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A techno-economic assessment of an upgrading procedure and outtake of a pre-hydrolysate in a presumed dissolving pulp mill was performed. Pre-hydrolysis of spruce wood chips in pilot scale produced input data for energy and mass balances and was performed with and without subsequent membrane filtration to produce hydrolysate fractions rich in galactoglucomannan and with some lignin. The hydrolysate...
Quartz crystal microbalance with dissipation (QCM-D) monitoring was performed to investigate the impact of steam treatment (ST) on the enzymatic hydrolysis of lignocellulosic nanofibrils (LCNFs). ST at mild temperatures up to 140 °C mainly affected the hemicellulose content of LCNFs. The hemicellulose constituents in the water-soluble fraction and the residual LCNF were quantified. The impact of changes...
This work describes the comprehensive characterization of the degradation products obtained after the alkaline steeping of dissolving pulp. Total chlorine free bleached beech sulfite pulp was treated with 18 % sodium hydroxide at different temperatures (40, 50 and 60 °C) for time periods of up to 80 h. After the removal of the insoluble cellulose, the remaining alkali solution was treated with sulfuric...
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