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Roadgas explains benefits of biogas

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Over recent months, the escalating national debate and publication of alarming scientific research has shown that the air quality of many of our cities is now at dangerous levels. An increasing number of public sector organisations and private companies are decarbonising their operations to tackle this challenge, and as a result, biogas is looking set to play a major role in the transport sector over the next few decades. But what is biogas and how sustainable is it? And, why are so many fleet operators opting for this fuel type today?

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Roadgas, a leading supplier of natural gas and biomethane refuelling station infrastructure in the UK & Ireland sheds some light.

Produced by a process called anaerobic digestion, biogas – a mixture of both methane and carbon dioxide – is harnessed by the anaerobic fermentation of organic materials from various forms of waste, including domestic and industrial food waste, slurry and crop feed. This waste can be repurposed into a renewable fuel suitable for transport, heating and electricity generation.

Unlike other fuels such as diesel that produce materials which include sulphur dioxide and particulate matter upon combustion, biogas only produces carbon dioxide, water and energy. This makes it a simpler and cleaner alternative for the transport sector whilst at the same time delivering a reduced carbon footprint.

It’s been found that fleet operators who switch to biogas find a reduction in CO2 output of around 85-95%, and recent detailed testing of diesel versus biofuels conducted by IVECO has shown that NOx emissions can be cut by around half. In addition, particulate mass emissions can be nearly eradicated.

However, the benefits of biogas use extend far beyond the environmental win-wins. Aside from assisting transport operators to decarbonise in the face of increasingly unpredictable global temperatures, biogas also appears to be the smart solution to the problem of mounting waste.

Every year in the UK over 90 million tonnes of food waste (along with farm waste and sewage) finds its way to the landfill, and biogas is one of the valuable outcomes of tackling this ever-increasing problem.

According to Dr Thom Koller, Senior Policy Manager of the Anaerobic Digestion and Biogas Association, “By linking up and closing the loop on the previously linear processes of sending organic waste to landfill, anaerobic digestion is now able to tackle waste, provide energy, deliver sustainable food production and provide nutrient recycling challenges in a sustainable and circular manner. The production of biogas and its subsequent use in a number of industries is one measure of its success.”

Not only can biogas play a significant role in the shift towards sustainability and decarbonisation but it also makes a significant contribution to the move in reducing noise pollution. Quieter fleet operations – particularly for heavy goods vehicles (HGVs) in urban and suburban areas that make deliveries at night – are essential for efficient logistics operations. Fuel savings are notable too. With costs that are typically a 1/3 less – and in some instances, as much as a 1/4 less – operators can see that biogas makes commercial sense.

However, whilst a safe, clean and economical solution that is rapidly gaining notoriety in the road transport industry, questions have been raised regarding the sustainability and availability of its ongoing supply.

David Rix, Managing Director at Roadgas feels these fears are unsubstantiated. “Biogas comes from 100% renewable and sustainable sources, and whether CNG or LNG, concerns regarding availability should be quashed. At present, there is a highly organised biogas supply market with a structured supply chain. What’s more, with the growing demand for this type of fuel, the major gas suppliers are unlikely to disregard the growing needs of their customers.

“As it stands today, sourcing compressed biomethane is relatively simple and with the rise in demand for liquid biomethane for LNG-powered vehicles, I envision increasing levels of supply for LNG coming into the market very soon. Furthermore, with the growth of the anaerobic digestion industry as a solution for our waste problems here in the UK, the potential to produce biogas is unlimited.”

For more information about Roadgas Limited and for an insight into how its team works with fleet operators both within the public and private sectors to transition fleets toward cleaner operations, please visit: www.roadgas.co.uk, email David Rix at: davidrix@roadgas.co.uk or call 0115 822 5530 to speak to a member of the team.

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