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Anaerobic Digestion Systems Web Site

We also have a section on Anaerobic Digestion in Agriculture.

“We think that Anaerobic Digestion has a great future amongst the biological technologies which will become the tools for sustainable waste management throughout the 21st Century, working with nature to maintain the natural carbon cycle to the benefit of man.”



Our mission on this web site is first and foremost to provide our visitors with the information they seek, assuming that these will range from those without previous knowledge, to informed student researchers, and also will include knowledgeable professionals seeking detailed technical information.

This is a very wide readership to serve. We hope that we cover this breadth of knowledge, and that by visiting a few pages you will find the general or detailed information you were seeking. If you would like to see additional features contact us, by email, or by feedback by clicking at the top right of this page.

Those new to AD might wish to start by reading our Introduction to Anaerobic Digestion section.

Existing suppliers might wish to see our technology provider table here.

We also, in particular, seek to help in the resolution of real-life feasibility questions, for new site specific applications of this technology. This may be as part of your sustainable waste management planning. Or maybe, on your farm. We have published an eBook on the subject of Anaerobic Digestion Plant Feasibility Studies here which is available for immediate downloading.

Watch othis video showing a US Batch AD Process, and get a feel for the concept of modern AD technology development.

The popularity of AD is set to rise again in 2008, with UK Government and EU support.

Why not email us and tell us about your AD Project at info@anaerobic-digestion.com , and if we think that the information is of interest to our subscribers we will post your news to them, and your item will also appear on our AD blog. With the rising number of our subscribers this is becoming very useful publicity.

Build Your Own Anaerobic Digestion Plant in Your Back Yard

In our video below we review a great new ebook. Now you can build one! Use the gas for cooking! Save money on gas.

We are fast becoming a recognised independent web community resource in AD. Please contribute and help us to make this web site better.

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then you will see how others have voted.

Definition of AD:

Free Classic Book: Click here.

Anaerobic Digestion (AD) is a process whereby organic waste is broken down in a controlled, oxygen free environment by bacteria naturally occurring in the waste material. Methane rich biogas is produced thus facilitating renewable energy generation. As a result, materials that are currently going to landfill can be utilised; natural methane emissions are reduced and conventional generation with its associated carbon emissions is displaced. The residual nutrient rich liquor and digestate is suitable for use as fertiliser on the farmland surrounding such a plant, reducing the need for artificial fertiliser.

Anaerobic Digestion is a form of composting. Generally, the term composting is used to refer to aerobic composting. Find out more about composting at our associated commercial composting web site.

(Anaerobic Digestors are also called bioreactors, or biomethanation plants.)

Methane to Markets

Want to know more about the US’s recent Methane to Markets initiative? More ...
 

Anaerobic Digestion News Updated : Biomethane Best EU practices from the Karamel Newsletter Biomethane: which are best practices in Europe?From the collection of relevant feedstocks to end-uses of biomethane, what can be learnt from the main European experiences? Pierre Hirtzberger, project coordinator of BIOGASMAX, will provide responses at the European Conference on Biomethane Fuel, 7th-9th of September in Göteborg. Come and join this major event on biomethane fuel! learn more ...Germany: new legal tools on grid injectionThe European Institute for Energy Research (EIFER), based in Karlsruhe, has entered in the « Biogasmax Circle of Friends ». EIFER presented, 16th of June, to BIOGASMAX partners the legal framework regarding the grid injection of biomethane in Germany. Amongst the 4000 biogas plants running today in Germany, 2... Author : Steve Last Evidence of a Market Will Become End of "Waste" - EA Says The Environment Agency (England and Wales) has now published a briefing note which makes it clear that it had changed its previous position that recovered material under the Quality Protocols scheme only ceases to be waste once it's been dispatched to the customer. It has decided that there shouldn't be any distinction made between processed material awaiting despatch and processed material which has already been despatched. Vincent Brown, Head of Semple Fraser's expert legal team (website www.semplefraser.co.uk) has confirmed, as reported in the CIWM's journal for Waste and Resource Management Professionals published in July, that in law, there never was such a distinction.The end of waste test needs only that you produce a marketable prod... Author : Steve Last Renewable Energy Association UK REA Names Gaynor Hartnell as Chief Executive The Renewable Energy Association is the largest trade body for renewable energy in the UK and represents all renewable energy technologies.  Gaynor Hartnell, who was formerly Director of Policy at the Association, has just been appointed as Chief Executive. Mark Candlish, Chair of the REA’s board of directors said;REA Press release2010/02/23 16:00:37.374 GMT“I am delighted to announce the appointment of Gaynor Hartnell as the Association’s new Chief Executive.  Gaynor has been key to the success of the Association since it was founded in 2001, and in the last 10 months has proved herself the natural successor to Philip Wolfe in her interim role as Policy Director.  Not only does Gaynor have an excellent grasp of renewab... Author : Steve Last Make Digestate from Source Segregated Biowastes Using PAS110 and it isn't a Waste Material The new PAS110 protocol is good news for those Anaerobic Digestion Plant operators that utilize a solely green waste (eg source segregated garden waste) feed source because UK regulators have been confirming this month that within a set of specific criteria they will not apply formal waste regulatory controls to these digestates.The suitable waste input list includes: Source segregated biowastesBiodegradable non-waste materialsAllows for packaged biowaste.(See Nina Sweet link below)This is great news. It means that it is then much easier to use this material as for example a fertilizer, and spread it on land. When any material is designated as a waste, it is not only the additional burden of the regulatory measures themselves which are esse... Author : Steve Last Major UK Water Company’s Invests in Anaerobic Digestion of Sewage Sludge The following article is based on an extract of Wet News (November 2008) the original article is about work done by May Gurney to refurbish and improve the current Severn Trent Coalport, Newport and Monkmoor, anaerobic digesters which digest sewage sludge:AS NEW energy and environmental directives come into action, the UK sewage treatment industry is increasingly under the spotlights. Many examples of renewable energy projects by the gigantic water firms and their framework partners are reported to be on their way which will be almost guaranteed to draw much interest from politicians, rivals and the public. Combined heat and power (CHP) is at the forefront in the UK Water Industry, manufacturing heat and electricity from a single input sour... Author : Steve Last Clickbank Data Feeds Make Money Online

 

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You can also sign up to our general Waste & Resource Management (Waster’s) Newsletter, here:

We have recently added:

• The biogas calculator
• Biomass Energy Sources
• Chloride Level Anaerobic Digestion
• MSW Biogas Plants in China
• Digester Tank Supplier List
• Anaerobic Technology Provider List
• Anaerobic Lagoons
• Advantages and disadvantages of anaerobic treatment
• Bio-gas Yields table for agricultural feedstocks such as slurries and manures
• Biogas Finance Articles Section

Visit Friends of Biogas

WebMaster, Steve Last reports: “Until about 2004 Anaerobic Digestion was considered by most in the UK to be little more than an interesting sideline to sewage treatment and of only academic interest to the waste & agricultural industries. “ “This changing rapidly during 2006/6 and we now receive many enquiries, and have several active projects in this area. We expect that many more will follow.” Want to find out about AD Technology Suppliers? Try our MSW AD PLant suppliers page here.

WHAT THE NEWSPAPERS SAY!!!!: “Sheep and cows bred to be less "windy" could have a crucial part in fighting global warming, according to Sir John Houghton, a climate change expert. Flatulent livestock reportedly contribute up to 30% warming”. WHAT OUR VISITORS ARE SAYING: Brett Spiller: This layout of the website is intuitive and therefore easy to navigate. I have found both the depth and breadth of information available very useful. D.K: It is a very informative site, gave brief information of the technology, particularly plug flow system/UASB, I forsee, that agri farm can be exporters of energy beside their produce, two in one, more cash flow, while keeping the environment protected. India. Damian D: Excellent website for information on biogas process and outline descriptions. Many thanks. Damian, Ireland. RV: Good site for general information, good and easy to use layout! Beds, UK OC: I am in need of block diagram-- how bioreactors are used in bio-methanation?" please help me. India. Try this here... TB: Why don't you have anything on the anoxic gas flotation process? AGF? US (Washington State University) - Sorry. No knowledge of this. Give us a link, and we’ll publish -Ed. KT: Great site, well done, however you are not looking at small scale co-operated systems like the Portagester which is an interesting little plant. However, as I have already said, lots of good info for anyone looking at Anaerobic Digestion to perform a number of services. I have also studied AD as an alternative decentralised sewage system and it is very interesting.  Unknown location. Good point! See the Portagester process page added Sept. 2007. J. O’M: Great Site - Very useful information for novice and professional: Ireland David D: A good site for an interesting subject. Some of the links could be made easier. Regards. United Kingdom Martino V: A very interesting and useful site. Italy 'Witchaya K: I’m come from Thailand and finding the information about anaerobic digestion in the rural village. I'm studying in master degree and making the project about the anaerobic digestion. Thank you. Thailand Renee K-B: I am new to this topic in particular but found the site address encouraging and have signed up for the newsletter. US Nick L: Great website so much useful information, am very much interested in AD with the possible applications and implications. United Kingdom KSVN: The site appears to be interesting. I am yet to browse thro the site. India A.G: Biogas production from any viable source is an obvious path in a petro energy stressed economy. My field of interest is on-site wastewater treatment, given GHG concerns carbon sequestering and energy production potential is subject to scrutiny right now. Comment: Relevent, well presented and thus good. US The above is just a sample of the many comments received.