An achieved strategy for magnetic biochar for removal of tetracyclines and fluoroquinolones: Adsorption and mechanism studies

IF 9.7 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology Pub Date : 2023-02-01 DOI:10.1016/j.biortech.2022.128440

Xianzhao Zhang , Dawei Zhen , Fengmao Liu , Rui Chen , Qingrong Peng , Zongyi Wang

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引用次数: 0

Abstract

In this study, poplar wood biochar modified with Fe₃O₄ (MPBC) was prepared using poplar wood as carbon source applied to remove tetracyclines and fluoroquinolones. The adsorption behavior was investigated by batch experiments, and a series of characterization techniques were used to study the corresponding mechanism. Characterizations indicated that pore filling, electrostatic interactions, π-π interaction, surface complexation, and hydrogen bond contributed to the adsorption of antibiotics on MPBC. Most importantly, the thermodynamic experiment results showed that the adsorption capacity of MPBC for tetracyclines (70.28–89.58 mg⋅g⁻¹) was significantly higher than fluoroquinolones (35.54–60.31 mg⋅g⁻¹), which was further explained by hydrogen bond interactions calculated from Conductor-like screening model for real solvents (COSMO-RS). In addition, the adsorption between MPBC and antibiotics was favorable at lower ionic strengths and neutral conditions. Conclusively, this study could provide a promising approach to controlling the pollution of tetracyclines and fluoroquinolones.

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磁性生物炭去除四环素类和氟喹诺酮类药物的一种已实现的策略:吸附和机理研究

本研究以杨木为碳源，制备了Fe3O4改性杨木生物炭(MPBC)，用于去除四环素类和氟喹诺酮类药物。通过批量实验研究了其吸附行为，并采用一系列表征技术研究了其吸附机理。表征表明，孔填充、静电相互作用、π-π相互作用、表面络合和氢键对抗生素在MPBC上的吸附有重要作用。最重要的是，热力学实验结果表明，MPBC对四环素类药物(70.28-89.58 mg⋅g−1)的吸附量显著高于氟喹诺酮类药物(35.54-60.31 mg⋅g−1)，这进一步解释了基于真实溶剂类导体筛选模型(cosmos - rs)计算的氢键相互作用。此外，在低离子强度和中性条件下，MPBC与抗生素之间的吸附是有利的。本研究为控制四环素类和氟喹诺酮类药物的污染提供了一条有希望的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bioresource Technology 工程技术-能源与燃料

CiteScore

20.80

自引率

19.30%

发文量

2013

审稿时长

12 days

期刊介绍： Bioresource Technology publishes original articles, review articles, case studies, and short communications covering the fundamentals, applications, and management of bioresource technology. The journal seeks to advance and disseminate knowledge across various areas related to biomass, biological waste treatment, bioenergy, biotransformations, bioresource systems analysis, and associated conversion or production technologies. Topics include: • Biofuels: liquid and gaseous biofuels production, modeling and economics • Bioprocesses and bioproducts: biocatalysis and fermentations • Biomass and feedstocks utilization: bioconversion of agro-industrial residues • Environmental protection: biological waste treatment • Thermochemical conversion of biomass: combustion, pyrolysis, gasification, catalysis.