title: Effect of hot-water extraction (HWE) severity on bleached pulp based biorefinery performance of eucalyptus during the HWE-Kraft-ECF bleaching process.
abstract: The effectiveness of a biorefinery based on an HWE-Kraft-ECF bleaching process and the end use of pulp was systematically evaluated. Using a P-factor of 198, nearly 30% of xylan-based sugars were recovered. The resulting pulp and paper properties were found to be comparable with the control. A maximum xylan-based sugar recovery of nearly 50% was achieved at a P-factor of 738. Although the strength of this P-factor induced handsheet was lower than that of the control by about 20%, the corresponding pulp was sufficient for dissolving pulp application. However, once the P-factor rose above 1189, hemicellulose sugars were significantly degraded into furans; pulp and paper properties were also deteriorated due to cellulose degradation, lignin deposition and condensation. Thus, considering the different end use of pulps, the performance of an HWE-based biorefinery could be balanced by its HWE severity.
authors: College of Material Engineering, Fujian Agriculture and Forestry University (FAFU), Fuzhou 350002, China.
authors: Jing
authors: J
authors: Liu
authors: College of Material Engineering, Fujian Agriculture and Forestry University (FAFU), Fuzhou 350002, China.
authors: Meng
authors: M
authors: Li
authors: College of Material Engineering, Fujian Agriculture and Forestry University (FAFU), Fuzhou 350002, China; Key Laboratory of Biofuel, Chinese Academy of Sciences, Qingdao Institute of Bioenergy and Bioprocess Technology, Qingdao 266101, China; Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China. Electronic address: xluo53@163.com.
authors: Xiaolin
authors: X
authors: Luo
authors: College of Material Engineering, Fujian Agriculture and Forestry University (FAFU), Fuzhou 350002, China.
authors: Lihui
authors: L
authors: Chen
authors: College of Material Engineering, Fujian Agriculture and Forestry University (FAFU), Fuzhou 350002, China.
authors: Liulian
authors: L
authors: Huang
mesh_terms: D000468:Alkalies / Q000737:chemistry; D001709:Biotechnology / Q000379:methods*; D057886:Bleaching Agents / Q000494:pharmacology*; D002241:Carbohydrates / Q000032:analysis; D002244:Carbon / Q000032:analysis; D002713:Chlorine / Q000737:chemistry*; D005052:Eucalyptus / Q000187:drug effects*; D005663:Furans / Q000032:analysis; D006358:Hot Temperature; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry*; D010100:Oxygen / Q000032:analysis; D010209:Paper; D013499:Surface Properties; D013718:Tensile Strength; D014783:Viscosity; D014867:Water; D014934:Wood / Q000187:drug effects; D014990:Xylans / Q000302:isolation & purification
chemical_list: D000468:Alkalies; D057886:Bleaching Agents; D002241:Carbohydrates; D005663:Furans; D014990:Xylans; D014867:Water; D002713:Chlorine; D002244:Carbon; D008031:Lignin; D010100:Oxygen
keywords: Biorefinery performance; ECF bleaching; Eucalyptus; Hot-water extraction (HWE); Kraft pulping