Test facility for odorless lignin in Sweden: from waste to tax
Test facility for odorless lignin in Sweden: from waste to tax
LignoCity wants to put the paper-producing municipality of Kristinehamn on the global business map
The Swedish forest bioeconomy aims to expand beyond the production of timber and paper thanks to scientific research. For this purpose, the test and development facility LignoCity was founded two years ago with the help of the Swedish Research Institute (RISE) as a way to attract startups that want to work with lignin, a by-product of papermaking.
Lignin is the substance that binds the cells in plants and is thus a natural material, but until now it was only burned as fuel in the atmosphere. However, it has great potential for use in several different product areas, but its smell has so far been a challenge. Hopefully this will soon change thanks to an investment project from RISE that will open a unique test facility to produce odorless lignin.
Lignin can replace plastic in the future
Lignin is nature’s own glue. It is found in the cell walls of all plants and binds the fibers together and provides strength. The more lignin, the stronger the plant. Trees are made up of 20-30 percent lignin. This is what allows them to grow up to in some cases be over a hundred meters high.
The substance can be used, for example, in the replacement of plastic, fuel, asphalt, batteries, carbon fiber, in building and construction materials and as fire and UV protection.
It is an underutilized raw material, but its use is increasing. Projects are ongoing and one example is to replace the binder in asphalt from bitumen to lignin, experiments are being done on both a smaller and larger scale.
Thanks to lignin, the use of oil and coal can decrease in the future and contribute to a lower carbon footprint. It also enables a more complete utilization of the trees and plant mass.
Lignin is also a business opportunity
LignoCity is located close to Nordic Paper’s pulp production facility in Kristinehamn and can thus rely on a constant supply of the raw material lignin, which can be made available for use by contractor startups.
“This will be a completely unique test facility for the production of odorless sulphate lignin. We believe that this plant will open up more new markets for lignin products where it has previously been chosen not to proceed with product development due to the smell, which makes it possible to use it in consumer products and indoor applications. ” explained Anders Arkell, researcher at RISE and project manager for the investment project.
One company that is positive about this investment is Valmet, which owns intangible patents linked to the process.
“Our technology for reducing odor from lignin has previously been verified on a lab and pilot scale and the natural step is now to upgrade to a demo scale. We are incredibly happy about this opportunity to do this together with RISE and see many benefits of it being done in Bäckhammar in connection with LignoCity,Stated Hanna Karlsson, Process Manager for ash treatment and LignoBoost at Valmet.