Abstract
This study evaluated the effects of microbial (Bacillus subtilis, Bacillus licheniformis) pretreatment and mechanical (ball mill) treatment on the nanofibrillation of cellulose. The optimal growth conditions were identified a B. subtilis (pH 6-8, 25℃ and 100 rpm) and B. licheniformis (pH 7, 35℃ and 150 rpm), respectively. As a result of evaluating microbial reducing sugar production from carboxymethyl cellulose, B. subtilis case showed similar trends at most experimental conditions (pH, temperature and rpm) except for pH 5. The maximum amount of reducing sugar by B. licheniformis was achieved at the culture conditions with pH 7, 35℃ and 150 rpm. There was no change in the crystalline structure of cellulose by ball mill and microbial treatment, but, XRD peaks intensity decreased. Cellulose nanofibers were observed after 6 hours ball mill treatment of alpha cellulose with/without the microbial pretreatment. When applying microbial pretreatment, the cellulose nanofibers produced by the ball mill had more longer in length than those without the pretreatment.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Journal of Korea Technical Association of The Pulp and Paper Industry
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.