[1]张学杨,骆俊鹏,曹澄澄,等.玉米秸秆基生物炭吸附诺氟沙星特性研究[J].徐州工程学院学报(自然科学版),2019,(2):54-62.
 ZHANG Xueyang,LUO Junpeng,CAO Chengcheng,et al.Adsorption Property of Norfloxacin by Corn Stalk Biochar[J].Journal of Xuzhou Institute of Technology(Natural Sciences Edition),2019,(2):54-62.
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玉米秸秆基生物炭吸附诺氟沙星特性研究()
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《徐州工程学院学报》(自然科学版)[ISSN:1674-358X/CN:32-1789/N]

卷:
期数:
2019年第2期
页码:
54-62
栏目:
应用基础研究
出版日期:
2019-05-30

文章信息/Info

Title:
Adsorption Property of Norfloxacin by Corn Stalk Biochar
文章编号:
1674-358X(2019)02-0054-09
作者:
张学杨12骆俊鹏1曹澄澄13谭珍珍1肖 昕3李世钊1
(1. 徐州工程学院 环境工程学院,江苏 徐州 221018; 2. 江苏省机动车尾气污染控制重点实验室,江苏 南京 210093; 3. 中国矿业大学 环境与测绘学院,江苏 徐州 221116)
Author(s):
ZHANG Xueyang12LUO Junpeng1CAO Chengcheng13 TAN Zhenzhen1XIAO Xin3LI Shizhao1
(1.College of Environmental Engineering,Xuzhou University of Technology,Xuzhou 221018,China; 2.Jiangsu Key Laboratory of Vehicle Emissions Control,Nanjing 210093,China; 3.School of Environment Science and Spatial Informatics,China University of Mining a
关键词:
生物炭 诺氟沙星 玉米秸秆 吸附 吸收-分配
Keywords:
biochar norfloxacin corn stalk adsorption absorption-diffusion
分类号:
X71; R123.3
文献标志码:
A
摘要:
在300、450、600 ℃下制备了玉米秸秆基生物炭,通过孔径与比表面积分析仪、傅里叶红外光谱仪以及Boehm滴定对生物炭理化性质进行了表征,研究了生物炭吸附水中诺氟沙星的动力学、等温线、热力学,最后探讨了吸附机理.结果表明:随热解温度升高,生物炭比表面积与孔容积明显增大,孔径趋于变小,表面羧基与酚羟基等酸性官能团数量减少; 3种生物炭对诺氟沙星的吸附均符合准二级动力学方程; Langmuir方程对吸附等温结果拟合优于Freundlich方程,该吸附是吸热(ΔH>0)熵变增大(ΔS>0)的过程,吸附机理主要为物理吸附(ΔH<40 kJ·mol-1); 低温制备生物炭对诺氟沙星的饱合吸附量最大(114.20 mg·g-1),主要是由于低热解生物炭中存在大量非炭化有机质的吸收-分配作用.
Abstract:
The corn stalk biochar was produced at 300,450 and 600 ℃.The physicochemical properties of biochar were studied by pore size and specific surface area analyzer,FTIR and Boehm titration.Then,the adsorption dynamics,isothermals,thermodynamics as well as adsorption mechanism were investigated.The results showed that with the increase of pyrolysis temperature,the specific surface area and pore volume of biochar increased significantly,the pore size tended to decrease,and the number of acidic functional groups such as carboxyl groups and phenolic hydroxyl groups decreased.The adsorption of Norfloxacin by three kinds of biochars accorded with quasi-second-order kinetic equation(R2>0.9731).Langmuir equation(R2>0.9173)fitted the adsorption isotherm better than Freundlich equation(R2>0.9099).The adsorption was a process of endothermic(ΔH>0)entropy change(ΔS>0).The adsorption mechanism was mainly physical adsorption(ΔH<40 kJ·mol-1).The saturation adsorption of norfloxacin on biochars prepared at low temperature was the largest(114.20 mg·g-1),mainly due to the absorption-distribution of non-carbonized organic matter in low pyrolysis biochars.

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备注/Memo

备注/Memo:
收稿日期:2018-09-02 基金项目:江苏省高等学校自然科学研究重大项目(18KJA610003); 江苏省自然科学基金项目(BK20170249); 徐州市科技计划项目(KC15SH017); 江苏省机动车尾气污染控制重点实验室开放基金(OVEC035); 徐州工程学院培育项目(XKY2017121) 作者简介:张学杨(1982-),男,博士,副教授,主要从事生物质炭在环境污染治理中的应用研究.
更新日期/Last Update: 2019-05-30