Circlia Nordic | Turning waste into a carbon neutral oil

most Energy-efficient solution

Research has shown that HTL technology is one of the most energy-efficient solutions for handling wet biomass streams. Circlia Nordic’s proprietary Technology is well suited for multiple applications, such as: wastewater treatment, plastics, manure, and many more.

We offer a unique implementation of our technology and our solution can be increased in capacity if needed. Our technology is ready to handle the decentral nature of biomass.


This does our technology work

The formation of oil takes a significant amount of time with oil beginning to form millions of years ago. 70% of oil deposits existing today were formed 60 millions of years ago.


Essentially our technology, resembles the process that has taken place over millions of years in our planet converting sedimented biomass to crude oil, with the distinct difference that the process takes place in minutes rather than millennia.


We convert wet biomass by using the same conditions as the earth requires. In order to make oil, organic matter, heat and a lot of pressure are required. Our technology is based on Hydrothermal liquefaction (HTL), also refers to as hydrous pyrolysis, is a thermochemical depolymerisation process in an enclosed reactor to convert wet biomass into biocrude oil and chemicals at moderate temperature (typically 300–350°C) and high pressure 220 bar.

Currently Circlia Nordic is collaborating with 3 companies and Aarhus University to test our technology in big-scales operation. You can read more about the project here. 

HTL operates using subcritical water at pressures of 10-25MPa and temperatures between 280-375°C acting as a solvent that facilitates the breakdown of the carbonaceous material into to biocrude components. A range of organic compounds – and in fact the entire biomass – can be used with good conversion efficiency. Furthermore, HTL is well suited to a range of wet feedstocks, including biosolids, which are also known as waste activated sludge.



Unfettered exploitation of the fossil fuels integrated with unimpeded population growth and brisk industrialization are the root causes of the escalating world energy crisis and intensifying global warming by and large. The produced biocrude can be used in traditional flows for crude oil and has the potential to be upgraded to jet-fuel, maritime fuel, diesel, and bunker oil. This way, it paves a new path for the transportation industry towards independence from fossil fuels.



Circlia Nordic | Turning Waste Into A Carbon Neutral Oil

Transform your Waste to Value

The rapid depletion of conventional fossil fuels and day-by-day growth of environmental pollution due to extensive use of fossil fuels has raised concerns over the use of the fossil fuels. With our technology converting waste to alternative fuels is the promising route.

Wastewater Treatment

Municipal Wastewater Treatment facilities handle large continuous flows of water and treat it through a number of processes to allow it to return to nature with as small an impact as possible. This is done by using several steps of treatment, which in the end produces clean water out of sewage sludge, which needs to be disposed of

Organic Waste

HTL is a technology that transforms many types of organic waste and converts them into biocrude.

Sustainable Development Goals


Cllean water and sanitation

Read more


Affordable and clean energy

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Responsible consumption and production

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