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Hydrothermal liquefaction

Hydrothermal liquefaction (HTL) of sewage sludge takes place generally at temperatures of 250–400 °C and pressures above 40 bar. The primary end product formed from the generated condensable gases is a highly viscous liquid (a bio-oil) used as either a pure chemical feedstock or an additive in diesel fuels. HTL has been has been extensively investigated for ‘cleaner’ biomass feeds, and specifically microalgae, but is less well developed than hydrothermal carbonisation for sewage sludge applications.

Hydrothermal liquefaction related videos

TerraNova® Ultra Hydrothermal Carbonization of Sewage Sludge Source: TerraNovaEnergy / YouTube

TerraNova® Ultra Hydrothermal Carbonization of Sewage Sludge

A video to demonstrate the principles of the TerraNova® Ultra Hydrothermal Carbonization of sewage sludge.

Hydrothermal liquefaction features and blogs

PFAS molecule

How do you solve a problem like PFAS?

PFAS (per- and polyfluoroalkyl substances) are generated from the breakdown of fluorinated polymers. The activation barrier for their breakdown is huge and the only fully commercialised processes possibly capable of destroying PFAS are thermochemical ones.

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