RT Journal Article
T1 Removal of the ionophore antibiotic narasin using vegetal materials as bioadsorbents
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 Álvarez Rodríguez, Esperanza
A1 Núñez Delgado, Avelino
AB The occurrence of ionophore antibiotics, particularly narasin (NAR), in the environment, has recently become a matter of concern because of their widespread use, high eco-toxicity, and environmental persistence. This study assessed the adsorption–desorption characteristics of NAR onto a variety of low-cost by-products using batch-type experiments. Fourier transform infrared (FTIR) spectroscopy was performed on all samples, whereas solid-state 13C CP/MAS NMR analyses were undertaken on the six most effective adsorbents as well as on the three least efficient ones. The results show that, at low concentrations of antibiotic added (5–10 µmol L−1), adsorption remained low, not exceeding 25.33%. At the three lowest concentrations (5–20 µmol L−1), alfa, palm, and cactus fibers, as well as calcined coffee grounds exhibited adsorption rates always ≥65.12%. At concentrations ≥20 µmol L−1, adsorption increased in bioadsorbents with higher organic matter content, reaching up to 100% for eucalyptus bark at 100 µmol L−1. Adsorption data were adjusted to different models, with Freundlich presenting the best fit. No desorption was observed at low concentrations for most bioadsorbents, except for cactus and Mediterranean tapeweed fibers, as well as for raw and calcined coffee grounds, while it increased with higher concentrations (above 20 µmol L−1), but generally remained below 10%, except for calcined coffee grounds and cactus fiber, where it reached 10.48% and 14.64%, respectively, at 100 µmol L−1 of NAR added. All these results indicate that NAR is strongly retained on the tested bioadsorbents, suggesting that the ecological risks associated with this pollutant can be mitigated using these bioadsorbents
PB Royal Society of Chemistry
YR 2026
FD 2026-01-21
LK https://hdl.handle.net/10347/46195
UL https://hdl.handle.net/10347/46195
LA eng
NO Hamdi, S. et al. (2026) ‘Removal of the ionophore antibiotic narasin using vegetal materials as bioadsorbents’, RSC Advances, 16, pp. 4723–4739. doi:10.1039/d5ra09276k
DS Minerva
RD 8 jun 2026