烟草科技Issue(5)：14-18,5.DOI:10.16135/j.issn1002-0861.20150503
烤烟秸秆炭化后理化特性分析
Analysis of Physical and Chemical Properties of Carbonized Tobacco Stalks
摘要
Abstract
For better utilization of tobacco stalks and clean tobacco production in fields, the physical and chemical properties of flue-cured tobacco stalks carbonized at different temperatures were studied. The results showed that the yield of tobacco stalk carbonization reduced with a rise in temperature. The total carbon content in carbonized stalk was slightly affected in low temperature carbonization, however it declined as the temperature rose to 300 ℃and above. Carbonate ions and inorganic carbon content was very low in low temperature carbonization, which increased obviously once temperature reached up to 400 ℃. In low temperature carbonization, the pH of tobacco-stalk-biochar presented weak acid, pH value rose steadily and turned alkaline from 300 to 800 ℃. The cation exchange capacity (CEC) of tobacco-stalk-biochar increased first, then dropped with a rise in temperature, and peaked at 400 ℃. With a rise in carbonization temperature, the alkaline functional groups increased, while acidic functional groups reduced on the surface of tobacco-stalk-biochar. Tobacco-stalk-biochar was of porous structure. The appropriate carbonization temperature for flue-cured tobacco stalks is 400-500 ℃.关键词
烤烟/秸秆/炭化/理化特性Key words
Flue-cured tobacco/Stalk/Carbonization/Physical and chemical property分类
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叶协锋,于晓娜,孟琦,刘迎昌,宋显锋,刘国庆,刘媛媛,聂鑫..烤烟秸秆炭化后理化特性分析[J].烟草科技,2015,(5):14-18,5.基金项目
烟草行业烟草栽培重点实验室资助项目“植烟土壤肥力培育及提高肥料利用率技术研究”；河南省烟草公司资助项目“秸秆生物质炭对土壤-烤烟养分高效协同利用机制研究”（ HYKJ201301）；重庆市烟草公司资助项目“云烟品牌导向型生态优质烟叶生产技术模式构建研究与推广”（NY20140401070010）。 （）
