Anaerobic Lagoon Process: Covered Lagoons and Biogas Recovery
An anaerobic lagoon treats suitable organic wastewater or slurry without dissolved oxygen. This guide explains how covered lagoons recover biogas, how treatment and storage arrangements differ, and what temperature, maintenance and site conditions mean for performance.
Silage Clamp Design and Construction: UK Rules and Best Practice
A practical 2026 guide to silage clamp design and construction for farms and anaerobic digestion plants. Compare vertical, sloping and flat-pad clamps, with advice on structural loading, concrete durability, effluent drainage, SSAFO regulations, planning and historical construction case studies.
UK ‘Net Zero’ Emissions Nation by 2050: Historical Context – UK Climate Progress as Reported in 2019
What did the biogas industry say when the UK announced its net-zero commitment in 2019? This historical article preserves ADBA’s contemporary response, with updated commentary explaining why the record remains relevant.
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 […]
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 […]
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 […]
Biogas Additives for Anaerobic Digestion: When They Work and Why
Biogas additives can improve anaerobic digester performance, but only when the additive addresses a genuine limitation in the process. Trace elements, enzymes, iron compounds, buffering agents, antifoams and other products all have legitimate applications, but there is no universal additive that will automatically increase methane yield in every digester. No reputable additive supplier will ever […]
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 Practical Guide
A practical guide by Steve Last, CEng, MICE, MCWIM Make better-informed anaerobic digestion decisions—before costly problems become built in Anaerobic Digestion: A Practical Guide to Feedstocks, Biogas, Digestate and Successful AD Plants explains how the biology, equipment, inputs and outputs must work together for a viable AD project. Assess feedstocks, contamination and biological risks more […]
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 […]
About Steve Last – Anaerobic Digestion and Waste Engineering Expert
Chartered waste and environmental engineering consultant, anaerobic digestion writer, and founder of IPPTS Associates. Steve Last is a United Kingdom–based Chartered Waste Manager and environmental engineering consultant with more than 30 years of professional experience in waste management, landfill engineering, anaerobic digestion, and biogas technologies. As the founder and principal of IPPTS Associates, Steve has […]
Palm Oil Anaerobic Digestion in Thailand Mixed by Landia’s GasMix
Palm Oil Anaerobic Digestion is rapidly becoming one of the most important technologies for transforming the environmental impact of the palm oil industry. As global demand for palm oil continues to rise, producers are under increasing pressure to manage waste streams responsibly while improving energy efficiency and sustainability. One of the most effective ways to […]
