title: Effects of water states on steam explosion of lignocellulosic biomass.
abstract: The work aimed to identify the complexity and roles of water states in steam explosion process of corn stalk to enhance the treatment efficiency. Results showed that two main water states with different mobility existed in corn stalk and influenced steam explosion treatment. By correlating dynamic water states data to feedstock mechanical properties and treatment process characteristics, the bound water being the excellent plasticizer that reduced the mechanical strength of fibers by over 30%, was conducive to treatment; while, the free water presenting buffering effects in treatment by hindering heat transfer which was reflected by the increase of temperature rising time by 1.29 folds and steam consumption by 2.18 folds, was not conducive. The distinguished point of these two waters was fiber saturated point. By considering treatment efficacy and energy consumption, the significance of fiber saturated point was highlighted as the optimal water states for steam explosion of corn stalk.
authors.affiliation: State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100039, China.
authors.forename: Wenjie
authors.initials: W
authors.lastname: Sui
authors.affiliation: State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China. Electronic address: hzchen@ipe.ac.cn.
authors.forename: Hongzhang
authors.initials: H
authors.lastname: Chen
mesh_terms: D018533:Biomass; D006358:Hot Temperature; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry*; D018547:Plant Stems; D013227:Steam; D003313:Zea mays / Q000737:chemistry
chemical_list: D013227:Steam; C036909:lignocellulose; D008031:Lignin
keywords: Enzymatic hydrolysis; Lignocellulosic biomass; Steam explosion; Water states