RT Journal Article
T1 Preparation of synthetic clays to remove phosphates and ibuprofen in water
A1 Devesa Rey, Rosa
A1 Del Val Garcia, Jesús
A1 Feijoo Conde, Jorge
A1 González Coma, José P.
A1 Castiñeira, Gonzalo
A1 González Gil, Lorena
K1 3303.11 Química Industrial
K1 3308.07 Eliminación de Residuos
K1 3308.06 Regeneración del Agua
AB The main objective of this study consists in the synthesis of a layered double hydroxide (LDH) clay doped with magnesium and aluminum in order to test the removal of phosphates and ibuprofen in water. Two different LDH composites are assessed: oven-dried (LDHD) and calcined (LDHC). Single adsorptions of phosphate and ibuprofen showed up to 70% and 58% removal in water, when LDHC was used. A poorer performance was observed for LDHD, which presented adsorption efficiencies of 52% and 35%, respectively. The simultaneous removal of phosphate and ibuprofen in water showed that LDHC allows a greater reduction in the concentration of both compounds than LDHD. Phosphate adsorption showed a close agreement between the experimental and theoretical capacities predicted by the pseudo-second-order model, whereas ibuprofen fitted to a first-order model. In addition, phosphate adsorption showed a good fit to an intraparticle diffusion model and to Bangham model suggesting that diffusion into pores controls the adsorption process. No other mechanisms may be involved in ibuprofen adsorption, apart from intraparticle diffusion. Finally, phosphate desorption could recover up to 59% of the initial concentration, showing the feasibility of the recuperation of this compound in the LDH.
PB Water
SN 20734441
YR 2021
FD 2021-08-30
LK http://hdl.handle.net/11093/2482
UL http://hdl.handle.net/11093/2482
LA eng
NO Water, 13(17): 2394 (2021)
NO Defense University Center at the Spanish Naval Academy | Ref. Project PICUD-2020-03
DS Investigo
RD 04-dic-2023