Monday, December 18, 2017

IADAB News - Edition 13: UK Biogas Industry to Push Politicians - 2nd City in Colorado Goes for Sewage Biogas and So Do 2 Distillers

Date: 16 December 2017: This is Issue 13 of the IADAB News Weekly, where we summarise the news of the week in the fast developing Anaerobic Digestion and Biogas Industry.


Once again, it has been busy a week for biogas news. ADBA's Chief Executive has been talking about pushing UK politicians to implement sensible energy policies. 

At the same time she has been describing the UK future for anaerobic digestion. 

Therefore, we have included this as our first excerpt. Her presentation follows-on from what Lord Deben has been saying to the UK AD industry, which included the message that the industry should be telling the UK government what future emissions reductions policies it recommends.

Next. we move to the US for our excerpt, where Longmont, the second largest city in Colorado, is going to convert sewage byproduct (sewage sludge) into fuel. We note that this is yet another US city increasing bio-energy production. Not only will the biogas plant be expected to pay for itself quite soon, but the state authorities are also determined to reduce CO2 emissions.

In our third extract we tell our readers about a new microdigester which its manufacturers say will open new opportunities for small-volume organic waste biogas production. We welcome this new player into the microdigester market. For too long the potential of small biogas plants has been neglected in the western economies.

Finally, we have news of two new work-starts on Scottish anaerobic digestion systems, these being at Balmenach whisky distillery, and at the Caorunn Gin Distillery. The Balmenach biogas project will integrate with it’s existing wood-pellet biomass boiler, and when completed, will provide enough steam and electricity for 100% of the distillery’s energy needs.

Alright, let’s get started… (Scroll down for each extract and use the links to the full articles on each of the individual websites.)

The following is our intro video. Watch the intro video below, for a taster of what you will read if you scroll down below the video:


1 - ADBA Chief Executive talks about pushing UK politicians to implement sensible energy policies and the UK future for anaerobic digestion

With the dearth of subsidies and volatile political environment, Charlotte Morton shared her views on what lay ahead for the UK’s anaerobic digestion (AD) industry.


AIDAB Biogas News Weekly Issue 13
Charlotte Morton
Of the ten million tonnes of food waste a year in the UK, six million is ‘avoidable waste’. With the government goal of being zero avoidable waste by 2050, Charlotte Morton still sees a place for anaerobic digestion (AD) in a future, minimum-waste society. We will never be waste-free, so AD will be relevant and increasingly so for places that can supply and benefit from AD facilities, like farms.

However, the present political environment has not favoured AD and with Brexit obstructing any other policy considerations and making the UK less attractive to investors, the industry has to be thinking about viability without such a supportive framework from the government.

“You’re talking about subsidies for an industry that produces green energy and green fertiliser. In the last Autumn Statement, billions were promised to the fossil oil and gas industry. Why are we still subsidising industries that are damaging our environment—damaging our climate—but we’re not wanting to subsidise green as if it’s a bad thing? If we had a proper carbon price we would not need a subsidy and oil and gas would.”
 “If a reasonable amount of investment went into R&D for the AD sector we could absolutely transform the viability of the sector and we’d have no need for subsidies, even in the absence of a carbon price.”

An ADBA spokesperson said that in collaboration with UK universities they estimated that an investment of £50 million over 5-7 years in a centre to develop AD technology would be enough to deliver on a promise of exporting equipment and expertise worth £5bn per year. They also said that the advances made would allow AD to become independent of subsidies.

A shift in mentality is needed according to Morton. She hopes that the government will be forward facing rather than doing whatever is politically expedient, by investing in industries over the long-term with long-term expectations and sustainability.

In a November meeting with the Prime Minister’s Special Adviser on the Environment, Sir John Randall at 10 Downing Street, she emphasised the need for renewed RHI regulations and the need for the investment detailed above. Mandatory separate food waste collection by local authorities in England was also on the agenda. via ADBA Chief talks | Bioenergy Insight Magazine

2 - Longmont second city in Colorado to convert sewage byproduct into fuel

A methane flare at the Longmont Wastewater Treatment Plant, where installation of a biogas cleaning system will facilitate turning the methane into usable natural gas. 

Anaerobic digestion at Longmont Colorado
Biogas production will replace flaring
(Adam Butt / Courtesy photo)
Come 2019, Longmont's trash trucks will be powered by an entirely different kind of waste.

When wastewater (anything that gets flushed down a toilet or washed down a drain) comes into the Longmont Wastewater Treatment Plant, organic material is broken down by microorganisms in a process called anaerobic digestion.

The byproduct of anaerobic digestion is methane gas, 25 percent of which goes back into heating the anaerobic digestion process but the other 75 percent is simply set on fire.
"It's the natural gas you get out of your home — methane. But there are a lot of contaminants in that gas so we are forced to flare it," 
said John Gage, Longmont civil engineer. "If you were to burn it in an engine, it would cause all sorts of problems. So it's a resource that, right now, is not being utilized."

Instead, Longmont will install a biogas cleaning system that will turn the methane into usable natural gas by compressing it to 3,200 pounds per square inch.

Once the system construction is completed in 2019, the city will use the biogas to fuel 11 of Longmont's 16 diesel trash trucks. The 11 trucks will be replaced on the existing replacement schedule. The remaining five trucks will be replaced in 2021.

Longmont received a $1 million grant from the Colorado Department of Local Affairs to offset a portion of the costs required for the cleaning system and a $385,000 grant from the Colorado Regional Air Quality Council to offset costs of the more expensive trucks that run on biogas.

Running the 11 trash trucks on biogas rather than diesel will mean Longmont won't use 60,000 gallons of fossil fuels per year, according to a city news release.

Gage said that the stable and cheaper cost of biogas compared to diesel fuel will save the city money in the long run.

"When you look at gas prices right now at the pump, we are seeing $2 to $2.50 per gallon, something like that ... Diesel fuel can get as high as $3 or $4 per gallon," Gage said. "It costs us to treat biogas the equivalent of $1 per gallon. And we can maintain that for the foreseeable future."

Longmont would gain additional revenue by selling Renewable Identification Numbers credits to fuel refiners to meet Environmental Protection Agency obligations to reduce the use of fossil fuels. Longmont would generate RIN credits as they produce gallons of biogas.

Gage said the plan to install the biogas cleaning system lines up with Longmont's sustainability plan by offsetting the use of fossil fuels and beneficially using methane that is currently just being flared.

Gage said there have been discussions with city officials about offering biogas to other entities or to the public in the future.

"What we've estimated is that once converted, sanitation will use 50 to 70 percent of the fuel and we'll still have 50 to 30 percent available," 
Gage said.
"We have already been talking about a possible expansion to do a public fuelling station or reaching out to other government or other interested parties that would be able to use our fuel."
Longmont is the second city in Colorado to use methane from sewage treatment to fuel government vehicles . Grand Junction implemented its system in 2011.

3 - Microdigester Opens New Opportunities for Small-Volume Organic Waste

Ontario, Canada,-based biogas project developer CCI BioEnergy has produced large-scale anaerobic digesters for years, but now it has tweaked a design that can process 300 tons a day and shrunk it to a system the size of a shipping container. The idea is for companies with much lower volumes of organic waste to be able tap into anaerobic digestion.

The Microdigester - CCI BioEnergy

CCI, which has developed larger systems mainly for municipalities, is introducing their microdigester to food manufacturers, distributors, farms, a university and office buildings.
“Instead of tossing organics [throwing organic waste into tye general waste] or having to pay to have it collected, generators put it in the mouth of this mini digestion unit that will break it down and produce biogas,” 
says Kevin Matthews president of CCI BioEnergy.
“We have the ability to make systems to produce gas for electricity, combined heat and power, or pipeline grade natural gas for transportation fuel.”
The microdigester can process between one and five tons of organic material a day.

This is brand new technology to North America, says Matthews who is about to launch a system for Ontario Water Centre in spring of 2018.

CCI Bioenergy is currently trying to close on two other projects, one at a goat cheese manufacturer to process cheese whey, and one for a university in Toronto to deal with food concessions.
“I had wondered for years why more people weren’t doing anaerobic digestion,” 
says Colin Dobell, executive director of Ontario Water Centre. “Part of the issue was the cost. It was only affordable to larger operators. For others it was cheaper to landfill. … We happened to be a suitable site. We are a nonprofit focused on environmental education, primarily of school-aged children.”
The gas coming out of the centre’s digester goes to a gas upgrading unit and from that unit, it can go in two directions: it can either go through a pipe into to a boiler to heat the green house, or through a pipe to fuel vehicles.
“We are doing this to at least break even,” 
Dobell says.
 “But we also want to demonstrate to the public what’s available in the way of clean, renewable energy technology and how it works.”
The microdigester technology comes out of England and is called QUBE Renewable, a modular system to process smaller volumes of feedstocks and wastes to accommodate the generator’s volume, which can be scaled up.

The system can process multiple organic waste streams including food wastes, manure, and human waste.

Having focused on larger systems, CCI put much time into figuring out how to economically scale down the technology, while ensuring its reliability.

The plan moving forward is to develop systems for different industry sectors, engaging in pilot and demonstration projects with host entities such as, university, dairy, and supermarket chains.

“We are having conversations with many company types who are trying to get comfortable with how to enter into these new projects,” 
says Matthews.
“We go into this with the objective of trying to show their industries this is a good, reliable solution.  They are seriously considering this as an option that may address the issue of, what do we do with our waste that will allow us to turn it into an asset?”
Energy Vision, a national non-profit that researches low-carbon energy technologies, recently awarded CCI for its work, with its president, Matthew Tomich, stating microdigestion technology could potentially revolutionise organics waste management.
“In the past, if you were a relatively small waste generator, you had to rely on a hauler and a centralised commercial-scale compost or AD facility,” 
Tomich says.
“With systems like the one CCI has, that’s no longer the case. In areas with high waste disposal costs and/or high energy costs, this type of on-site solution may prove economically advantageous. We see great potential for on-site micro AD.”
via Microdigester for Small Waste Generators

4 - Work starts of anaerobic digestion system at Balmenach whisky distillery

Inver House Distillers has started work on a new anaerobic digestion system at its Balmenach distillery in Speyside, Scotland.

The £3m biogas project will integrate with Balmenach’s existing wood-pellet biomass boiler and when completed will provide enough steam and electricity for all the distillery’s energy needs.

It is expected to be operational in the summer of 2018.

Engineering company Synergie Environ is project manager, while Clearfleau will design and build the new biogas system.

Synergie Environ managing director Uisdean Fraser said:
“We believe the project will deliver a malt whisky distillery, which is powered entirely from renewable energy sources with the on-site combination of biomass for the primary heat source and electricity from the CHP powered by biogas from the anaerobic digestion plant.”
Clearfleau chief executive Craig Chapman said: “Based on recent projects, Clearfleau is now developing a more modular plant design, for more remote sites and export projects.” via Bio blend whisky

5 - Caorunn Gin Distillery Gets £3m Biogas Investment

Work has already begun on a £3 million biogas project to significantly reduce the Speyside distillery’s carbon footprint, with Inver House Distillers commissioning a new anaerobic digestion system, which breaks down the co-products of whisky production ... via Caorunn £3m biogas investment

We hope you found this week's anaerobic digestion news informative.

This will be our last edition of the year, and we won't be back with our next edition until 2018. We would like to take this opportunity to wish all our readers the season's greetings.

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Anaerobic Digestion Central to Goverment Policy Goals UK Climate Change Committee Chair Confirms

Lord Deben at ADBA National Conference 2017.


Lord Deben in his keynote address to the ADBA Annual Conference on 7 December 2017, said that increased production of more renewable energy from the anaerobic digestion process would be central to policy. More Climate Change/ Carbon Emissions reduction goals would be needed for the UK to comply with its existing commitments. UK policy would be further developed, and he expected this would be set-out in more detail during 2018.

Lord Deben is the influential Chair of the Committee on Climate Change and a former Environment Secretary, so these words, coming at the start of the ADA annual conference, were very welcome.

The UK AD industry has been very subdued throughout 2017, part due to a lack of implementation of a promised subsidy restoration as part of the UK Renewable Heat Incentive (RHI). The other reason for inactivity has been simply not knowing the details in the small-print of the new restored RHI when it is eventually implemented.

Therefore, this was at least some news which brought the hope of increased UK anaerobic digestion plant starts during the latter half of 2018.

However, for the industry to gain the confidence to start again to invest in biogas plants at the higher rates seen over the 3 years to 2017, will depend upon the UK government ending its all-consuming pre-occupation with Brexit negotiations. 

Lord Deben pointed out that throughout MPs and Whitehall, almost all were engaged in Brexit work of some sort. He said that this was leading to the exclusion of other much-needed decision-making.

ADBA Press Release:

Lord Deben Said “AD’s story needs to be told much more widely”

Former Environment Secretary and current Committee on Climate Change Chair Lord Deben has described anaerobic digestion (AD) as ‘central to government policies’ at the Anaerobic Digestion & Bioresources Association (ADBA) National Conference 2017 in Westminster.

Lord Deben, a renowned environmentalist who gained prominence among green groups by introducing the 1995 Environment Act and Landfill Tax when Secretary of State for the Environment in the 1990s, gave the keynote presentation at the conference, which brings together AD industry stakeholders with politicians, policymakers, and academics to discuss key issues affecting the AD industry.

AD recycles organic wastes and processes purpose-grown energy crops into renewable heat and power, clean transport fuel, and digestate biofertiliser, which can help to restore nutrients and organic matter to soils.

Lord Deben said:
“We’ve had a long period in which AD has not been given the advantages it should have been given […] AD is not just a mechanism for providing energy but also makes an important contribution to the health of our soils”.
He added: 
“AD’s story needs to be told much more widely […] AD and bioresources are a very important contributor in the fight to rid ourselves of climate change, improve our soils, and eliminate large amounts of waste”.
In a recent foreword for the ADBA’s quarterly member magazine, Lord Deben also described AD as ‘an essential weapon in the war against climate change’ and ‘an increasingly efficient way of completing the system by taking what cannot be reused or directly recycled and giving it real value’. The CCC has previously described injection of biomethane into the gas grid as a ‘low-regret opportunity’.

The ADBA National Conference 2017 also featured the launch of ADBA’s AD Certification Scheme, as well as panel sessions on the role of AD in farming, transport, and renewable heat and on different food waste collection systems.

In another keynote session, Professor Ian Boyd, Chief Scientific Adviser at Defra, welcomed ADBA’s AD Certification Scheme and highlighted AD’s ability to recycle valuable nutrients including nitrogen, potassium, and phosphorous.

Saturday, December 09, 2017

IADAB News - Edition 12: New Global AD Bioenergy Report - Encouraging Signs from UK Government - AD Certification Scheme and Hydroponically Grown Tomatoes

Date: 8 December 2017: This is Issue 12 of the IADAB News Weekly, where we summarise the news of the week in the fast-developing Anaerobic Digestion and Biogas Industry.


It has been busy a week for news, partly due to the ADBA Annual Conference having taken place in London during the week. We have selected the following to summarise and create excerpts, to help our readers quickly access the AD and biogas/information they seek:

A new Global AD Bioenergy Report which has a lot of information in it of use to biogas newcomers, and potential biogas plant developers. The work was supported in parts by funding from the USDA NIFA Hatch project, and research support provided by state and
federal funds appropriated to The Ohio State University

Next, we report on the encouraging signs for Biogas because Anaerobic digestion is central to UK Government policy, says Lord Deben. 

Then there is the launch of the AD Certification Scheme, and finally we have news of research into using digestate to fertilise Hydroponically Grown Tomatoes which suggests yet another use for AD facility digestate.


Alright, let’s get started… (Scroll down for each extract and links to individual websites.)


The following excerpt (1) leads to a detailed report pdf which has just been published and is available for free download. Despite the awful length of the title, this document would be a good starting point for anyone seeking to obtain a broad understanding with the current global status of anaerobic digestion and biogas production worldwide. 

Not only that, but the report also provides sources for AD plant operating prices, which would be worthwhile for anyone seeking to understand comparative costs for different types of AD plant and feeding these plants with different organic materials.

1 - Anaerobic digestion for bioenergy production: Global status, environmental and techno-economic implications, and government policies

This review explores the current status of the AD technology worldwide and some of the environmental, economic and policy-related drivers that have shaped the implementation of this technology. 

The findings show that the regulations and incentives have been the primary factor influencing the steady growth of this technology, in both developing and developed countries.via Anaerobic Digestion Global status

2 - UK’s anaerobic digestion industry sees encouraging signs from the government

The UK’s Anaerobic Digestion and Bioresources Association (ADBA) has welcomed the British government’s new Industrial Strategy White Paper, saying that anaerobic digestion (AD) can play a key role in ‘enhancing’ Britain’s industrial capacity.

Key features of the White Paper are agri-tech and the circular economy. Anaerobic digestion plays an important role in both sectors by supporting sustainable agriculture and organic resource recovery, ADBA argues.

Concerning the circular economy, the White Paper says: 
“A linear ‘take, make, dispose’ economy risks eroding the natural capital central to its long-term growth through resource depletion and environmental pollution. 
[The government is] committed to moving towards a more circular economy – to raising productivity by using resources more efficiently, to increasing resilience by contributing to a healthier environment, and to supporting long-term growth by regenerating our natural capital.”

The government has therefore pledged to create a new Bioeconomy Strategy to establish a framework for growth in the sector.
“The move to cleaner economic growth – through low carbon technologies and the efficient use of resources” is described in the White Paper as one of four ‘Grand Challenges’ for the future.
“In terms of sustainable agriculture, AD is vital to transforming food production so that we can ‘produce more from less’ whilst reducing emissions, pollution, waste, and soil erosion across the UK. Not only does AD offer a treatment option for organic agricultural wastes, it also produces renewable energy and transport fuel, reduces farm emissions, and helps restore soils through the production of nutrient-rich biofertiliser”,
said Charlotte Morton, ADBA CEO.


Source: AD & Bioresources Assoc.
“We’re encouraged to hear that the government will increase incentives for investment in sustainable agriculture to help grow markets for innovative technologies and techniques. 
AD is clearly one such technology, so we look forward to further details on this support.”

Morton continued: 
“The government is also right to highlight the benefits of moving towards a more circular economy in which resources are used more efficiently, and a dedicated Bioeconomy Strategy is an important step forward in this regard. As the only recycling option for organic wastes, AD can reduce emissions from waste and turn these wastes into the resources that the UK economy desperately needs."
“The government now needs to follow up on this promising White Paper with concrete support for the AD sector so it can deliver its huge potential across the UK.”
via Encouraging signs from UK government

3 - Biogas - Anaerobic digestion is central to UK Government policy says, Lord Deben 

Lord Deben
Lord Deben is a renowned environmentalist who gained prominence among green groups by introducing the 1995 Environment Act and Landfill Tax when Secretary of State for the Environment in the 1990s. At the ADBA National Conference 2017, he gave the keynote presentation. The conference brings together AD industry stakeholders with politicians, policymakers, and academics to discuss key issues affecting the AD industry.

“We’ve had a long period in which AD has not been given the advantages it should have been given” said Lord Deben. “AD is not just a mechanism for providing energy but also makes an important contribution to the health of our soils. 

AD’s story needs to be told much more widely. AD and bioresources are a very important contributor in the fight to rid ourselves of climate change, improve our soils, and eliminate large amounts of waste”.
AD recycles organic wastes and processes purpose-grown energy crops into renewable heat and power, clean transport fuel, and digestate biofertiliser, which can help to restore nutrients and organic matter to soils.

In a recent foreword for the ADBA’s quarterly member magazine, Lord Deben also described AD as ‘an essential weapon in the war against climate change’ and ‘an increasingly efficient way of completing the system by taking what cannot be reused or directly recycled and giving it real value’. 

The CCC has previously described injection of biomethane into the gas grid as a ‘low-regret opportunity’.

The ADBA National Conference 2017 also featured the launch of ADBA’s AD Certification Scheme, as well as panel sessions on the role of AD in farming, transport, and renewable heat and on different food waste collection systems.

In another keynote session, Professor Ian Boyd, Chief Scientific Adviser at Defra, welcomed ADBA’s AD Certification Scheme and highlighted AD’s ability to recycle valuable nutrients including nitrogen, potassium, and phosphorous.

For additional information: Refer to the ADBA National Conference 2017... via AD is Central to UK

4 - Anaerobic digestion certification scheme launched

Charlotte Morton, ADBA chief executive said: “ADBA’s new certification scheme defines good practice and enables AD plants to be recognised as meeting it. A certification process is essential to ensuring that regulators, insurers and investors have confidence in the scheme, which offers AD operators a range of financial and regulatory benefits.”

AD certification scheme

The voluntary, industry-led, scheme includes detailed assessment criteria that will allow third-party certification bodies to verify the achievement of good practice at AD plants. It was developed with industry stakeholders, with ADBA calling it the “most comprehensive of its type”.

Marie Fallon, director of regulated industry at the Environment Agency, said: “The agency welcomes the scheme as a positive intervention by the industry to improve performance in the AD sector. We share the determination in reducing pollution incidents which is a risk to the reputation of the industry. We will continue to work with ADBA to share evidence and information to achieving that goal.”

Rick Brunt, head of vulnerable workers, agriculture, waste and recycling unit at the Health & Safety Executive, added: 
“Seeing ADBA’s scheme progress to the next stage is an excellent example of the industry working together, driving improvement of its own standards and expectations.
”I hope that we will see the remainder of the AD industry embracing the scheme with the same level of enthusiasm as those that have worked on its development.” 

5 - Anaerobic Digester Effluent as Fertiliser for Hydroponically Grown Tomatoes

Research Paper Authors: Jacquelyn Neal and Dr. Ann C. Wilkie, of the College of Agriculture and Life Sciences, University of Florida

Anaerobic digestion of tomato culls produces renewable energy (biogas) and a nutrient-rich effluent. Using the effluent from an anaerobic digester to grow tomato plants could offset the cost of synthetic fertiliser. 

Effluent from an anaerobic digester fed organic waste was analysed for major plant nutrients and used as a nutrient medium to grow tomatoes hydroponically. Tomatoes grown using anaerobic digester effluent had a lower performance than those grown with traditional fertiliser. The predominance of nitrogen in the ammonium form, to which tomatoes are sensitive, explains the observed difference in growth. Means of improving the performance of tomatoes grown in the effluent are discussed.

Perspective

As the world population approaches nine billion, food producers will be faced with increasing food production without an increase in field space and with decreasing soil quality. In order to provide enough food for a growing population, synthetic fertilisers are used to provide essential nutrients for maximising crop yields. Nitrogen is one of the key limiting nutrients for plant growth, which is commonly applied as a synthetic fertiliser. Atmospheric nitrogen is unusable for most plants. 

Nitrogen-fixing bacteria maintain a symbiotic relationship with certain legumes and lightning strikes can produce ammonia from atmospheric nitrogen, but the primary man-made process for producing ammonia is the Haber-Bosch process (Smil 2001). This industrial process requires a high input of energy, which presently comes from fossil fuels. 

An alternative fertiliser, such as biofertiliser made from the effluent of an anaerobic digester, could potentially reduce the need for synthetic nitrogenous fertilisers and reduce the energy used in the production process. Biofertiliser would also create a complete system within the anaerobic digestion cycle, which would create a use for the effluent in the anaerobic digestion process. via Anaerobic Digester Effluent as Fertilizer for Hydroponically Grown Tomatoes


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Tuesday, November 07, 2017

Global Benefits of Biogas Technology - World Biogas Association's 1st Year

Image of WBA President talking about the Global Benefits of Biogas Technology
 WBA President David Newman
The new UK based voice which promotes the global benefits of Biogas Technology, The World Biogas Association (WBA), is celebrating its first birthday at the COP23 climate change conference later this week.

The press release below explains the very active first year of this new organisation. It's efforts are very much to be applauded, and if possible are even more important than when the organisation was formed a year ago.

In our humble opinion writing for this blog, the raised importance of the work of the WBA is due to at least two factors:
  • the faltering support for the 2015 Paris Accord climate change from the Trump administration, plus
  • the recent news of alarming rises in carbon dioxide levels in the global atmosphere recently.
We hope that you will scroll on down this age and read more, because it has never been more urgent to explain to the world the potential benefits of anaerobic digestion and biogas technology.

Global biogas association celebrates first year of achievements

PRESS RELEASE -  6 November 2017:

WBA President David Newman will be speaking at the global climate-change summit in Bonn on Thursday:

The World Biogas Association (WBA) is today celebrating its first year of achievements at the UN COP23 Climate Change Conference in Bonn as global leaders come together to review progress on reducing greenhouse gas emissions.

Watch the video below for an on-screen presentation of the work of the first year of the world Biogas Association:


The WBA was founded a year ago at COP22 in Marrakech with the aim of demonstrating the huge contribution that biogas can make to reducing emissions and supporting policymakers to create an environment that will encourage the development of biogas globally. Biogas, produced through reprocessing organic wastes and purpose-grown energy crops in anaerobic digestion plants, can be used to produce renewable heat and power, clean transport fuel, and nutrient-rich biofertiliser, and has the potential to reduce global greenhouse gas emissions by up to 20%.

In its first year, the WBA has published: a report on the contribution of biogas to meeting the UN Sustainable Development Goals (SDGs); three factsheets on how biogas can improve urban air quality, mitigate climate change, and help meet the UN SDGs; and five reports on biogas markets in the US, Netherlands, Italy, Australia, and Poland respectively. The WBA is now working closely with the C40 Cities Climate Leadership Group on a report into increasing the uptake of separate food waste collections around the world and helping cities understand how biogas technologies can help them resolve issues around food waste.

WBA President David Newman is speaking at an event at COP23 this Thursday (9th November) titled ‘Solving the nexus between waste, energy and agriculture – biogas technologies as a global solution’, which will examine how biogas can help to meet international climate goals and the UN SDGs.

Celebrating WBA’s achievements from its first year, Mr Newman said:

“It’s incredible to think that a whole year has already passed since we established the WBA at COP22 in Marrakech to be the voice for biogas around the world. We already have over 50 members from five different continents, and we’re growing all the time as those working in biogas across the planet look to the WBA to represent them at the highest political levels.
“I’m delighted to be speaking here at COP23 to share the many benefits of biogas with politicians, policymakers, industry, and academics from all over the world. This crucial summit is the perfect precursor to our report with C40 on how cities can use biogas to resolve issues around food waste collection and treatment.
“Biogas has enormous potential to provide solutions for waste management, renewable energy, sustainable farming, and food security in every country of the world, and the WBA is looking forward to celebrating even more achievements in our second year as we spread this message to policymakers and politicians far and wide.”

Photo of WBA President David Newman attached for use.

WBA website: www.worldbiogasassociation.org

Or, for WBA publications click here.

For further information about the World Biogas Association Contact

Chris Noyce, PR & Parliamentary Affairs Executive, World Biogas Association

Tel: 020 3176 5441

E-mail: cnoyce@worldbiogasassociation.org

Thursday, November 02, 2017

What is a Biogas Plant? for Home Community and Industry

Biogas is especially exciting because no matter how much biogas we use, we can always grow more, and make more of it, forever.

That's why biogas is amazing, and now we will explain what happens inside a biogas plant.

1 - Organic material arrives at the biogas plant.

The organic material delivered may include animal manure, food waste, agricultural residues, or wastewater solids (sludge).

The organic materials are the "input", or "feed" for the biogas plant.

Each individual biogas plant is tailor made for the feed materials which it will accept.

The accepted materials may be from just one source, or a combination of several types of organic food source.

2 - Organic material is broken down in a "digester"

Digesters can be wet (where the biomass is mixed in water and pumped and mixed as a slurry), or "dry" (where biomass is made wet with added water) but is handled as a solid.

The digester is a big tank, or multiple tanks, for fully mixed wet digestion.

Or, the digester may be a long tube, for plug-flow anaerobic digestion which is also a "wet" A.D. process.

And, sometimes (for a dry digester which operates on biomass solids), the digester reactor vessel is configured like a tunnel.

A tunnel type dry digester may be rounded, with large paddles to move the feedstock through the digester.

Or, a dry digester may have a flat floor for batch-by-batch production, and be wide and tall enough for feedstock loading and unloading vehicles to work in.

The digester is always airtight, and is usually equipped with mixing and heating equipment.

Naturally occurring microorganisms grow in the zero-oxygen environment.

They use the organic matter as their food, and break down (digest) the organic matter.

At wet process A.D. plants the digester is continuously fed with organic materials (the feedstock) and biogas, and the remaining liquid and solids, are also simultaneously discharged.

At dry process A.D. plants some are continuously fed and flow constantly, and some are batch flow type plants with doors that are closed after each filling and are left for a period of time to digest, before being emptied completely.



3 - Raw biogas is produced, and flows out of the digester.

The biogas is mostly methane, but, it also contains carbon dioxide, water vapour, and raw biogas contains small amounts of what are known as, "trace" compounds which are potential pollutants.

Like biogas, "Natural gas" which is made from fossil fuels is also methane, the difference is that natural gas contains none of the impurities we just mentioned, two slides ago.

The most damaging impurities, if not removed from the biogas, are usually hydrogen sulphide, and siloxanes (chemicals which can build-up and obstruct the insides of generators, causing costly wear on components).

Purified biogas can replace "natural gas", but first it must be processed to as far as possible, remove everything but the methane.

The degree of processing which takes place in the anaerobic digestion plant, varies according to the use intended for the upgraded biogas.

Upgraded biogas of the highest quality is called "biomethane" or "renewable natural gas" R.N.G.

4 - After digestion in the Anaerobic Digestion Plant (Biogas Facility), which can take anything from 5 days to 60 days, the biogas is used in one of many ways.

Biogas may be used to: Produce heat, electricity, vehicle fuel.

Or, it may be used for injection in the gas grid (natural gas pipelines), after it has been upgraded to become very valuable "biomethane".

However, the biogas accounts for only a small proportion of the incoming material, and what is left, after digestion is called digestate.

5 - Co-products Made from Digestate in AD Plants

The digester residue which is known as "digestate" contains both solid fibres, and a liquid.

The solid portion and the liquid portion can be used to provide marketable products, such as liquid (or crystallised) fertiliser, compost, soil amendments, or animal bedding and fibre products for the building trade.

These are called "co-products", and like the biogas or biomethane, can be also sold for a profit.

We hope that you now have a clear understanding of what a biogas plant is.

More Information about What is a Biogas Plant for Home Community and Industry:

Biogas - Wikipedia: https://en.wikipedia.org/wiki/Biogas

Biogas typically refers to a mixture of different gases produced by the breakdown of organic ... A biogas plant is the name often given to an anaerobic digester that treats farm .... of electricity, enough to power millions of homes across the United States. .... In 2011 energy crops for biogas production consumed an area of circa ...

[DOC]Characteristics of Danish Community Biogas Plants

inforse.org/europe/word_docs/s_pm_bio.doc

by P Maegaard - ‎Cited by 2 - ‎Related articles

20 community biogas plants, each 540-7500 m3, delivering electricity to the grid ... coming from the food industry, (slaughter houses, dairies, fish processing), ...

Build a Biogas Plant - Community Biogas

www.build-a-biogas-plant.com › Home

The viability of a particular community biogas plant design depends on the particular environment in which it operates. ... By biogasplant Home ...

Build a Biogas Plant - Home

www.build-a-biogas-plant.com/

Information and plans to build biogas plant for home, community, farms and reduce methane emissions.

Various Advantages and Disadvantages of Biogas - Conserve Energy ...

https://www.conserve-energy-future.com/advantages-and-disadvantages-of-biogas.php

The 1980s saw the replacement of the rectangular biogas plant design by the dome ... The raw materials used in the production of biogas are renewable.

Are We Ignoring the Small but Brilliant Innovations That Could Bridge ...

https://www.popsci.com/.../kenya

Biogas - Wikipedia

https://en.wikipedia.org/wiki/Biogas

Biogas typically refers to a mixture of different gases produced by the breakdown of organic ... A biogas plant is a name often given to an anaerobic digester that treats .... of electricity, enough to power millions of homes across the United States. .... such as waste from the food industry are also used for biogas generation.
‎Production · ‎Benefits of manure ... · ‎Applications · ‎Global developments

Biomass - Wikipedia

https://en.wikipedia.org/wiki/Biomass

Biomass is an industry term for getting energy by burning wood, and other organic matter. ... Industrial biomass can be grown from numerous types of plants, including .... and refining operations as well as to supply electricity for nearly 60,000 homes. ..... Analog forestry · Bamboo forestry · Close to nature forestry · Community ...

Various Advantages and Disadvantages of Biogas - Conserve Energy ...

https://www.conserve-energy-future.com/advantages-and-disadvantages-of-biogas.php

The 1980s saw the replacement of the rectangular biogas plant design by ... The biogas program was exported to Nepal, which is today known as Biogas Sector Partnership (BSP). ... By definition, biogas is a kind of biofuel generated through biological ... Biogas plants can be developed right at home using locally sourced ...

Lusakert Biogas Plant - Wikipedia

https://en.wikipedia.org/wiki/Lusakert_Biogas_Plant

Lusakert Biogas Plant (LBP) is a biogas plant in Nor Geghi, about 26

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Tuesday, October 31, 2017

What is a Biogas Plant?

The question of "What is a Biogas Plant?" is becoming a popular question as biogas plants, also known as anaerobic digestion plants, become more common, and people hear about them talked about through various routes.

We set about answering the question by making a video in which we go further to describe what goes in inside a biogas facility, stage by stage.

The video which follows is the result of that exercise in providing information, and the video also explains upgrading biogas to become biomethane, because this is becoming such a common feature of many UK biogas plants:

In case for any reason you are unable to watch the video, we have copied the text from the video below:

What is a Biogas Plant? (Transcript)

Biogas is mostly methane gas, and when methane burns it produces a clean heat source, without harmful by-products. It is also a "renewable" energy, and because it is renewable it is also said to be "green" and eco-friendly.

The best way to understand what a biogas plant is, is to know what happens inside a biogas plant, which we will now explain.

1 - Organic material arrives at the biogas plant.

These are also known as anaerobic digestion facilities. The organic material delivered may include animal manure, food waste, agricultural residues, or wastewater solids (sludge).

The organic materials are the "input", or "feed" for the biogas plant. Each individual biogas plant is tailor-made for the feed materials which it will accept. The accepted materials may be from just one source or a combination of several types of organic food source.

2 - Organic material is broken down in a "digester".

The digester is a big tank or multiple tanks for wet digestion, (where the biomass is mixed in water).

Or, the digester may be a long tube, for plug-flow digestion.

And, sometimes (for a dry digester which operates on biomass solids), the digester reactor vessel is configured like a tunnel.

A tunnel type dry digester may be rounded, with large paddles to move the feedstock through the digester.

Or, the digester may have a flat floor for batch-by-batch production, and be large enough for feedstock loading and unloading vehicles to work in.

The digester is always airtight, and is usually equipped with mixing and heating equipment.
Naturally occurring microorganisms grow in the zero-oxygen environment.

They use the organic matter as their food, and break down (digest) the organic matter.

At most AD plants the digester is continuously fed with organic materials (the feedstock) and biogas, and the remaining liquid and solids, are also simultaneously discharged.

3 - Raw biogas is produced.

The biogas flows out of the digester continually and is made of mostly methane. It also contains carbon dioxide, water vapour, and small amounts of what are known as, "trace" compounds.

"Natural gas" which is made from fossil fuels is methane like biogas, the difference is that natural gas contains none of the impurities we just mentioned, two slides ago.

The most damaging impurities, if not removed from the biogas, are usually hydrogen sulphide, and siloxanes.

Biogas can replace "natural gas", but first it must be processed to as far as possible, remove everything but the methane.

The degree of processing which takes place in the anaerobic digestion plant varies according to the use intended for the upgraded biogas.

Upgraded biogas of the highest quality is called "biomethane" or "renewable natural gas".

4 - After digestion in the Anaerobic Digestion Plant (Biogas Facility), which can take anything from 5 days to 60 days, the biogas is used in one of many ways.

Biogas may be used to: Produce heat, electricity, vehicle fuel. Or, it may be used for injection in the gas grid (natural gas pipelines), after it has been upgraded to become "biomethane".

5 - However, the biogas accounts for only a small proportion of what is left, after digestion. 

The digester residue is known as "digestate" comprising solid fibres and a liquid.

The solids and liquids can be used to provide marketable products, such as fertiliser, compost, soil amendments or animal bedding.

These are called "co-products", and can be sold for a profit.

We hope that you now have a clear understanding of what a biogas plant does.
If you would like to read more, we suggest the following sources.

For the original American Biogas Council article upon which this was based, go to https://anaerobic-digestion.com/abiogasc

For our detailed article, visit our A.D. website at: https://anaerobic-digestion.com/anaerobic-digestion-basics

Videos like this one, are available to order. Get a quote from us now... via: https://anaerobic-digestion.com/advertising


Monday, October 16, 2017

How to Feed a Digester Weltec MultiMix - Better Biogas Yield and Stability

How to Feed a Digester for High Biogas Output - Weltec MULTIMix 

Visit: http://blog.anaerobic-digestion.com/weltec-biopower-extends-ad-plant-france/
How to Feed a Digester for High Biogas Output The Weltec MULTIMix Way.

Avoid problems with inconsistent throughout quality, and avoid downtime when feeding a digester with, grass silage, whole-plant silage, and manure for biogas production.

With the MULTIMix digester feed delivery system, WELTEC BIOPOWER offers a unique solution which removes foreign materials, BEFORE being conveyed to the feed pump.

The system also shreds the substrate to size and consistency which is optimised, for rapid uptake by the biogas bacteria.

The MULTIMix system thus ensures the technical and economic stability of biogas plants, by preventing failures, and thus ensuring an uninterrupted process of digestion of the substrates used.

Advantages of Installing a Weltec MULTIMix:

1, Processes fibrous, sticky and soft substrates (up to a high dry weight percentage).
2, Provides bacteria-oriented substrate shredding for immediate biogas production.
3, Ensures an optimum loading of the digester with a homogeneous, macerated bio-suspension.
4, Minimises the risk of floating and sediment layers.
5, Improves overall anaerobic digestion plant energy efficiency, through the reduction of agitation energy needed, and significantly increases the pump feed pump's typical service life.
which substantially reduces wear and tear.

Two quick MULTIMix tips, for biogas plant operators, follow:

Tip 1, Several digesters can be fed with only one MULTIMix.
Tip 2, A MULTIMix unit can easily be retrofitted to your biogas plant.

Video based on the Weltec MULTIMix web page at www.weltec-biopower.com

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CLICK HERE: http://blog.anaerobic-digestion.com/weltec-biopower-extends-ad-plant-france/

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More Information about Feed Digester:

Feedstocks | Anaerobic Digestion
www.biogas-info.co.uk/about/feedstocks/
The material that is used in anaerobic digestion is called feedstock. What goes into a digester determines what comes out, so careful choice of feedstocks is ...

Digester Feed Products - Vogelsang USA
www.vogelsangusa.com/products/digester-feed-products/?L=1
Biogas technology needs to be secure and efficient at all times to enable cost-effective plant operation. Digester feeding plays a key role here. Wet feeding is the ...

[PDF]“Design & Analysis of an Anaerobic Digester to Feed a Biogas Fuelled ...
research.ncl.ac.uk/pro-tem/components/pdfs/material.../Butcher_Design&analysis.pdf
19 Aug 2010 - “Design & Analysis of an Anaerobic Digester to Feed a. Biogas Fuelled Boiler for a Medium Sized. Industrial Enterprise”. Matthew Butcher.

Biogas - Digester Feed Material
www.biogassa.co.za/index.php/biogassa-blog/112-digester-feed
Anaerobic digestion - Wikipedia
https://en.wikipedia.org/wiki/Anaerobic_digestion
Anaerobic digestion is a collection of processes by which microorganisms break down ..... The residence time in a digester varies with the amount and type of feed material, and with the configuration of the digestion system. In a typical two-stage ...

Silage - Wikipedia
https://en.wikipedia.org/wiki/Silage
Silage is fermented, high-moisture stored fodder which can be fed to cattle, sheep and other such ruminants (cud-chewing animals) or used as a biofuel feedstock for anaerobic digesters. .... The advantages of silage as animal feed are several: During fermentation, the silage bacteria act on the cellulose and carbohydrates in ...

Digestate - Wikipedia
https://en.wikipedia.org/wiki/Digestate
Digestate is the material remaining after the anaerobic digestion of a biodegradable feedstock. Anaerobic digestion produces two main products: digestate and ...

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