Unlocking Value from complex Biomass Streams
The efficient utilization of bio-based materials requires processing technologies that are not only sustainable, but also scalable, and economically viable. As industries increasingly turn toward bio-based and circular raw materials, the ability to efficiently recover valuable components from complex feedstocks becomes critical.
Counter current extraction (CCE) is one of the most promising methods to meet this demand. In this process, the solvent flows through the material in the opposite direction to the solid feed, significantly improving extraction efficiency. The process operates in a high consistency under controlled temperature conditions with heating provided via a steam jacket and chemical feeds controlled across multiple process zones.
Why counter current extraction?
Compared to conventional batch extraction methods, counter current extraction offers various technical and commercial advantages:
- Higher extraction efficiency with lower solvent consumption
- Improved process control, including residence time, temperature and solvent gradients
- Reduced environmental footprint, supporting sustainable product development
At KCL, counter current extraction can be tested and optimized at three different scales: tabletop, semi-pilot and industrial pilot scales. With these we are bridging the gap between laboratory trials and industrial implementation. This allows realistic simulation of industrial conditions and generation of reliable scale-up data.
We are offering:
- early-stage feasibility testing
- scale-up trials
- process parameter optimization
- chemistry evaluation
- fractionation studies
Processing a wide range of materials
Counter current extraction can be used for a variety of materials, including both virgin and recycled ones:
- Wood and lignocellulosic materials
CCE enables controlled separation of hemicellulose, extractives and other functional compounds from wood-based feedstocks. This opens opportunities for advanced bio-based chemicals, coatings, barrier materials and functional additives. - Agricultural materials
Side streams such as straw, husks and other agro residues contain valuable compounds that can be efficiently recovered. Counter current extraction allows valorisation of these underutilized fractions, supporting higher-value applications beyond energy use. - Textile materials
From natural fibres to blended textile structures, CCE can be used to separate dyes, finishing chemicals and fibre fractions. This supports the development of textile recycling and regeneration pathways. - Waste streams and leftover fractions
Many industrial processes generate complex residual streams that still contain valuable components. Counter current extraction enables systematic recovery of functional fractions from these materials, transforming waste into new product opportunities. - Recycled materials
In material recycling, CCE can help remove additives and impurities while preserving material quality. This supports higher-grade recycled material applications and improved circularity.
From biomass to business
Counter current extraction is a platform technology for transforming low-value biomass streams into high-value bio-based products. By combining technical performance with pilot-scale validation, KCL helps companies move from concept to commercial reality faster and with lower risk.
Counter current extraction offers a powerful pathway to unlock the full potential of bio-based materials — sustainably, efficiently, and at scale.
For more information, contact:
Henrikki Mertaniemi, Pilot technologies
henrikki.mertaniemi(at)kcl.fi
+358 40Â 849 4395