Self-cleaning Mn-Zn ferrite/biochar adsorbents for effective removal of tetracycline

Zhong Ting Hu, Xiao Fang Wang, Shuo Xiang, Yin Ding, Dong Yang Zhao, Mian Hu, Zhiyan Pan, Sunita Varjani, Jonathan Woon Chung Wong, Jun Zhao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A renewable tri-metallic spinel decorated biochar adsorbent (MZF-BC) was fabricated by a facile hydrothermal method and to remove tetracycline. The physicochemical properties of MZF-BC were well studied. MZF-BC with a hybrid pore structure of mesopores (~7.6 nm) and macropores (~50 nm) has the maximum tetracycline adsorption capacity reaching 142.4 mg g−1. Through the study of adsorption kinetics, isotherms and key influencing factors, it was found that MZF-BC adsorption on tetracycline was primarily multi-layer effect with the initial adsorption behavior of pore filling associated with hydrogen bonding and π-π stacking. Furthermore, the MZF-BC performs excellent regeneration ability by driving Fenton-like catalysis as the self-cleaning process in the liquid phase. This study contributes to a new insight into the in-situ regeneration of biochar-based adsorbents after adsorbing organic pollutants in pharmaceutical wastewater treatment.

Original languageEnglish
Article number157202
JournalScience of the Total Environment
Volume844
DOIs
Publication statusPublished - 20 Oct 2022

Scopus Subject Areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution

User-Defined Keywords

  • Biochar regeneration
  • In-situ
  • Pharmaceutical wastewater
  • Spinel

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