RT Journal Article
T1 Continuous adsorption studies of pharmaceuticals in multicomponent mixtures by agroforestry biochar
A1 Puga Pazo, Antón
A1 Moreira, Manuela M.
A1 Pazos Currás, Marta María
A1 Figueiredo, Sónia A.
A1 Sanromán Braga, María Ángeles
A1 Delerue Matos, Cristina
A1 Rosales Villanueva, Emilio
K1 3308.11 Control de la Contaminación del Agua
K1 3308.06 Regeneración del Agua
AB In this study, the adsorption of a multicomponent mixture of active pharmaceutical compounds, such as Venlafaxine (VLX), Trazodone (TRZ) and Fluoxetine (FLX), was studied in a biochar fixed-bed column. The selection of appropriate biochar (eucalyptus, grapevine cane and holm tree biochar) as an adsorbent was carried out through batch assays. An insight into the adsorption mechanism and its correlation with the chosen biochars was performed, showing that electron donor/acceptor interaction is the main mechanism involved. Equilibrium and kinetic batch adsorption experiments were performed and the results demonstrated that eucalyptus biochar was the most viable option for the removal of the pollutants, individually and combined. Column adsorption experiments were performed and Thomas, Yoon-Nelson and Yan models were adjusted to the breakthrough curves. This multicomponent system exhibited a synergetic behavior for TRZ and an antagonist for VLX and FLX, when compared to the single and multicomponent systems previously evaluated in batch assays. The treatment of real wastewaters, spiked with pollutants, has demonstrated the removal efficiency of  multicomponent mixtures. Finally, the adsorbent regeneration by elution in different solutions was also investigated and methanol proved to be the most effective eluent for the column regeneration.
PB Journal of Environmental Chemical Engineering
SN 22133437
YR 2022
FD 2022-02
LK http://hdl.handle.net/11093/3121
UL http://hdl.handle.net/11093/3121
LA eng
NO Journal of Environmental Chemical Engineering, 10(1): 106977 (2022)
NO Financiado para publicación en acceso aberto: Universidade de Vigo/CISUG
NO Agencia Estatal de Investigación | Ref. CTM2017-87326-R
DS Investigo
RD 04-dic-2023