Ultrafast and energy-efficient flowthrough capture of antibiotics through a reusable MOF@wood membrane adsorbent

Abstract

The accumulation of antibiotics in aquatic environments poses escalating risks to both ecosystems and human health. However, current water remediation strategies are hampered by numerous limitations, especially in operating costs and processing efficiency. Herein, the MIL-100(Fe)@wood membrane with high metal-organic frameworks (MOFs) loading is prepared by a simple flow-based fabrication technique. The presented integrated water purification system comprising membrane preparation, antibiotic removal and membrane regeneration allows for the sequential and continuous execution of the individual processes, thereby improving the sustainability, time efficiency and energy efficiency of the system. The highly efficient and flowthrough capturing membranes (MIL-100(Fe)@wood) are reported to remove numerous common antibiotics from water: tetracycline (TC), ciprofloxacin (CIP), amoxicillin (AMX), roxithromycin (RXM), and sulfamethazine (SMT). The stability and excellent long-term performance under different pH environmental conditions of MIL-100(Fe)@wood are demonstrated. Furthermore, the removal mechanisms of the multimolecular interactions occurring between antibiotic and MIL-100(Fe)@wood have also been explored. The unique advantage of MIL-100(Fe)@wood is employed in sustainable, cost-effective, and facile strategies for the removal of antibiotics.