RT Journal Article
T1 Experimental data and model prediction of tetracycline adsorption and desorption in agricultural soils
A1 Conde Cid, Manuel
A1 Fernández Calviño, David
A1 Nóvoa Muñoz, Juan Carlos
A1 Núñez Delgado, Avelino
A1 Fernández Sanjurjo, María José
A1 Arias Estévez, Manuel
A1 Álvarez Rodríguez, Esperanza
K1 2511 Ciencias del Suelo (Edafología)
AB In this work, tetracycline (TC) adsorption and desorption were studied, and the soil properties that most influenced the process were identified. Batch experiments were carried out on 63 crop soil samples, which showed a wide range of values in their physicochemical characteristics. Adsorption curves fit well to the Freundlich equation, with KF values varying between 901 and 9202 Ln μmol1−n kg−1. Kd values ranged between 53 and 6899 L kg−1 for an initial concentration (Co) of 400 μM, whereas the adsorption capacity (qa) ranged from 8541 to 14,852 μmol kg−1. TC retention on soils was high, with adsorption values always higher than 58%, and desorption values lower than 9%. Bivariate correlations and multiple linear regressions were performed to identify those soil variables having a greater influence on TC adsorption and desorption. The results indicate that organic carbon, clay, exchangeable aluminum, available phosphorus, effective cation exchange capacity content, and pH are the main characteristics affecting TC adsorption and desorption. The models, developed by means of multiple linear regression, gave satisfactory and robust predictions for TC adsorption and desorption, using easily determinable soil characteristics as input.
PB Environmental Research
SN 00139351
YR 2019
FD 2019-10
LK http://hdl.handle.net/11093/6947
UL http://hdl.handle.net/11093/6947
LA eng
NO Environmental Research, 177, 108607 (2019)
NO Ministerio de Economía y Competitividad | Ref. CGL2015-67333-C2-1-R
DS Investigo
RD 15-ene-2025