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Updated: Jan 30, 2026

Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
Published on: August 10, 2016
Highly efficient removal of ceftiofur sodium using a superior hydroxyl group functionalized ionic liquid-modified
Meng Cheng1, Xiaodi Zhang2, Yueyue Shi2
1School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China; School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046, PR China.
A novel polymer adsorbent, PS-[Hemim][Cl], efficiently removes ceftiofur sodium (CFS) antibiotic from water. This material demonstrates a high adsorption capacity and effectiveness across a broad range of concentrations and challenging conditions.
Area of Science:
- Environmental Chemistry
- Materials Science
- Polymer Chemistry
Background:
- Cephalosporin antibiotics in water pose risks to ecosystems and human health.
- Efficient methods for removing these contaminants are scarce.
- Ceftiofur sodium (CFS) is a common veterinary antibiotic.
Purpose of the Study:
- To develop a highly efficient adsorbent for CFS removal.
- To investigate the adsorption performance of a hydroxyl-functionalized ionic liquid based polymer (PS-[Hemim][Cl]).
- To explore the influence of various factors on CFS adsorption.
Main Methods:
- Synthesis of PS-[Hemim][Cl] polymer.
- Batch adsorption experiments to determine adsorption capacity and efficiency.
- Investigation of factors like concentration, co-existing ions, and contact time.
- Comparison with existing commercial adsorbents.
- Wastewater treatment application tests.
Main Results:
- PS-[Hemim][Cl] achieved a super-high adsorption capacity of 1260.5 mg/g for CFS within 60 minutes.
- High removal efficiency was maintained across a wide CFS concentration range (5 ppb to 1000 mg/L).
- Adsorption remained effective (>93%) even with 1000x higher inorganic ion concentrations.
- Significantly outperformed commercial adsorbents (4-468 times higher capacity).
Conclusions:
- PS-[Hemim][Cl] is a superior adsorbent for CFS removal from aqueous solutions.
- The adsorbent shows excellent performance in real wastewater samples.
- Electrostatic attraction, hydrogen bonding, and ion exchange are key mechanisms for adsorption.
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