Anaerobic Digestion
Anaerobic Digestion Courses: Academic, Industry and Expert-Led Online Training
Anaerobic digestion courses now range from free introductory online learning to specialist operator training, professional CPD, university-level study and formal operator certification. That is good news if you want to enter the biogas industry or deepen your existing knowledge. It also creates a problem: an AD plant operator, an engineer, a project developer and somebody […]
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 […]
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 […]
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 […]
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 […]
3 Anaerobic Sludge Digestion Case Studies: Biogas to RNG
These three anaerobic sludge digestion case studies explain how water utility companies are embracing the anaerobic digestion process as their method of choice for the treatment of the vast quantities of solid sludge materials which they aerate and settle out of the sewage entering their sewage works every day. While doing that they produce a […]
Borger’s FlowSep: Cutting the Fines That Damage Biogas Plants
Our sponsor Börger sent us this press release under the headline “‘Fines’ reduced at biogas plants by Börger’s FlowSep” – and yes, before anything else, it’s worth being upfront about the headline itself. It’s a deliberate play on words. In everyday English, “fine” tends to mean a financial penalty, and we suspect more than a […]
Optimizing Anaerobic Digestion: How Chemical Dosing Cabinets Ensure Biological Stability & Process Reliability
The Importance of Best Practice in the Provision of Precise Dosing in Anaerobic Digestion Process Control Maintaining optimal biology inside an anaerobic digester requires precise chemical control. Whether adding alkalis (such as sodium hydroxide or lime) to buffer pH against Volatile Fatty Acid (VFA) accumulation, dosing trace elements (like cobalt, nickel, and iron) to feed […]
Anaerobic Digestion Process Steps: The 4 Stages Explained
Anaerobic digestion takes place through four closely connected biological process steps: hydrolysis, acidogenesis, acetogenesis and methanogenesis. Together, these microbial stages convert complex organic material into biogas—principally methane and carbon dioxide—and digestate. New to the subject? Start with our complete introduction to anaerobic digestion. This article concentrates specifically on the biochemical process steps, the compounds produced at each stage […]
