green Power uses covered lagoon digesters, which have the advantage of being relatively passive to manage and low maintenance. Factors such as their size, waste retention time, and loading are essential when maximising gas output.

4. Regular maintenance and monitoring

Consistent maintenance and monitoring of the anaerobic digestion system are critical for its smooth operation and optimal performance. Regular inspections, cleaning, and maintenance of equipment can prevent potential issues and downtime. Our teams constantly monitor their systems at each AD facility and communicate regularly with feedstock coordinators to ensure the right waste is being supplied. Additionally, monitoring gas production, feedstock quality, and process parameters allow operators to identify any issues and take corrective measures promptly.


Maximising biogas production from organic waste is a vital step towards a more sustainable and greener future. By adopting efficient feedstock selection, implementing pre-treatment techniques, and controlling temperature and pH levels, we can enhance the performance of anaerobic digestion systems. Thoughtful system design, combined with regular maintenance and monitoring, ensures consistent and increased biogas yields. As we harness the potential of biogas for energy generation, we not only divert organic waste from landfills but also contribute to reducing greenhouse gas emissions. Embracing these tips and techniques empowers us to make a positive impact on the environment while paving the way for a more energy-independent and sustainable world.

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