Version 1
: Received: 30 May 2023 / Approved: 31 May 2023 / Online: 31 May 2023 (12:00:20 CEST)
How to cite:
Cansado, I.P.D.P.; Mourão, P.A.M.; Castanheiro, J.E. Performance of Regenerated Activated Carbons on Pesticides Removal from the Aqueous Phase. Preprints2023, 2023052243. https://doi.org/10.20944/preprints202305.2243.v1
Cansado, I.P.D.P.; Mourão, P.A.M.; Castanheiro, J.E. Performance of Regenerated Activated Carbons on Pesticides Removal from the Aqueous Phase. Preprints 2023, 2023052243. https://doi.org/10.20944/preprints202305.2243.v1
Cansado, I.P.D.P.; Mourão, P.A.M.; Castanheiro, J.E. Performance of Regenerated Activated Carbons on Pesticides Removal from the Aqueous Phase. Preprints2023, 2023052243. https://doi.org/10.20944/preprints202305.2243.v1
APA Style
Cansado, I.P.D.P., Mourão, P.A.M., & Castanheiro, J.E. (2023). Performance of Regenerated Activated Carbons on Pesticides Removal from the Aqueous Phase. Preprints. https://doi.org/10.20944/preprints202305.2243.v1
Chicago/Turabian Style
Cansado, I.P.D.P., Paulo Alexandre Mira Mourão and José Eduardo Castanheiro. 2023 "Performance of Regenerated Activated Carbons on Pesticides Removal from the Aqueous Phase" Preprints. https://doi.org/10.20944/preprints202305.2243.v1
Abstract
This paper describes the influence of the regeneration treatments on 4-chloro-2-methyl-phenoxyacetic acid (MCPA)-loaded activated carbons (ACs) on adsorption-desorption cycles with two commercial ACs, Merck and Norit 1240 X ( Norit 1240 X was used in a granular and powder form). The ACs were saturated with MCPA and then submitted to four regeneration cycles, by washing with ethanol, NaOH solutions and washed with NaOH solutions followed by a thermal treatment. The ACs regenerated with ethanol showed a better performance concerning the successive adsorption-desorption cycles. On the first cycle, the MCPA desorbed, from washing with ethanol, from all ACs was higher than 99%. After a fourth adsorption-desorption cycle, washing regeneration combined with thermal treatment allowed excellent regeneration results. The amount of MCPA adsorbed on Norit 1240 X AC was higher than the amount adsorbed in the first cycle. MCPA adsorption kinetic data were analyzed by applying pseudo-first-order, pseudo-second-order, and Weber-Morris models. The pseudo-second-order fit better fit to the data and the Weber-Morris representation allows confirming that on Norit 1240 X, in a granular form, the pore diffusion was the limiting factor concerning the MCPA adsorption.
Chemistry and Materials Science, Materials Science and Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
