RT Journal Article
T1 Evaluation of acetanilide and antipyrine adsorption on lignin-derived activated carbons.
A1 Gutierrez, Maria del Carmen
A1 García-Mateos, Francisco José
A1 Ruiz-Rosas, Ramiro Rafael
A1 Rosas-Martínez, Juana María
A1 Rodríguez-Mirasol, José
A1 Cordero-Alcántara, Tomás
K1 Química
K1 Contaminantes
K1 Acetanilida - Absorción y adsorción
K1 Antipiréticos - Absorción y adsorción
K1 Carbón activado
K1 Lignina
AB In this study, the removal of two emerging pollutants (EPs), antipyrine and acetanilide, through adsorption onactivated carbons (ACs) prepared by chemical activation of Organosolv lignin with H3PO4 were evaluated. ACswith different pore size distribution were obtained at different impregnation ratios (H3PO4/lignin, 0.5–3.0 w/w)and activating temperatures (500–900 ◦C). The porosity and surface chemistry of the ACs were determined, and abimodal size distribution of micropores and narrow mesopores was observed for the different ACs. These ACswere tested for antipyrine and acetanilide adsorption in aqueous solutions in a batch system at 20 ◦C and lowconcentration levels (0.5–10 ppm). In general, the ACs exhibited higher adsorption affinity to acetanilide than toantipyrine due to its smaller molecular size. Langmuir adsorption isotherm was able to describe the adsorptionequilibrium data. A new Linear Driving Force (2-LDF) kinetic model, based on the bimodal size distribution ofmicropores and narrow mesopores observed for the ACs has been developed. The new model provided a moreaccurate description of the batch adsorption rates than that obtained from conventional kinetic models, and alsoenabled to relate the pore size distribution of the adsorbent with the adsorption kinetics. The validity of thismodel was checked in small-scale column fixed bed adsorption for the AC showing the highest affinity for bothEP. The kinetic model and equilibrium adsorption isotherm obtained from the batch experiments were suc-cessfully used to provide an accurate description of the bed service time and the full breakthrough profile ofacetanilide and antipyrine.
PB Elsevier
YR 2024
FD 2024-07-01
LK https://hdl.handle.net/10630/31135
UL https://hdl.handle.net/10630/31135
LA eng
NO María del Carmen Gutiérrez, Francisco José García-Mateos, Ramiro Ruiz-Rosas, Juana María Rosas, José Rodríguez-Mirasol, Tomás Cordero, Evaluation of acetanilide and antipyrine adsorption on lignin-derived activated carbons, Environmental Research, Volume 252, Part 2, 2024, 118918, ISSN 0013-9351,
NO This work was supported by MCIN [TED2021-131324B–C21;PID2022-140844OB-I00] and European Union “NextGenerationEU”/PRTR (MCIN/AEI/10.13039/501100011033); MINECO [FJCI-2015-25788]. Funding for open access charge: Universidad de Malaga/CBUA.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026