Xylan extraction strategies and the performance of the resulting high purity cellulose fiber to swelling and dissolution
In this study, we investigated the influence of hemicelluloses removal treatment on the reactivity of the resulting pulp. The idea was to develop treatment strategies consisting of mechanical refining (different refining technologies), chemical treatment (CCE), and xylanase treatment that enabled bo...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-06-01
|
| Series: | Carbohydrate Polymer Technologies and Applications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666893922000147 |
| _version_ | 1811243478698426368 |
|---|---|
| author | Gloria I. Ngene Jean-Claude Roux Dominique Lachenal |
| author_facet | Gloria I. Ngene Jean-Claude Roux Dominique Lachenal |
| author_sort | Gloria I. Ngene |
| collection | DOAJ |
| description | In this study, we investigated the influence of hemicelluloses removal treatment on the reactivity of the resulting pulp. The idea was to develop treatment strategies consisting of mechanical refining (different refining technologies), chemical treatment (CCE), and xylanase treatment that enabled both quantitative xylan removal as well as good reactivity to dissolution without the need for additional post-extraction treatments (cellulose activation) to improve reactivity. Cellulose post-extraction treatments result in additional production costs. The reactivity of the extracted pulps was evaluated based on the degree of swelling in NaOH and dilute cupriethylene diamine solution (CUEN), the solubility in 8% NaOH at -10 °C, and the Fock reactivity. The result obtained showed that hemicelluloses removal strategies that included mechanical refining treatment led to better pulp reactivity than unrefined pulp. The best result was obtained with refined pulp extracted with 6% soda (cellulose II not detected). In addition, we obtained a Fock reactivity ranging from 60 to 70%. The good correlations found between fiber swelling, solubility in caustic soda, and Fock reactivity suggest that the tedious Fock test could be substituted by the much simpler swelling and solubility measurements. The negative impact of cellulose II on pulp reactivity is due to the higher number of hydrogen bonds formed under dewatering and drying. This problem would most likely be averted in the ideal case where pulp dissolution is integrated into the pulp mill. |
| first_indexed | 2024-04-12T14:08:05Z |
| format | Article |
| id | doaj.art-c3d63f727c1f4e328664528db549cd3f |
| institution | Directory Open Access Journal |
| issn | 2666-8939 |
| language | English |
| last_indexed | 2024-04-12T14:08:05Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbohydrate Polymer Technologies and Applications |
| spelling | doaj.art-c3d63f727c1f4e328664528db549cd3f2022-12-22T03:30:01ZengElsevierCarbohydrate Polymer Technologies and Applications2666-89392022-06-013100196Xylan extraction strategies and the performance of the resulting high purity cellulose fiber to swelling and dissolutionGloria I. Ngene0Jean-Claude Roux1Dominique Lachenal2Corresponding author.; University Grenoble Alpes, CNRS, Grenoble INP*, LGP2, F-38000 Grenoble, FranceUniversity Grenoble Alpes, CNRS, Grenoble INP*, LGP2, F-38000 Grenoble, FranceUniversity Grenoble Alpes, CNRS, Grenoble INP*, LGP2, F-38000 Grenoble, FranceIn this study, we investigated the influence of hemicelluloses removal treatment on the reactivity of the resulting pulp. The idea was to develop treatment strategies consisting of mechanical refining (different refining technologies), chemical treatment (CCE), and xylanase treatment that enabled both quantitative xylan removal as well as good reactivity to dissolution without the need for additional post-extraction treatments (cellulose activation) to improve reactivity. Cellulose post-extraction treatments result in additional production costs. The reactivity of the extracted pulps was evaluated based on the degree of swelling in NaOH and dilute cupriethylene diamine solution (CUEN), the solubility in 8% NaOH at -10 °C, and the Fock reactivity. The result obtained showed that hemicelluloses removal strategies that included mechanical refining treatment led to better pulp reactivity than unrefined pulp. The best result was obtained with refined pulp extracted with 6% soda (cellulose II not detected). In addition, we obtained a Fock reactivity ranging from 60 to 70%. The good correlations found between fiber swelling, solubility in caustic soda, and Fock reactivity suggest that the tedious Fock test could be substituted by the much simpler swelling and solubility measurements. The negative impact of cellulose II on pulp reactivity is due to the higher number of hydrogen bonds formed under dewatering and drying. This problem would most likely be averted in the ideal case where pulp dissolution is integrated into the pulp mill.http://www.sciencedirect.com/science/article/pii/S2666893922000147Paper-grade pulpMechanical refiningCold caustic extractionXylanase treatmentDissolving pulpCellulose fiber swelling |
| spellingShingle | Gloria I. Ngene Jean-Claude Roux Dominique Lachenal Xylan extraction strategies and the performance of the resulting high purity cellulose fiber to swelling and dissolution Carbohydrate Polymer Technologies and Applications Paper-grade pulp Mechanical refining Cold caustic extraction Xylanase treatment Dissolving pulp Cellulose fiber swelling |
| title | Xylan extraction strategies and the performance of the resulting high purity cellulose fiber to swelling and dissolution |
| title_full | Xylan extraction strategies and the performance of the resulting high purity cellulose fiber to swelling and dissolution |
| title_fullStr | Xylan extraction strategies and the performance of the resulting high purity cellulose fiber to swelling and dissolution |
| title_full_unstemmed | Xylan extraction strategies and the performance of the resulting high purity cellulose fiber to swelling and dissolution |
| title_short | Xylan extraction strategies and the performance of the resulting high purity cellulose fiber to swelling and dissolution |
| title_sort | xylan extraction strategies and the performance of the resulting high purity cellulose fiber to swelling and dissolution |
| topic | Paper-grade pulp Mechanical refining Cold caustic extraction Xylanase treatment Dissolving pulp Cellulose fiber swelling |
| url | http://www.sciencedirect.com/science/article/pii/S2666893922000147 |
| work_keys_str_mv | AT gloriaingene xylanextractionstrategiesandtheperformanceoftheresultinghighpuritycellulosefibertoswellinganddissolution AT jeanclauderoux xylanextractionstrategiesandtheperformanceoftheresultinghighpuritycellulosefibertoswellinganddissolution AT dominiquelachenal xylanextractionstrategiesandtheperformanceoftheresultinghighpuritycellulosefibertoswellinganddissolution |