吉林大学学报（理学版）Issue(4)：855-860,6.DOI:10.13413/j.cnki.jdxblxb.2014.04.44
不同热解温度下生物质废弃物制备的生物质炭组成及结构特征
Structure and Composition Characteristics of Biochars Derived from Biomass Wastes at Different Pyrolysis Temperatures
摘要
Abstract
Biomass charcoals were made from 3 kinds of biomass wastes,maize straw,branches and leaves trees at 350,550,750 ℃,respectively.The structure and composition characteristics of biomass charcoals were characterised by thermogravimetric analysis,FT-IR analysis,Boehm titration and X-ray diffraction analysis.The results show that maize straw has the lowest thermal stability and the highest mass loss,followed by those of the branches and leaves.Compared with branches and leaves, maize straw has the greatest dispersion degree in X-ray diffraction with a less layer number of microcrystalline.The total quantity of surface functional groups in biomass charcoals made from different feedstocks at the same temperature is similar,the pH value has larger differences and biochars derived from maize straw have the highest pH value.Results of characterization of biochars derived from the same feedstock show that with the increase of pyrolysis temperature, the aromatization degree of biochars increases;the content of surface functional groups decreases;pH value increases;the characteristic peaks of cellulose and hemicellulose disappear;the structure of biomass charcoals tends to graphite crystallite structure.关键词
生物质炭/热解温度/表征/玉米秸秆/树枝/树叶Key words
biochar/pyrolysis temperature/characterization/maize straw/branches of wood/leaves分类
资源环境引用本文复制引用
郭平,王观竹,许梦,李旭,李琳慧,于济通..不同热解温度下生物质废弃物制备的生物质炭组成及结构特征[J].吉林大学学报（理学版）,2014,(4):855-860,6.基金项目
国家自然科学基金(批准号:40971248)和国家水体污染控制与治理科技重大专项基金(批准号:2012ZX07208-011) （批准号:40971248）
