RT info:eu-repo/semantics/article
T1 Removal of a mixture of veterinary medicinal products by adsorption onto a Scenedesmus almeriensis microalgae-bacteria consortium
A1 Zambrano Flores, Johanna Vanessa
A1 García Encina, Pedro Antonio
A1 Hernández, Félix
A1 Botero Coy, Ana M.
A1 Jiménez Sevilla, Juan José
A1 Irusta Mata, Rubén
K1 Química
K1 Microalgas
K1 Adsorción
K1 Contaminantes
K1 Adsorption isotherms
K1 Kinetic of adsorption
K1 Antibiotics
K1 Microalgae
K1 23 Química
K1 33 Ciencias Tecnológicas
AB The adsorption of the veterinary medicinal products (VMP) tetracycline (TET), ciprofloxacin (CIP), sulfadiazine (SDZ) and sulfamethoxazole (SMX) onto a dried Scenedesmus almeriensis microalgae-bacteria consortium was studied at several equilibrium concentrations (20 to 1000 μg/L). Scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR) analysis were performed to investigate the surface morphology of the microalgae and to identify the effect of the antibiotics 'functional groups on the surface of the consortium of S. almeriensis and bacteria. Ultra-high performance liquid chromatography tandem mass spectrometry (UHPLCMS/MS) was used to determine the feasibility of this consortium for the removal of antibiotics via biosorption. Freundlich and Langmuir adsorption models were used for the mathematical description of the adsorption equilibrium. Pseudo-first order and pseudo-second order kinetic models were applied to fit the biosorption experimental data. Relative antibiotic removal was higher at low equilibrium concentrations. In the range of the initial VMP concentration studied, ciprofloxacin and tetracycline exhibited the highest removal efficiency of43–100% and 75–82%, respectively. Likewise, ciprofloxacin and tetraciclyne presented the highest adsorption rates of 0.11–26.66 and 1.78–27.09 mg⋅μg-1⋅h-1, respectively. This study revealed that the S. almeriensis-bacteria consortium has a high biosorption power and proved that biosorption is an important mechanism in the removal of ciprofloxacin and tetraciclyne using a microalgae-based water treatment process. However, sulfadiazine and sulfamethoxazole removals did not exceed 32%.
PB Elsevier
SN 2214-7144
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/65577
UL https://uvadoc.uva.es/handle/10324/65577
LA eng
NO Journal of Water Process Engineering, 2021, vol. 43, 102226
NO Producción Científica
DS UVaDOC
RD 07-ago-2024