To this end, an enrichment culture was carried out in a minimal medium with different lignin-related aromatic substrates (ferulate, guaiacol and lignin-enriched pulping stream form softwood) as the sole source of carbon and energy.
A number of different bacterial species were isolated by successive streaking on mineral M9 medium plates supplemented with different lignin-related model compounds, namely ferulic acid and guaiacol or lignin-rich softwood pulping streams.
In this study, new wood-inspired films were developed from microfibrillated cellulose and galactoglucomannan lignin networks isolated from chemothermomechanical pulping side streams and cross-linked using laccase enzymes.
Upgrading of potato pulp, a byproduct stream from industrial manufacture of potato starch, is important for the continued economic competitiveness of the potato starch industry.
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However, black liquor obtained from different sources can have varying properties, depending on feedstock stream and pulping process employed at the pulp mill, and consequently is compositionally different.
It has developed a proprietary gasification technology that converts black liquor, a waste stream in pulp and paper mills, into high-quality synthesis gas which can then be processed into a variety of advanced biofuels or green chemicals or used to drive turbines to make electricity.
Current research suggests that PAC is a technically viable opportunity for lignin waste streams from pulp mills and biorefineries partially due to lignin's similarities to lignite coal, the primary feedstock for PAC in this application.
The concept studied offers efficient utilization of the various components in fiber sludge hydrolysates and affords a possibility to combine production of two high value-added products using residual streams from pulp mills and biorefineries.
A theoretical model of an electrodialysis process for the removal of metal ions in process stream of the pulp and paper industry has been developed in this article.
Lignin which is dissolved in the residual black liquor stream of Kraft pulping mills can be extracted and converted into a wide range of value-added bio-based products.
