生物炭的制备温度及酸处理对卡马西平的吸附动力学影响

环境化学 , 2016, 35(7): 1461-1467. doi: 10.7524/j.issn.0254-6108.2016.07.2015112401

生物炭的制备温度及酸处理对卡马西平的吸附动力学影响

陈建 ^1, , 王朋 ^2, , 曹艳贝 ^3, , 郭秉林 ^4, , 张迪 ^5,

1.昆明理工大学,环境科学与工程学院,昆明,650500

2.昆明理工大学,环境科学与工程学院,昆明,650500

3.昆明理工大学,环境科学与工程学院,昆明,650500

4.昆明理工大学,环境科学与工程学院,昆明,650500

5.昆明理工大学,环境科学与工程学院,昆明,650500

基金项目: 国家自然科学基金(41303093),云南省自然科学基金(2014FB121),昆明理工大学人才启动经费(14118762),昆明理工大学课外学术科技创新基金(2015BA082)资助 Supported by the National Scientific Foundation of China (41303093),Scientific Foundation of Yunnan Province (2014FB121) and Scientific Foundation of Kunming University of Science and Technology (14118762),Extracurricular Scientific Innovation Foundation of Kunming University of Science and Technology(2015BA082).

关键词：卡马西平 , 生物炭 , 裂解温度 , 矿物 , 双室一级模型

Impact of pyrolytic temperature and acid wash on adsorption kinetics of carbamazepine on biochar

Keywords： carbamazepine , biochar , pyrolytic temperature , mineral , two-compartment first order model

本研究考察了卡马西平(CRZ)在9种不同条件(裂解温度200、300、500℃,无酸,HCI和HCI-HF)处理的生物炭上的吸附动力学,分别应用拟一级、拟二级和双室一级3种动力学模型对实验数据进行拟合.研究结果表明,双室一级动力学模型对吸附动力学提供了更精确的描述.裂解温度和酸处理对CBZ的吸附动力学有显著影响,具体表现为不同酸洗导致矿物含量发生显著变化,矿物对生物炭吸附CBZ的快室吸附单元起主要作用,生物炭内部的芳香环随生物炭的升高而更加致密,生物炭内部的芳香环结构主要贡献于慢室吸附单元.生物炭的矿物组分一方面屏蔽了有机质上的一些吸附点位,另一方面矿物自身可以有效地吸附污染物,酸洗去矿物对生物炭吸附污染物的表观影响可能取决于两个方面的平衡.

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