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Circular cellulose to textile fiber production

Reference number
Coordinator Chalmers Tekniska Högskola AB - Chalmers Tekniska Högskola Inst f Kemi- & kemiteknik
Funding from Vinnova SEK 2 260 000
Project duration August 2021 - October 2023
Status Completed
Venture The strategic innovation programme Bioinnovation
Call PhD and post-doc projects for resource-smart industrial processes within BioInnovation

Purpose and goal

The purpose was to enable a circular and resource-efficient cellulose economy in Sweden. Oat husk, wheat straw, cotton, and viscose, were identified as having potential market, and were processed for extraction of cellulose and converted into a dissolving pulp. Highest market potential can be seen in the oat husk track, where the logistics already exists, the volumes are rather high (40 000 tons/year in the southern Sweden), and no higher value than biogas are seen today. The project has supervised 6 diploma workers, and generated 3 manuscripts, to be published in scientific journals.

Expected results and effects

The conclusions from this project points at the opportunities (incl. relevance of scaling up processes and market potential) by cellulose residues. It was shown that pulps with good properties can be extracted from wheat straw and oat husk, where high potential can be shows. The technoeconomic and environmental analysis identified hot spots in the process for further optimization. Results were presented on multiple occasions to various audiences, and it is expected that it may increase the interest in the more resource efficient utilization of those streams.

Planned approach and implementation

The project was designed for a 2 year work and based on 7 smaller work packages to achieve the purpose and goals. The main focus was to develop and optimize the extraction of cellulose from selected cellulose-rich residues to validate the most resource-efficient extraction processes, based on material properties, material yield, and chemical and energy demand. As the research was of applied character and involved both industry and academia some modifications to the project plan were applied with the approval of the steering group.

External links

The project description has been provided by the project members themselves and the text has not been looked at by our editors.

Last updated 2 December 2023

Reference number 2021-02093

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