高铁酸钾改性酒糟生物炭对诺氟沙星的吸附性能研究

doi:10.11896/cldb.24010137

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Abstract In this work, a kind of magnetic porous biochar adsorbent material (FIC-700) was prepared from vinasse via a sequential process of dipping by potassium ferrate and carbonization in N₂ atmosphere to increase the removal efficiency of the residual norfloxacin (NOR) which is ha-zardous to human health and the aqueous eco-system from wastewater bodies. The physical and chemical properties of biochar were investigated by SEM, BET, FTIR, XPS, VSM, etc. Test results showed that the pore structure and surface polarity of the biochar could be effectively improved by the treatment of potassium ferrate, with the maximum theoretical adsorption capacity of NOR up to 418.0 mg/g. It was also endowed with strong magnetic properties, making it easy to recycle. After three cycles of reuse, it still maintained over 75% of its original adsorption capacity, demonstrating excellent reusability. The adsorption process conformed to the pseudo-first-order kinetic model and Langmuir isothermal adsorption model. The main adsorption mechanisms were pore filling, hydrogen bonding, π-π electron donor-acceptor interaction and surface comple-xation. Accordingly, such magnetic porous biochar material obtained from vinasse activated by potassium ferrate and carbonized at an appropriate temperature is supposed to be a kind of potential ideal adsorbent material for effective removal of residual NOR from wastewater.

Key words： potassium ferrate biochar vinasse norfloxacin (NOR) adsorption

Published: 25 February 2025 Online: 2025-02-18

CLC number:	TB34
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	BAO Zhichao
	ZHOU Xuesong

Cite this article:

BAO Zhichao,ZHOU Xuesong. Modification of Vinasse Biochar by Potassium Ferrate for Norfloxacin Adsorption[J]. Materials Reports, 2025, 39(4): 24010137-8.

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https://www.mater-rep.com/EN/10.11896/cldb.24010137 OR https://www.mater-rep.com/EN/Y2025/V39/I4/24010137

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