Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7071347 | Bioresource Technology | 2016 | 18 Pages |
Abstract
Cost-effectiveness is vital for enzymatic treatment of dissolving pulp towards industrial application. The strategy of cellulase recycling with fresh cellulase addition was demonstrated in this work to activate the dissolving pulp, i.e. decreasing viscosity and increasing Fock reactivity. Results showed that 48.8-35.1% of cellulase activity can be recovered from the filtered liquor in five recycle rounds, which can be reused for enzymatic treatment of dissolving pulp. As a result, the recycling cellulase with addition fresh cellulase of 1Â mg/g led to the pulp of viscosity 470Â mL/g and Fock reactivity 80%, which is comparable with cellulase charge of 2Â mg/g. Other pulp properties such as alpha-cellulose, alkaline solubility and molecular weight distribution were also determined. Additionally, a zero-release of recycling cellulase treatment was proposed to integrate into the dissolving pulp production process.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Qiang Wang, Shanshan Liu, Guihua Yang, Jiachuan Chen, Xingxiang Ji, Yonghao Ni,