Removal of fluconazole from aqueous solution by magnetic biochar treated by ball milling: Adsorption performance and mechanism

Zhexi HUANG, Yunqiang YI, Nuanqin ZHANG, Po Keung Eric TSANG, Zhanqiang FANG

Research output: Contribution to journalArticlespeer-review

Abstract

The problem of low adsorption capacity of pristine magnetic biochar for organic pollutants always occurs. It is of great significance to select a suitable method to improve the adsorption performance of magnetic biochar. In this study, magnetic biochar was treated by ball milling and tested for its fluconazole adsorption capacity. The maximum adsorption capacity of ball-milled magnetic biochar (BMBC) for fluconazole reached nearly 15.90 mg/g, which was approximately five times higher than that of pristine magnetic biochar (MBC). Fluconazole adsorption by BMBC was mainly attributed to π–π interactions, hydrogen bonding, and surface complexation with oxygen-containing functional groups. The enhancement in fluconazole adsorption by BMBC was attributed to an increase in oxygen-containing functional groups. Batch adsorption experiments also illustrated that BMBC could be successfully applied in a wide range of pH values. The high efficiency of fluconazole removal confirmed that ball milling was an effective strategy to enhance the adsorptive performance of magnetic biochar. Copyright © 2021 The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

Original languageEnglish
Pages (from-to)33335–33344
JournalEnvironmental Science and Pollution Research
Volume29
Issue number22
Early online dateJan 2022
DOIs
Publication statusPublished - May 2022

Citation

Huang, Z., Yi, Y., Zhang, N., Tsang, P. E., & Fang, Z. (2022). Removal of fluconazole from aqueous solution by magnetic biochar treated by ball milling: Adsorption performance and mechanism. Environmental Science and Pollution Research, 19(22), 33335–33344. doi: 10.1007/s11356-021-17964-8

Keywords

  • Magnetic biochar
  • Ball milling
  • Fluconazole
  • Adsorption mechanism
  • Oxygen-containing functional groups

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