Anaerobic Digestion
How to Cut Carbon Emissions: 10 Practical Actions and Where Biomethane Fits
Ten practical ways to cut carbon emissions, from energy efficiency and food-waste prevention to methane capture. Explore the distinctive contribution of biogas and biomethane, with the original 2020 ADBA proposals preserved in context.
Anaerobic Digestion vs Landfill – Which is the Best?
For separately collected, suitable biodegradable waste, well-managed anaerobic digestion generally offers advantages over landfill: it captures biogas for useful energy and allows nutrients to be recovered through appropriate digestate use. Landfill gas extraction can also recover landfill gas (predominantly methane), but landfill disposes of material out of sight, rather than providing the same controlled treatment […]
Can Digestate Increase Soil Organic Carbon? Evidence from Long-Term Field Studies
Anaerobic digestion can contribute to soil-carbon management by producing materials that return organic matter to farmland. Long-term research provides encouraging evidence, including results for compost produced after a biogas-production stage. However, the material applied, application rate and soil conditions all affect the outcome. When this post first appeared in 2018, it considered the potential contribution […]
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 in the UK: Regulation, Biomethane, Food Waste and Future Development
In the UK, since 2011, there have been two main policies, pushing forward anaerobic digestion UK implementation.
Anaerobic Digestion UK policy to collect and digest food waste, and to raise renewable energy production to achieve a target output.
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 […]
