RT info:eu-repo/semantics/article
T1 Kinetics of the removal mechanisms of veterinary antibiotics in synthetic wastewater using microalgae–bacteria consortia
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 Biodegradation
K1 Biosorption
K1 Hydrolysis
K1 Photolysis
K1 Microalgae
K1 24 Ciencias de la Vida
K1 3308 Ingeniería y Tecnología del Medio Ambiente
AB The mechanisms involved in the removal of a mixture of four veterinary antibiotics(VA) – tetracycline (TTC), ciprofloxacin (CPF), sulfadiazine (SDZ) and sulfamethoxazole(SMX) – in synthetic wastewater using microalgae–bacteria consortia (MBC) dominatedby Scenedesmus almeriensis was studied at different initial concentrations of 1000, 500,100 and 20 μg/L per antibiotic. Ultra-high performance liquid chromatography andtandem mass spectrometry (UHPLC-MS/MS) were used to determine the removal of theVA for each mechanism. For a hydraulic retention time of 4 days, the overall removal ofantibiotics by the MBC was 99.9% for TTC, 78.0% for CPF, 52.6% for SDZ and 5.0% for SMX.A pseudo-first order irreversible model was applied to best fit the experimental data. Thedegradation constant rates were 0.136 h−1 for TTC, 0.012 h−1 for CPF, 0.010 h−1 for SDZand 0.0007 h−1 for SMX. Under all the evaluated conditions, CPF and TTC exhibited thehighest removal efficiency. Biosorption was the main mechanism for all four antibiotics,followed by biodegradation in the cases of TTC and SDZ. CPF did not show removal viabiodegradation. SMX did not show removal via hydrolysis or photolysis. This study (i)integrates and evaluates individually the mechanisms involved in VA removal using anMBC; (ii) determines an overall removal rate constant for a wide array of TTC, CPF, SDZand SMX concentrations; and (iii) demonstrates the high removal capacity and potentialuse of microalgae as an ecofriendly wastewater treatment process.
PB Elsevier
SN 2352-1864
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/58519
UL https://uvadoc.uva.es/handle/10324/58519
LA eng
NO Environmental Technology & Innovation, 2023, vol. 29, p. 103031.
NO Producción Científica
DS UVaDOC
RD 23-may-2024