周涵君,于晓娜,孟琦,马明,王鹏,张胜,叶协锋

• 1:河南农业大学烟草学院
• 2:中国烟草总公司郑州烟草研究院
• 3:湖北中烟工业责任有限公司
• 4:湘西自治州烟草公司

摘要(Abstract)：

以农业废弃物油菜秸秆为原料,采用低氧升温炭化法,在不同热解温度(300,400,500,600,700℃)下分别炭化2 h,制备生物炭,收集并测定固体产物生物炭特性及孔隙结构。结果表明,随着热解温度的升高,油菜秸秆生物炭p H值逐渐增加,当温度达到400℃及400℃以上时呈碱性甚至强碱性。热解温度高于400℃时,油菜秸秆生物炭的矿质元素含量相对富集,表面碱性含氧官能团增加、酸性含氧官能团减少。阳离子交换量在400～500℃条件下达到较高水平,为77.39～80.00 cmol·kg-1。红外光谱表明,热解温度高于300℃时,油菜秸秆的芳香基团开始形成。随着热解温度的升高,油菜秸秆生物炭的比表面积和比孔容均是先变大后变小,在400～500℃条件下孔隙结构的发育和孔体积的形成比较好,具有较大的比表面积和比孔容,生物炭产出率相对较高,养分损失少,生物炭的理化性能、养分利用及孔隙结构均达到最优。

关键词(KeyWords)： 油菜秸秆;生物炭;热解温度;理化特性;孔隙结构

Abstract:

Keywords:

基金项目(Foundation): 烟草行业烟草栽培重点实验室项目(30800665);; 河南省烟草公司项目(HYKJ201301);; 重庆市烟草公司项目(NY20140401070010)

作者(Author): 周涵君,于晓娜,孟琦,马明,王鹏,张胜,叶协锋

DOI: 10.16445/j.cnki.1000-2340.2018.06.019

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