RT Journal Article
T1 Agro-waste materials: A low-cost approach to ionophore antibiotics mitigation in aquatic environment
A1 Hamdi, Samiha
A1 Issaoui, Manel
A1 Míguez González, Ainoa
A1 Cela Dablanca, Raquel
A1 Hammami, Sonia
A1 Barreiro Buján, Ana
A1 Fernández Sanjurjo, María J.
A1 Núñez Delgado, Avelino
A1 Álvarez Rodríguez, Esperanza
K1 Adsorption-desorption
K1 Bio-adsorbents
K1 Waste management
K1 Ionophore antibiotics
K1 Lasalocid
AB Ionophore antibiotics, such as lasalocid (LAS), have emerged as significant environmental contaminants due to their extensive use, high toxicity, and persistence. This study evaluated the adsorption-desorption behavior of LAS on fourteen low-cost by-products using batch experiments. To elucidate the adsorption mechanisms, Fourier Transform Infrared (FTIR) spectroscopy was applied to all samples, while solid-state 13C CP/MAS NMR was performed on the most effective adsorbents. Results revealed that materials with pH between 4.5 and 5.5 and comparatively elevated exchangeable calcium and sodium contents (such as acacia and eucalyptus bark, palm and alfa fibers, orange peel, almond shells, and date stones) achieved high LAS adsorption efficiencies (≥96.3 %), regardless of initial concentration. Elevated organic matter content (17–68.4 %) in all the investigated by-products promoted LAS retention, with all samples maintaining ≥48.6 %. Freundlich isotherm provided the best prediction for LAS, indicating heterogeneous, multilayer sorption, while the Langmuir model fit less accurately. Desorption remained below 12 % for all materials, with the most effective adsorbents showing <2 %, suggesting quasi-irreversible retention across a wide pH range (3.7–7.4). These findings highlight the potential of using agricultural by-products as cost-effective and sustainable bio-adsorbents for mitigating emerging pollutants like LAS in aquatic environments, thereby reducing ecological and human health risks
PB Elsevier
YR 2025
FD 2025-11-12
LK https://hdl.handle.net/10347/46197
UL https://hdl.handle.net/10347/46197
LA eng
NO Hamdi, S., Issaoui, M., Míguez-González, A., Cela-Dablanca, R., Hammami, S., Barreiro, A., Fernández-Sanjurjo, M. J., Núñez-Delgado, A., & Álvarez-Rodríguez, E. (2025). Agro-waste materials: A low-cost approach to ionophore antibiotics mitigation in aquatic environment. Bioresource Technology Reports, 32, 102412. https://10.1016/j.biteb.2025.102412
NO This work was supported by the Spanish “Agencia Estatal de Investigación” (State Investigation Agency) [grant number PID2021-122920OB-C21] and the Tunisian Ministry of Higher Education and Scientific Research
DS Minerva
RD 22 may 2026