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

 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

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:

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