We have said many times that the anaerobic digestion process makes green biogas, but where is the proof of that?
We say that not only is it green in the sense of it being an environmentally friendly form of energy and fertilizer production, but it also has many other “green” environmental benefits.
That green biogas is, genuinely green in the sense of it being sustainable can be shown by it being funded by “green” investment organisations. Back in December 2012 when we first posted this article we based our case in the “Utility Week” article which announced that Anaerobic digestion and energy efficiency had won the first Green Investment Bank funds.
Green gas is a promising renewable energy form produced from organic material (biomass). The development of its generative processes along with its integration in energy systems will, no doubt, be vital for decarbonising the UK and reaching net-zero emissions. via selectra.co.uk
It was significant that the UK's new Green Bank had so quickly been able to invest in the AD industry, and the article is still copied below for you to read.
Read to the end of this post and you will find out why President George Washington is shocked on our on one dollar bill.
(Dollar Graphic is Copyright “Purple Slog”)
Of course, our regular blog and newsletter readers will not need to be told that biogas and the energy and other by-products of the anaerobic digestion process are green, but hopefully they will take some cheer from the very high profile this first Green Bank award gives to AD Plants.
If anyone in the UK needed any further convincing that anaerobic digestion was not fully supported by the UK government, at least in principle, then surely this must be go a long way to changing that opinion.
It is Green Biogas and it's Official!
So, read on and visit the news articles below for an in-depth understanding of this Green Bank funding:
Anaerobic digestion and energy efficiency win first Green Investment Bank funds
“28 November 2012. Anaerobic digestion and energy efficiency win first Green Investment Bank funds. An anaerobic digestion (AD) plant and an energy efficiency retrofit were the first projects to win funds as the Green Investment Bank (GIB) launched today.”
Here is another green biogas article link to articles on this same subject:
Anaerobic digestion plant is Green Investment Bank's first
“An anaerobic digestion plant in the North East of England is the first project to receive investment from the newly opened UK Green Investment Bank.”
[Via www.linkedin.com Anaerobic Digestion Plant group]
Still on the green biogas theme but this time without the Green Investment Bank connection, we suggest the following item may interest our readers:
Transforming waste into green energy
“Anaerobic waste water digestion technologies respond not only to industry's need to clean up the waste water it discharges to the environment, but also to the need for industry to break free from the cost and pollution of fossil fuels – and the …” via www.pacetoday.com.au
“Any factory with a biological waste stream or wastewater with high COD (Chemical Oxygen Demand) can use this technology to generate energy. Some companies making the investment have achieved payback within a year.”
(Note: Video is unrelated to payback period quoted above.)
Payback within a year. That's amazing isn't it! Demonstrate that to investors and there won't be any need for a Green Investment Bank.
In fact, “green” gets a whole new meaning in that case, and it's nothing to do with the environment. No, the “green” of biogas which we shall see becomes the green of the note (dollar or “greenback”!).
That's what we were alluding to when we created today's graphic!
Green Gas Explained – In Depth
Biogas – or biomethane – is produced when organic matter such as leftover food and agricultural waste is processed in an anaerobic digester (AD).
AD tanks let the waste break down in an environment that's free from oxygen. This allows methane gas to be produced, which is then extracted from the AD and injected into the gas grid.
Once it's in the grid, biogas can be used in the same way as natural gas: it's burnt to heat our homes and cook our food.
What makes biogas carbon neutral?
Burning biomethane does release carbon dioxide. But, because it releases the same amount of carbon dioxide that the organic matter used to produce it absorbed while it grew, it doesn't break the carbon balance.
But when we extract and burn natural gas, we're reintroducing carbon dioxide that has been locked away for millions of years, from a time when the earth's atmosphere was different. This adds more carbon dioxide to our current atmosphere, breaks the carbon balance and contributes to global warming and climate change.
What's more, the material left over at the end of the AD process can be used as a natural, nutrient-rich fertiliser. Which will help grow plants and food that lead to the waste used to generate biogas – and the cycle goes on. via www.goodenergy.co.uk
What is Green Gas?
Green gas (or biomethane) is made from biodegradable materials which can then be used in the same way as energy from fossil fuels – to heat your home or cook with.
The biggest difference between green gas and traditional fossil fuel gas, is that biomethane is renewable and virtually carbon neutral, so it doesn’t contribute towards climate change.
How is green gas made?
Green gas is made by turning organic matter (like plants or vegetables) into biomethane, through a process called anaerobic digestion.
Harvest the fuel source. Green gas can be made from a number of biodegradable materials – in our case, we will use grass to create green gas.
Anaerobic digestion (AD) creates green gas, along with a natural fertiliser – which can be used to improve soil quality, in place of harmful synthetic fertilisers.
How CO2 is removed from green gas
The green gas is ‘scrubbed’, which means the CO2 is removed and the biomethane is then pumped directly into the National Gas Grid, Greening up the National Grid.
The renewable gas gets mixed with gas from fossil fuels, to reduce the overall carbon impact of the gas in the Grid.
How Much of the UK Nation's Gas Could be Supplied?
In theory, we could produce 97% of domestic gas demand from grass by 2035.
There’s huge potential for green gas to make a big contribution in reducing carbon emissions and building a more energy independent Britain. via www.ecotricity.co.uk