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Renewable energy company launches spin out to boost biofuel production

A Lincolnshire food waste recycling operator has launched a spin out company to boost production of sustainable oil-based fuels.

BioteCH4 uses anaerobic digestion (AD) to recycle food waste into green energy and biofertiliser, a nutrient-rich organic material used to fertilise farmland. As the leading AD operator in the UK, in 2022 BioteCH4 recycled 555,000 tonnes of organic waste across their six sites, into 280,000 MWh of energy – enough to power 78,000 UK homes for a year.

To enhance the process even further, BioteCH4 have launched Bisviridi, a new company focused on technological advances within anaerobic digestion, which has developed and patented a process to turn oil and fats waste into biofuel.

The product is called Bio Crude and is a sustainable alternative to oil-based fuels, with a potential for it to be further refined into sustainable aviation fuel (SAF).

Lee Dobinson, Chief Commercial Officer of Bisviridi, said: “Not all fats, oils and greases are consumed by the AD process but can still be used for good. The need for large biodiesel companies to find new sources of sustainable waste-oil streams has led us to develop a way of harnessing this waste material and diversify the output of the BioteCH4 business, increasing revenues and their sustainability.

“It’s particularly exciting that the product can be further refined into aviation fuel and could help the aviation industry meet the mandate for 10% SAF by 2030.”

Bisviridi has partnered with Alfa Laval, a world leader in heat transfer, centrifugal separation, and fluid handling, who have provided the technology (the Prodec Oil Plus decanter­) to turn the fats, oils and greases into the sustainable fuel.

Bisviridi, is borne from BioteCH4 extensive expertise in AD, the sustainable process of recycling food and organic waste into methane-rich biogas and has been working on the patented process for the past three years. The idea that using the waste oils, fats, and grease and turning into fuel, led to Bisviridi’s name – bis viridi means ‘twice green’ in Latin.

The Bisviridi process can be incorporated into any AD facility or wastewater facility using the Alfa Laval Prodec Oil Plus decanter. The oil is siphoned off from the organic waste going through the AD process prior to the methanogenesis stage. Once the oils, fats and grease content has been removed from the feedstock, the remaining solid and liquid content is seamlessly recombined, and continues back into the AD system with minimal impact on biogas production. The bio crude that has been separated can have a purity up to 99.5% and can then be sent to refineries to contribute to biofuel production and the SAF market. Using the Bisviridi process together with the Alfa Laval Prodec Oil Plus decanter, BioteCH4 produces up to, but not limited to 300 litres of oil per hour. This can be turned on and off with no interruption to the existing AD system at the operator’s discretion.

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Renewable energy company launches spin out to boost biofuel production. Image credit Alfa Laval.

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What is AD? – AD is the sustainable process of recycling food waste into methane-rich biogas and biofertilizer. Food waste enters a building where it is processed into a liquid porridge, and then pumped into the anaerobic digestion plant. It is here that bacteria feed on the food waste, breaking it down to produce biogas. Biogas is captured and used as a fuel in Combined Heat and Power (CHP) units to produce renewable electricity and heat or cleaned and sent directly to the gas grid. The waste is pasteurised to ensure that any pathogens are destroyed and the biofertiliser (digestate) is stored in large lagoons ready to be applied on farmland when the crops require it. There are more than 100 AD plants around the UK. About Bisviridi – With decades of combined experience in the waste and anaerobic digestion industry, Bisviridi are perfectly placed to look at new opportunities for growth. Anaerobic digestion already turns waste into a source of renewable energy – but what if we could maximise this existing process? Due to the growing need for alternatives to oil-based fuels that can be produced cost-effectively and at scale, we’ve spent the last three years perfecting an anaerobic digestion oil extraction system that costs a fraction of what existing oil separation plants do. Not all fats, oils and greases are consumed by the digestion process. Our patented technology recovers this material with little to no reduction in biogas potential. This allows AD plant owners to diversify their output, and as a result, their income, by creating the opportunity to extract biodiesel from their feedstock and transform it into a valuable commodity. Contact: Email: [email protected]. Website: This is Alfa Laval – Alfa Laval is a world leader in heat transfer, centrifugal separation and fluid handling and is active in the areas of Energy, Marine, and Food & Water, offering its expertise, products, and service to a wide range of industries in some 100 countries. The company is committed to optimizing processes, creating responsible growth, and driving progress to support customers in achieving their business goals and sustainability targets. Together, we are pioneering positive impact. Alfa Laval has 20,300 employees. Annual sales in 2022 were SEK 52.1 billion (approx. EUR 4.9 billion). The company is listed on Nasdaq Stockholm. To learn more about the new Prodec Oil Plus, please visit:

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