RT Journal Article
T1 Removal of cefuroxime from soils amended with pine bark, mussel shell and oak ash
A1 Cela Dablanca, Raquel
A1 Míguez González, Ainoa
A1 Rodríguez López, Lucía
A1 Barreiro Buján, Ana
A1 Arias Estévez, Manuel
A1 Fernández Sanjurjo, María J.
A1 Álvarez Rodríguez, Esperanza
A1 Núñez Delgado, Avelino
K1 Adsorption
K1 Antibiotics
K1 Byproducts
K1 Desorption
K1 Soil
AB The global increase in antibiotics consumption has caused hazardous concentrations of these antimicrobials to be present in soils, mainly due to the spreading of sewage sludge (or manure or slurry) and wastewater, and they could enter the food chain, posing serious risks to the environment and human health. One of these substances of concern is cefuroxime (CFX). To face antibiotics-related environmental pollution, adsorption is one of the most widely used techniques, with cost-effective and environmentally friendly byproducts being of clear interest to retain pollutants and increase the adsorption capacity of soils. In light of this, in this work, three low-cost bioadsorbents (pine bark, oak ash, and mussel shell) were added to different soil samples (at doses of 12 and 48 t/ha) to study their effects on the adsorption of CFX. Specifically, batch experiments were carried out for mixtures of soils and bioadsorbents, adding a range of different antibiotic concentrations at a fixed ionic strength. The results showed that the addition of pine bark (with pH = 3.99) increased the adsorption to 100% in most cases, while oak ash (pH = 11.31) and mussel shell (pH = 9.39) caused a clearly lower increase in adsorption (which, in some cases, even decreased). The Freundlich and linear models showed rather good adjustment to the experimental data when the bioadsorbents were added at both doses, while the Langmuir model showed error values which were too high in many cases. Regarding desorption, it was lower than 6% for the soils without bioadsorbents, and there was no desorption when the soils received bioadsorbent amendments. These results show that the addition of appropriate low-cost bioadsorbents to soils can be effective for adsorbing CFX, helping in the prevention of environmental pollution due to this emerging contaminant, which is a result of clear relevance to environmental and human health.
PB MDPI
SN 2227-9717
YR 2024
FD 2024
LK https://hdl.handle.net/10347/38501
UL https://hdl.handle.net/10347/38501
LA eng
NO Cela-Dablanca, R., Míguez-González, A., Rodríguez-López, L., Barreiro, A., Arias-Estévez, M., Fernández-Sanjurjo, M. J., Álvarez-Rodríguez, E., & Núñez-Delgado, A. (2024). Removal of Cefuroxime from Soils Amended with Pine Bark, Mussel Shell and Oak Ash. Processes, 12(7), 13-16. https://doi.org/10.3390/pr12071335
NO This research was funded by the Spanish “Agencia Estatal de Investigación” (State Investigation Agency) (grant number PID2021-122920OB-C21). Cela-Dablanca R. received a predoctoral grant from Campus Terra (University of Santiago de Compostela).
DS Minerva
RD 24 abr 2026