Anaerobic Digestion
Anaerobic Digestion Costs: How Much Does a Digester Cost?
Anaerobic digestion costs depend on the plant’s capacity, feedstock, location and equipment. The price of a digester tank is only one part of the installed project cost. To estimate a project properly, calculate both the initial investment and the annual cost of operating it, then compare these with realistic income and savings. Published examples can […]
Biogas Information UK: Reliable Anaerobic Digestion Resources, Data and Guidance
Where should you go for reliable biogas information in 2026? This newly expanded guide brings together trusted UK sources for anaerobic digestion, regulation, plant data and technical guidance, while also answering the most-searched questions about how biogas is produced, its uses, examples and advantages.
High Solids Anaerobic Digestion: Processes, Feedstocks, Benefits and Limitations
High solids anaerobic digestion (HSAD) is the biological digestion of organic materials at substantially higher total-solids concentrations than conventional wet anaerobic digestion. It is particularly relevant to feedstocks such as source-separated organic waste, the organic fraction of municipal solid waste (OFMSW), crop residues, manures and other materials that would otherwise require large quantities of dilution […]
Anaerobic Digestion Technology: Digester Types, Processes and Modern AD Systems
Anaerobic digestion technology is far more than a digester tank. This guide compares CSTR, plug-flow, high-solids, two-stage, UASB and other AD systems, plus modern process control, biogas upgrading and digestate technology.
Anaerobic Digestion Plant Design: A Practical Guide to Digester Sizing, Layout and Engineering
Successful anaerobic digestion plant design begins with the feedstock, not with a digester tank selected from a catalogue. The quantity, composition and variability of the material entering the plant determine the digestion process, reactor volume, feeding system, mixing duty, heating demand, biogas production, digestate output and much of the civil engineering. An AD plant must […]
Biogas Companies Europe: Turnkey AD Plant Contractors and Manufacturers
This updated list of biogas companies in Europe focuses on businesses that can design, supply, construct or commission a complete anaerobic digestion plant. It includes established EPC contractors, turnkey biogas plant manufacturers and specialist system providers serving agricultural, food-waste, municipal-organic-waste and industrial projects. The expression complete biogas plant manufacturer can be confusing. It does not […]
Anaerobic Co-Digestion: Feedstock Combinations and Why They Work
Anaerobic co-digestion is the simultaneous digestion of two or more different biodegradable feedstocks in the same anaerobic digester. Typical combinations include food waste with manure or slurry, food waste with sewage sludge, and agricultural residues with animal manures. The idea sounds simple: mix organic materials together and produce biogas. But successful co-digestion is much more […]
Anaerobic Digestion Model No. 1 (ADM1): Simulation, Digital Twins and Modern AD Modelling
The Anaerobic Digestion Model No. 1, usually known as ADM1, remains the best-known structured mathematical model of the anaerobic digestion process. First published by an International Water Association (IWA) task group in 2002, ADM1 was developed to provide researchers and engineers with a common mathematical framework for describing the biological and physicochemical processes occurring inside […]
Methane Facts and Why It’s a Greenhouse Gas Much Worse than Carbon Dioxide
Climate Clarity: What You Need to Know About Methane and Global Warming Methane is the second-largest driver of global warming after CO2, responsible for roughly 30% of the temperature rise since the Industrial Revolution. Molecule for molecule, methane traps heat 86 times more powerfully than carbon dioxide over a 20-year period — making every emission […]
Small-Scale Anaerobic Digestion for Farms, Businesses and Communities
Small-scale anaerobic digestion can provide a practical way for farms, food businesses, institutions and communities to treat organic residues while producing biogas and digestate. But reducing the size of an anaerobic digestion plant does not automatically make the technology simple or inexpensive. A small digester still needs a reliable feedstock, biological process control, pumps and […]
Anaerobic Digestion Heat Exchangers: Types, Uses, Fouling and Heat Recovery
Anaerobic digestion heat exchangers perform one of the less glamorous but most important jobs on a biogas plant: moving heat from where it is available to where the process actually needs it. They can heat incoming feedstock, maintain digester temperature, recover heat from hot digestate, transfer heat from CHP engines, provide energy for pasteurisation and, […]
Anaerobic Digestion and Climate Change – Making Biogas to Reduce Greenhouse Gases
Anaerobic digestion can make a substantial contribution to UK climate-change mitigation, particularly when it processes unavoidable food waste, animal manures, slurries and sewage sludge. Its climate benefit comes from more than producing renewable energy. A well-designed anaerobic digestion plant can capture methane that might otherwise escape from decomposing organic waste, replace some fossil natural gas […]
