RT Journal Article
T1 Experimental data and modeling for sulfachloropyridazine and sulfamethazine adsorption/desorption on agricultural acid soils
A1 Conde Cid, Manuel
A1 Nóvoa Muñoz, Juan Carlos
A1 Núñez Delgado, Avelino
A1 Fernández Sanjurjo, María J.
A1 Arias Estévez, Manuel
A1 Álvarez Rodríguez, Esperanza
K1 Adsorption/desorption
K1 Antibiotics
K1 Crop soils
K1 Regression models
K1 Sulfonamides
AB Taking into account that certain soil components could retain sulfonamides, in this work 50 crop soils (as porous materials) were studied as regards their adsorption/desorption characteristics for two sulfonamide antibiotics, specifically sulfamethazine (SMT) and sulfachloropyridazine (SCP), using batch-type experiments. Both adsorption and desorption curves fitted well to the Linear and Freundlich equations. Adsorption parameters showed low values for both antibiotics, indicating that a high mobility can be expected for these compounds in soils. In addition, adsorption parameters were lower for SMT than for SCP, due to their different degree of hydrophobicity. Soil organic carbon (OC) content was the soil characteristic showing the highest influence on adsorption and desorption processes for both sulfonamides. In fact, those soils having the highest OC content were the ones presenting the highest adsorption and the lowest desorption results. As next step, multiple linear regression analyses were carried out, which were used to develop robust model functions to predict the values of adsorption and desorption parameters for SCP and SMT. Input variables used to feed models were easily determinable soil characteristics, such as OC, cation exchange capacity, and pH. These models could facilitate a rapid and low-cost screening to find vulnerable soils, which will be those with the lowest values for the adsorption parameters. Having that information derived from simulations, an appropriate management could be programmed for most vulnerable soils, to minimize the entry of pollutants in different environmental compartments and, finally, into the food chain, thus reducing risks and impacts on human and environmental health.
PB Elsevier
YR 2019
FD 2019
LK https://hdl.handle.net/10347/38649
UL https://hdl.handle.net/10347/38649
LA eng
NO Conde-Cid, M., Nóvoa-Muñoz, J. C., Núñez-Delgado, A., Fernández-Sanjurjo, M. J., Arias-Estévez, M., & Álvarez-Rodríguez, E. (2019). Experimental data and modeling for sulfachloropyridazine and sulfamethazine adsorption/desorption on agricultural acid soils. Microporous and Mesoporous Materials, 288, 1-10. https://doi.org/10.1016/j.micromeso.2019.109601
NO This is the author’s version of the work. The definitive version was published in Microporous and mesoporous materials, vol. 288 (2019), available online at: https://doi.org/10.1016/j.micromeso.2019.109601
NO This work was supported by the Spanish Ministry of Economy and Competitiveness [grant numbers CGL2015-67333-C2-1-R and CGL2015-67333-C2-2-R]. It also received funds from the European Regional Development Fund (FEDER in Spain), being a complement to the previous grants, without additional grant number. M. Conde-Cid holds a pre-doctoral contract (FPU15/0280, Spanish Government). The sponsors had not involvement in study design; in the collection, analysis and interpretation of data; in the writing of the report, and in the decision to submit the article for publication.
DS Minerva
RD 24 abr 2026