Knowledge Resource Center for Ecological Environment in Arid Area
COOKING OF DRY HIGH-LIGNIN EUCALYPTUS CAMALDULENSIS CHIPS FOLLOWED BY TCF BLEACHING WITH HYDROGEN PEROXIDE | |
Fiskari, Juha1; Vihela, Tuomas2; Ruuttunen, Kyosti2; Ali-Rekola, Ville2; Hautala, Sanna3; Sixta, Herbert2 | |
通讯作者 | Fiskari, Juha |
来源期刊 | CELLULOSE CHEMISTRY AND TECHNOLOGY
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ISSN | 0576-9787 |
出版年 | 2017 |
卷号 | 51期号:9-10页码:857-861 |
英文摘要 | This paper describes laboratory experiments with Eucalyptus camaldulensis grown in South Asia. Pulping of E. camaldulensis is known to be challenging because of its high lignin content. Moreover, E. camaldulensis chips originating from arid and semi-arid regions of South Asia have often a very low moisture content, which further complicates their pulping. In this research, chips with 5.5% moisture content were screened and the accept fraction underwent a pressurized soaking treatment, which seemingly dissolved carbohydrates, extractives and lignin. The rewetted chips were cooked to a kappa number of 18, oxygen delignified and bleached with hydrogen peroxide. The yield was 45.4% based on unbleached pulp. Pulp viscosities after cooking, oxygen delignification and bleaching were 830, 700, and 600 mL/g, respectively. The high active alkali charge in cooking apparently resulted in low pulp viscosities. In addition to lignin, E. camaldulensis probably contained other polyphenolic compounds, which further consumed alkali. The bleached pulp brightness was 85.5% ISO. |
英文关键词 | conventional batch cooking Eucalyptus camaldulensis dry chips lignin content hydrogen peroxide bleaching |
类型 | Article |
语种 | 英语 |
国家 | Finland |
收录类别 | SCI-E |
WOS记录号 | WOS:000425762900007 |
WOS关键词 | ALKALI IMPREGNATION ; PULP ; SEQUENCE ; GROWTH |
WOS类目 | Materials Science, Paper & Wood |
WOS研究方向 | Materials Science |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/198071 |
作者单位 | 1.Univ Helsinki, Dept Chem, Lab Organ Chem, AI Virtasen Aukio 1, Helsinki 00560, Finland; 2.Aalto Univ, Sch Chem Technol, Dept Forest Prod Technol, FIN-02015 Espoo, Finland; 3.Finnish Forest Res Inst METLA, POB 18, FIN-01301 Vantaa, Finland |
推荐引用方式 GB/T 7714 | Fiskari, Juha,Vihela, Tuomas,Ruuttunen, Kyosti,et al. COOKING OF DRY HIGH-LIGNIN EUCALYPTUS CAMALDULENSIS CHIPS FOLLOWED BY TCF BLEACHING WITH HYDROGEN PEROXIDE[J],2017,51(9-10):857-861. |
APA | Fiskari, Juha,Vihela, Tuomas,Ruuttunen, Kyosti,Ali-Rekola, Ville,Hautala, Sanna,&Sixta, Herbert.(2017).COOKING OF DRY HIGH-LIGNIN EUCALYPTUS CAMALDULENSIS CHIPS FOLLOWED BY TCF BLEACHING WITH HYDROGEN PEROXIDE.CELLULOSE CHEMISTRY AND TECHNOLOGY,51(9-10),857-861. |
MLA | Fiskari, Juha,et al."COOKING OF DRY HIGH-LIGNIN EUCALYPTUS CAMALDULENSIS CHIPS FOLLOWED BY TCF BLEACHING WITH HYDROGEN PEROXIDE".CELLULOSE CHEMISTRY AND TECHNOLOGY 51.9-10(2017):857-861. |
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