Acetoclastic Methanogenesis: How Methanogens Produce Methane from Acetate
Increase biogas yield with optimized methanogenic pathways: acetoclastic and hydrogenotrophic methanogens boost outputs by 30-95%. Control temperature (35-55°C) and pH (6.8-7.5), enhance performance with bioaugmentation, and transform biogas plants into renewable energy powerhouses with targeted methanogen strategies. Discover how to harness these synergies effectively…
AD Certification Scheme: ADCS UK Requirements, Audits and International Expansion
The AD Certification Scheme provides an independent assessment of the safety, environmental and operational performance of anaerobic digestion plants. For operators, ADCS certification offers more than a badge for the company website. The audit can expose weaknesses in management systems, staff competence, maintenance, process monitoring, environmental controls and day-to-day operating practices before those weaknesses contribute […]
Digestate Fertilizer: What It Is and How to Use It in Agriculture
Digestate fertilizer is one of the two principal outputs from an anaerobic digestion plant. Biogas receives most of the attention because it produces renewable energy, but the material remaining after digestion contains valuable nitrogen, phosphate, potash, sulphur and organic matter. Used correctly, digestate can replace part of a farm’s purchased fertilizer requirement and return nutrients […]
Biomethane in Australia Starts on Demand for RNG & Low Carbon Transport Fuel
Biomethane in Australia has moved beyond the starting line. When this article was first published, the country’s first full-scale biomethane injection project was under construction at Malabar in Sydney. That plant is now operating, Australia has introduced renewable gas certification, and several larger projects are progressing in New South Wales and South Australia. Australia is […]
I Wrote an 65 Page UK Anaerobic Digestion Market Report. In 6 Months Only 1 Sold.
I have a small confession to make. Earlier this summer, I spent the best part of three working days researching and writing a new UK Anaerobic Digestion Market Report 2026. It runs to 65 pages. It is the first full UK AD market report I have produced since 2017, and the industry I found when […]
Food vs Fuel and Anaerobic Digestion: Do Energy Crops Compete With Food?
Food vs Fuel and Anaerobic Digestion: Do Energy Crops Compete With Food? The food vs fuel debate asks a deceptively simple question: should productive agricultural land be used to grow crops for people and livestock, or should some of that land be used to produce renewable energy? For anaerobic digestion, the answer is sometimes presented […]
Anaerobic Digester Mixing Systems: Lowest Cost, Reliability and Better Performance
Anaerobic digester mixing systems are easy to underestimate. A mixer may represent only one part of an anaerobic digestion plant, but poor mixing can affect effective digester volume, energy consumption, maintenance costs, biological performance and ultimately the reliability of the whole biogas process. This becomes particularly important when digesters process agricultural feedstocks such as cattle […]
Renewable Heat Incentive (RHI): What It Was, Why It Closed and Lessons for Biogas CHP
The Renewable Heat Incentive (RHI) was a UK government support scheme designed to encourage the production and use of renewable heat. For the anaerobic digestion and biogas sector, it became particularly important because it could support the use of biogas for heat and, under qualifying arrangements, the useful heat recovered from combined heat and power […]
Is Biogas Sustainable? Benefits, Limitations and Its Role in Renewable Energy
Biogas can be one of the most useful forms of renewable energy because it does something that wind turbines and solar panels cannot do: it can produce renewable energy while treating organic wastes that society must deal with anyway. Food waste, manure, sewage sludge, agricultural residues and other biodegradable materials naturally decompose. When that decomposition […]
Plan the Digestate Outlet Before You Accept the Feedstock: A Message to All Biogas Plant Operators
We say “Plan the Digestate Outlet Before You Accept the Feedstock”, because an anaerobic digestion plant can have a reliable digester, attractive feedstock contracts and a convincing gas-production forecast but still encounter serious operational problems if nobody has properly planned what happens to its digestate. Digestate is not a minor residue that can be considered […]
Does Every Biogas Plant Need H₂S Removal? Biogas Desulfurization Explained
Biogas systems face corrosion threats from hydrogen sulfide (H₂S), drastically cutting equipment life. With removal efficiencies over 99%, methods like iron oxide media, chemical scrubbing, and biological techniques combat this issue. Choosing the right system depends on multiple factors, ensuring sustained efficiency while minimizing costs…
Anaerobic Digestion Project Success: The Digester Is Only One Link in the Failure Chain
A well-designed anaerobic digester is essential, but it doesn’t guarantee a successful anaerobic digestion plant, and many great AD projects have sadly failed to achieve Anaerobic Digestion Project Success. Every AD plant relies on a connected chain of feedstock supply, reception, pre-treatment, pumping, biological treatment, gas handling, energy export, digestate management and operational control. If […]
