河南农业大学学报2017，Vol.51Issue(1)：108-114,7.
热解温度对花生壳生物炭产率及部分理化特性的影响
Pyrolysis temperature on the peanut-shell-biochar production rate and some physical and chemical properties
摘要
Abstract
To study the characteristics of peanut-shell-biochar,evaluate its application value and po tential in agricultural and environmental field,this study carbonized peanut shell under different temperatures,300℃,500℃,700℃,respectively,and then measured the basic physical and chemical properties,in order to explore the characteristics and changing rule of peanut-shell-biochar with the pyrolysis temperatures.In this paper,peanut shell was put into the muffle furnace and carbonized for 2h with low-oxygen under different temperatures.The temperature was increased at a rate of 20 ℃/min,and then its physico-chemical properties were deternined.The results show that,with the increase of pyrolysis temperature,biochar production rate and CEC gradually decreased;Mineral macroelements content increased with the increase of pyrolysis temperature,particularly in the process of 500℃ ～700℃;Among the micromineral elements,element B had no obvious change rule and the other elements increased with the rise of pyrolysis temperature;With the temperature increasing,the number of alkaline functional groups on the surface of peanut-shell-biochar showed an increasing trend,while that of the acidic functional groups decreased;Peanut-shell-biochar pH changed from acidic to alkaline,and had a higher degree of aromatization,which enhanced its stability;Peanut-shell-biochar porosity under the condition of high temperature (700℃) was comparatively developed,micropores and mesopores were more abundant at higher temperatures,and the proportion of micropores was larger.关键词
花生壳生物炭/矿质元素/官能团/孔隙结构Key words
peanut-shell-biochar/mineral elements/functional groups/pore structure分类
资源环境引用本文复制引用
于晓娜,张晓帆,李志鹏,周涵君,付仲毅,孟琦,叶协锋..热解温度对花生壳生物炭产率及部分理化特性的影响[J].河南农业大学学报,2017,51(1):108-114,7.基金项目
烟草行业烟草栽培重点实验室资助项目(30800665) （30800665）
河南省烟草公司资助项目(HYKJ201301) （HYKJ201301）
