Current concerns for sustainability and the environment make low-impact materials desirable for environmental remediation and, in particular wastewater treatment. We obtained supramolecular gels of l-amino acids in the deep eutectic solvent formed by choline chloride and phenylacetic acid. After gel characterization, and investigating gel–sol transition temperatures, gelation kinetics, rheological properties, and morphology, the gels were applied as sorbents to remove cationic dyes from aqueous solutions. The effects of the pH, dye nature, volume, and concentration of wastewater were analyzed, and the best result was obtained with a l-phenylalanine-based eutectogel. It can be reused for at least 9 times without losing efficiency, also with dye mixtures. Interestingly, this gel can be loaded onto columns to decolorize flowing solutions, achieving 85% of removal efficiency in only 10 minutes and allowing its reuse for at least 4 cycles. In terms of adsorption capacity, this eutectogel is competitive with efficient gel-based dye sorbent systems, with a value 1930mg/g reached at a high concentration of rhodamine B 479mg/L.

Marullo S., Meli A., Dintcheva N., Infurna G., Rizzo C., D'Anna F. (2020). Environmentally friendly eutectogels comprising l-amino acids and deep eutectic solvents: Efficient materials for wastewater treatment. CHEMPLUSCHEM, 85(2), 301-311 [10.1002/cplu.202000017].

Environmentally friendly eutectogels comprising l-amino acids and deep eutectic solvents: Efficient materials for wastewater treatment

Marullo S.;Meli A.;Dintcheva N.;Infurna G.;Rizzo C.;D'Anna F.
2020-01-01

Abstract

Current concerns for sustainability and the environment make low-impact materials desirable for environmental remediation and, in particular wastewater treatment. We obtained supramolecular gels of l-amino acids in the deep eutectic solvent formed by choline chloride and phenylacetic acid. After gel characterization, and investigating gel–sol transition temperatures, gelation kinetics, rheological properties, and morphology, the gels were applied as sorbents to remove cationic dyes from aqueous solutions. The effects of the pH, dye nature, volume, and concentration of wastewater were analyzed, and the best result was obtained with a l-phenylalanine-based eutectogel. It can be reused for at least 9 times without losing efficiency, also with dye mixtures. Interestingly, this gel can be loaded onto columns to decolorize flowing solutions, achieving 85% of removal efficiency in only 10 minutes and allowing its reuse for at least 4 cycles. In terms of adsorption capacity, this eutectogel is competitive with efficient gel-based dye sorbent systems, with a value 1930mg/g reached at a high concentration of rhodamine B 479mg/L.
2020
Settore CHIM/06 - Chimica Organica
Marullo S., Meli A., Dintcheva N., Infurna G., Rizzo C., D'Anna F. (2020). Environmentally friendly eutectogels comprising l-amino acids and deep eutectic solvents: Efficient materials for wastewater treatment. CHEMPLUSCHEM, 85(2), 301-311 [10.1002/cplu.202000017].
File in questo prodotto:
File Dimensione Formato  
Chempluschem 2020.pdf

Solo gestori archvio

Descrizione: Articolo
Tipologia: Versione Editoriale
Dimensione 1.6 MB
Formato Adobe PDF
1.6 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/398454
Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 37
  • ???jsp.display-item.citation.isi??? 31
social impact