Bio-Tar: The Overlooked By-Product of Pyrolysis and Its Industrial Uses
Bio-tar is a liquid by-product of pyrolysis that is often overlooked, yet it has potential industrial applications when properly characterized.
When people talk about pyrolysis they usually mean the solid carbon product, biochar or charcoal. But pyrolysis also produces a condensable liquid fraction known as bio-tar, and a combustible gas fraction. Bio-tar is often treated as a secondary output, yet it carries its own potential value when properly characterized.
What is Bio-Tar?
Bio-tar is the liquid condensate formed when volatile compounds released during pyrolysis cool and condense. Its composition depends heavily on the feedstock and process conditions, so bio-tar should be treated as a variable material rather than a single standardized product.
Potential Industrial Uses
Depending on composition and further processing, bio-tar fractions have been investigated for uses including wood preservation, industrial adhesives and binders, chemical feedstock recovery, and as a fuel component for process heat in suitable combustion systems.
Handling and Characterization
Because bio-tar composition varies by feedstock, any industrial use requires laboratory characterization, contaminant screening and, where relevant, compliance with local regulations before a specific application is pursued.
CarbonTecX Approach
In the CarbonTecX pyrolysis process, bio-tar is generated alongside the primary solid carbon products from olive and other organic residues. Rather than treating it purely as waste, the system is designed to allow this fraction to be captured and evaluated for process heat or further valorization, supporting a more complete resource-efficiency approach to organic waste conversion.