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当前位置: 首页 > 文章 > 生物炭对三氯乙烯吸附特性及机理研究 东北农业大学学报 2018 (12) 36-43
Position: Home > Articles > Study on adsorption characteristics and mechanism of biochar on trichloroethylene Journal of Northeast Agricultural University 2018 (12) 36-43

生物炭对三氯乙烯吸附特性及机理研究

作  者：
孟庆娟;刘莹;李鹏飞;梁世超;张颖
单  位：
东北农业大学资源与环境学院
关键词：
三氯乙烯;生物炭;吸附性能;吸附机理
摘  要：
以自制生物炭为吸附材料,探究3种生物炭对三氯乙烯(TCE)吸附特性,结合元素和热重分析等方法探讨生物炭吸附TCE机理。结果表明,3种生物炭对TCE吸附平衡时间为24 h,等温吸附曲线符合Freundlich模型,吸附性能排序为C-550>C-850>C-250。热解温度越高生物炭芳香性越高,极性越低,脂肪性成分和含氧官能团越少,比表面积越大,微介孔结构越多。推测生物炭对TCE吸附效果与生物炭的芳香性、极性、比表面积等因素有关,也与制备原料和裂解温度密切相关。
译  名：
Study on adsorption characteristics and mechanism of biochar on trichloroethylene
作  者：
MENG Qingjuan;LIU Ying;LI Pengfei;LIANG Shichao;ZHANG Ying;School of Resources and Environmental Sciences, Northeast Agricultural University;
单  位：
MENG Qingjuan%LIU Ying%LI Pengfei%LIANG Shichao%ZHANG Ying%School of Resources and Environmental Sciences, Northeast Agricultural University
关键词：
trichloroethylene;;biochar;;adsorption characteristic;;adsorption mechanism
摘  要：
The adsorption characteristics of self-made biochar on organochlorine solvent trichloroethylene(TCE)were explored through balance test, and combined with elemental analysis and thermogravimetric analysis, the mechanism of biochar adsorption TCE was explored. The results showed that the adsorption time of three biochars to TCE was 24 h, and the isothermal adsorption curve was in accordance with the Freundlich model, the adsorption performance was C-550>C-850>C-250.With the increase of pyrolysis temperature, biochar had higher aromaticity, less fat composition, less oxygen-containing functional groups, larger surface area and more mesoporous structure. And it was speculated that the adsorption of TCE by biochar was related to the aromaticity, polarity, and surface area, raw material and cracking temperature.

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