Circlia Nordic

Circlia Nordic

Circlia Nordic ApS

Aarhus V, Denmark

BiomassPrivate company
Founded 2014
Profile last updated: October 8, 2026

About

Founded in 2014, Circlia Nordic is a private company headquartered in Aarhus V, Denmark specializing in Biomass.

Circlia Nordic is a privately held Danish company developing and commercialising hydrothermal liquefaction (HTL) technology. The process converts wet biomass, including wastewater sludge, food waste and agricultural side streams, into biocrude that can be refined into aviation fuel, diesel or marine fuel, or used for electricity and district heating. The company designs modular plants, licenses its intellectual property related to pumping, viscosity reduction and heat exchange in HTL plants, and offers plant design from pilot to full scale. It was founded in 2014 as Bio2Oil ApS.

Headquarters

Aarhus V, Denmark

Founded

2014

Company type

Private company

Focus areas

hydrothermal liquefactionHTLbiocrudesludge to fuelsustainable aviation fuelwaste to energycircular economybiomass

Products & services

Business models

B2B

Value chain

R&DDevelopmentEngineering

Locations

Headquarters

Bautavej 1A, 8210, Aarhus V, Denmark

Projects

3

InnoBooster

HTL heat exchanger

Development of an innovative heat exchanger concept for the company's HTL plant, covering test units, heat transfer validation, large-scale production optimisation and integration.

CIRCULAIR

HTL aviation fuel production

EU-funded research project on producing aviation fuels from agricultural residues using hydrothermal liquefaction, with ten partners across six European countries and a budget of 5 million euros over four years.

Client: Horizon Europe

Sludge2Fuel

HTL sludge-to-fuel plant

EUDP-funded project validating the first full-scale direct conversion of wet wastewater sludge into sustainable fuel using HTL.

Credentials & affiliations

Partnerships

Krüger Veolia, Crossbridge Energy, Fredericia Spildevand & Energi, Aarhus University

People

Management & team (9)

+ 5 more

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