磁性花生壳生物碳的制备及其吸附性能综合实验设计

doi:10.3866/PKU.DXHX202107060

Abstract

Abstract:

The biochar was prepared by pyrolysis method, using different biomass as raw materials. By screening, peanut shell biochar was selected, and Fe₃O₄ magnetic material was loaded for treatment of tetracycline in water sample. The magnetic peanut shell biochar was characterized by scanning electron microscop (SEM), specific surface area analyzer (BET) and X-ray diffraction (XRD), and the adsorption kinetics, isotherm characteristics and various factors affecting the removal effect were studied. Through this comprehensive experiment, students can establish the idea of "treating waste with waste", and master the method of preparing adsorbent using waste, material characterization technology and pollutant regulation methods. In addition, this experiment can improve students' awareness of innovation and the ability to apply what they have learned to solve practical problems.

Key words: Biochar, Magnetic, Adsorption, Tetracycline, Comprehensive experiment

Yuwang Chen, Shuxian Wang, Jiao Zhang, Xiaofang Yang, Chunyue Cui, Qiuyue Li, Guihua Zhang. Design of Comprehensive Experiment of Synthesis and Adsorptive Property of Magnetic Peanut Shell Biochar[J].University Chemistry, 2021, 36(11): 2107060.

生物碳类型	Langmuir吸附等温模型			Freundlich吸附等温模型
生物碳类型	G₀/(mg·g^-1)	A	R²	k_F	1/n	R²
花生壳	30.70	0.0340	0.9951	8.026	0.2915	0.9797
玉米	19.07	0.0428	0.9925	0.5055	0.7683	0.9305
小麦	17.23	0.0506	0.9867	0.2684	0.9388	0.9225
辣椒	16.03	0.1001	0.9745	0.1202	1.098	0.9228

实验单元	具体内容	学时
1单元	介绍国内抗生素污染现状、处理技术、吸附法特点以及生物碳吸附剂研究现状，以及图书馆数字资源库的使用方法及代表性文献查询方法，布置实验任务，自主设计实验过程	1学时
2单元	听取学生的实验方案汇报，进一步优化和确定生物碳、磁性生物碳的制备及吸附实验的关键因素实验。同时讲授实验操作中注意事项	2学时
3单元	制备生物碳，负载磁性材料并进行测试。利用开放实验室，在实验教师指导下，学生自主参与相关测试表征及操作流程	4学时
4单元	开展不同生物碳吸附对比，磁性生物碳对四环素吸附特性，影响因素实验及实验结果分析	5学时

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Design of Comprehensive Experiment of Synthesis and Adsorptive Property of Magnetic Peanut Shell Biochar

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