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Improving bamboo pulp delignification by grapheme-oxide- immobilised laccase-mediator system |
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| รหัสดีโอไอ | |
| Creator | Xue-Fei Zhou |
| Title | Improving bamboo pulp delignification by grapheme-oxide- immobilised laccase-mediator system |
| Contributor | Fan-Gong Kong, Wen-Jun Li, Shuang-Xi Nie |
| Publisher | Maejo University |
| Publication Year | 2565 |
| Journal Title | Maejo International Journal of Science and Technology |
| Journal Vol. | 16 |
| Journal No. | 2 |
| Page no. | 161 |
| Keyword | laccase-mediator system (LMS), grapheme-oxide-immobilised LMS, bamboo pulp, bio-delignification, residual lignin |
| Website title | Maejo International Journal of Science and Technology |
| ISSN | 1905-7873 |
| Abstract | A laccase mediator system (LMS), i.e. Lac/ABTS, was used for bamboo pulp delignification. Both laccase and 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) were then immobilised on graphene oxide (GO) to obtain GO-immobilised LMS, i.e. Lac/ABTS/GO. Lac/ABTS was also comparatively studied. The delignification selectivity and pulp properties achieved were better with Lac/ABTS/GO than Lac/ABTS in the catalytic delignification of bamboo pulp. The scanning electron micrograph of Lac/ABTS/GO-treated pulp showed a positive change in morphology and integrity of the pulp. UV resonance Raman spectroscopy also confirmed the better catalytic selectivity of Lac/ABTS/GO. Further, gel permeation chromatography, 31phosphorus nuclear magnetic resonance spectra and Fourier-transform infrared spectra of residual lignin samples from the treated pulp indicated an increase in the degradation and oxidation of lignin by Lac/ABTS/GO. |
