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Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis
Published on: February 12, 2019
Magnetic biochar derived from penicillin fermentation residue for efficient penicillin G sodium adsorption: kinetics,
Sinan Zhang1, Zejian Wang2, Sheng Huang3
1Engineering Research Center of Resource Utilization of Carbon-containing Waste with Carbon Neutrality, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China; State Key Laboratory of Coal Liquification, Gasification and Utilization with High Efficiency and Low Carbon Technology, East China University of Science and Technology, Shanghai 200237, China; Department of Biotechnology, State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China.
Abstract:
The escalating environmental contamination from penicillin G sodium (PGNa) misuse poses significant threats to ecosystem integrity and public health, necessitating advanced remediation strategies. In this study, porous magnetic biochar (SAMB) was derived from penicillin fermentation residues through coupled covalent precipitation and acid-alkali modification (98.3 % PGNa removal within 2 h). Mechanistic investigations combining density functional theory and liquid chromatography-mass spectrometry revealed that PGNa was degraded by β-lactam ring cleavage followed by decarboxylation, decarbonylation, demethylation, and deamidation. Regeneration experiments showed that SAMB still maintained 33.8 % PGNa removal efficiency after five cycles. In addition, ecotoxicological assessment using the ECOlogical Structure Activity Relationship predictive model confirmed substantially reduced aquatic toxicity of resultant intermediates. Conversion of penicillin residue into magnetic biochar SAMB simultaneously achieves waste resource utilization and effective PGNa removal, providing dual environmental benefits for antibiotic pollution control and circular economy practices.
