杨木生物炭对水溶液中3种磺胺类抗生素的混合吸附

周俊; 李燕; 管益东; 黄利东; 靳红梅; 肖琼; 宋江生

doi:10.13205/j.hjgc.202103001

杨木生物炭对水溶液中3种磺胺类抗生素的混合吸附

doi: 10.13205/j.hjgc.202103001

周俊¹,
李燕¹,
管益东^1,2, ,,
黄利东³,
靳红梅⁴,
肖琼¹,
宋江生¹

1. 南京信息工程大学环境科学与工程学院大气环境与装备技术协同创新中心江苏省大气环境监测与污染控制高技术研究重点实验室, 南京 210044;
2. 浙江大学环境与资源学院污染环境修复与生态健康教育部重点实验室, 杭州 310058;
3. 南京信息工程大学应用气象学院, 南京 210044;
4. 江苏省农业科学院循环农业研究中心, 南京 210014

基金项目:

中央高校基本科研业务费专项资金（2019FZJD007）；2019年江苏省研究生实践创新计划（SJCX19_0302）。

详细信息

作者简介:
周俊(1995-),硕士,主要研究方向为环境中抗生素的去除技术。

通讯作者:
管益东(1973-),副教授,博士,主要研究方向为固体废物处理及污水处理技术。yidongguan@163.com

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出版历程
- 收稿日期: 2020-04-20
- 网络出版日期: 2021-07-19

MIXED SORPTION OF THREE AQUEOUS SULFONAMIDES ONTO THE BIOCHAR DERIVED FROM POPLAR WOOD CHIPS

1. Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;
2. Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China;
3. College of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China;
4. Circular Agriculture Research Center, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China

摘要

摘要: 利用杨树木屑在限氧条件下，制备出3种不同热解温度下的生物炭，以探究其对水溶液混合磺胺类药物（SAs）的吸附机制。结果表明：350 ℃烧制的生物炭（BC350）孔径以大孔为主，而500 ℃（BC500）与650℃（BC650）以介孔为主；生物炭表面芳香性随着热解温度提高而增强。伪二级模型较适合描述生物炭吸附SAs的动力学过程；Freundlich等温模型对杨木生物炭拟合度较好；杨木生物炭具有较大的SAs吸附容量，BC650的SAs吸附容量为秸秆类生物炭的2.6~104倍。吸附热力学计算表明，杨木生物炭对磺胺吸附兼有物理吸附与化学吸附，以化学吸附为主。根据不同pH值条件下3种SAs的分子形态，得出3种SAs的竞争吸附能力依次为SPD>SMZ>SDZ。
- 生物炭 /
- 磺胺类药物 /
- 吸附 /
- 热力学
Abstract: Discharge of sulfonamides (SAs) poses seriously potential ecological risk on the aquatic environment. In this paper, the biochar derived from poplar wood chips (PWCs) was produced under three pyrolysis temperatures to investigate the sorption mechanism of SAs in the aqueous solution. The experiment result showed that the pore channel of BC350 and BC500-BC650 was dominated by the macropores and mesopores, respectively. The increase of pyrolysis temperature enhanced the polycyclic aromatic surface of the biochars. The pseudo-secondary-order kinetic model and the Freundlich model could be applied to describe the kinetics and isothermal process of biochar sorption, respectively. The maximum sorption capacity of SAs of BC650 was about 2.6 to 104 times on herb-residue biochars. Based on the calculation of thermodynamics, the sorption of PWC involved the physical and chemical sorption simultaneously, but dominated by chemical sorption. The sorption affinity of three SAs was in the descending order of SPD>SMZ>SDZ, thanked to the support from their molecular morphology analysis.
- biochar /
- sulfonamide /
- sorption /
- thermodynamics

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