RT Journal Article
T1 Comparison of by-products as adsorbents for the removal of the antibiotics ciprofloxacin, trimethoprim and clarithromycin
A1 Rodríguez López, Lucía
A1 Santás Miguel, Vanesa
A1 Cela Dablanca, Raquel
A1 Núñez Delgado, Avelino
A1 Álvarez Rodríguez, Esperanza
A1 Rodríguez Seijo, Andrés
A1 Arias Estévez, Manuel
K1 2391 Química Ambiental
K1 3199 Otras Especialidades Agrarias
K1 2511.04 Química de Suelos
AB Antibiotics in the environment are considered emerging pollutants, with special relevance and concern due to the proliferation of antibiotic-resistant bacteria and genes. Therefore, finding ways to remediate antibiotics-contaminated soil and water through the use of bio-adsorbents is imperative. In this research, we investigate three by-products (hemp waste, oak ash, and mussel shell) as potential low-cost bio-adsorbents for the antibiotics Ciprofloxacin (CIP), Clarithromycin (CLA), and Trimethoprim (TRI), using batch-type and stirred flow chamber experiments to study their retention and release. The results indicate that hemp waste has higher sorption capacity for CIP and TRI (20891.8 and 2481.6 μmol L−1, respectively), while oak ash yields the highest retention for CLA (3078.4 μmol L−1). In addition, it was shown that the pH value significantly influences the sorption of these pollutants onto hemp waste. Among the three antibiotics, CLA was the most mobile, given the release experiments (903.9–1758.9 μmol kg−1), while ciprofloxacin (440.3–542.4 μmol kg−1) and trimethoprim (639.4–1652.1 μmol kg−1) are released less. Overall, the results of this research (the first of this kind including these antibiotics and sorbents simultaneously) suggest that while the individual antibiotics retention on each of the three by-products may not be entirely satisfactory, its potential combination (among them and/or with other low-cost sorbents) could significantly contribute to addressing antibiotics environmental pollution, favouring recycling and promoting a circular economy, which is a matter of global relevance.
PB Journal of Environmental Management
SN 03014797
YR 2024
FD 2024-11
LK http://hdl.handle.net/11093/7666
UL http://hdl.handle.net/11093/7666
LA eng
NO Journal of Environmental Management, 370, 122842 (2024)
NO Agencia Estatal de Investigación | Ref. RTI2018-099574-B-C21
DS Investigo
RD 21-ene-2025