河南农业大学学报2018，Vol.52Issue(2)：238-243,6.
3种预处理对青贮玉米秸秆理化特性的比较研究
Comparative study on physical and chemical properties of silage corn straw by three pretreatment methods
摘要
Abstract
In this study,the physical characteristics and physicochemical composition of the silage straws treated by 3 pretreatment methods,i.e.steam explosion,thermal spraying and alkali stacking were analyzed.The characteristics of sedimentation and hydrophilicity index of the corn stalk in water after pretreatment were measured.Various pretreatment methods,in the meantime,were compared and evaluated by microscopy,infrared spectroscopy,X-ray diffraction,and thermogravimetric analysis.The results showed that the physiochemical properties of silage corn stalks were significantly different after three different pretreatments.After steam explosion,the surface of the straw showed hydrophilicity,the sedimentation ratio decreased from 87.3％ of the raw material to 0％,and the BET surface area was 65.2％ higher than the raw material.Microscopic observation showed that the cell wall of the straw was completely broken after steam explosion and the cellulose crystallinity decreased to 33.11％.Compared with the other two methods,steam explosion can significantly change the structure of corn stalks and make them more conducive to degradation.In a word,ICSE is an ideal pretreatment method.关键词
蒸汽爆破/亲水指数/比表面积/X射线衍射Key words
Instant catapult steam explosion/hydropathy index/BET surface area/X-ray diffraction分类
农业科技引用本文复制引用
谢慧,李志敏,于政道,任天宝,王风芹,杨森,宋安东,张百良..3种预处理对青贮玉米秸秆理化特性的比较研究[J].河南农业大学学报,2018,52(2):238-243,6.基金项目
国家自然科学基金项目(21406055) （21406055）
河南省科技创新人才计划(164100510016) （164100510016）
河南省科技扦放合作项目(162106000014) （162106000014）
河南省高校科技创新团队支持计划(151RTSTHN014) （151RTSTHN014）
