Chitosan functionalized with 2-methylpyridine cross-linker cellulose to adsorb Pb(II) from water

Jorge Lozano-Montante, Raquel Garza-Hernández, Mario Sánchez, Edgar Moran-Palacio, Guillermo Niño-Medina, Mario Almada*, Luis Hernández-García

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

In this study, chitosan was chemically modified with 2-methylpyridine. Subsequently, the modified chitosan was cross-linked to cellulose using succinic anhydride. Additionally, the capacity of cellulose derivatives to adsorb Pb(II) ions in an aqueous solution was studied through the determination of Pb(II) ions concentration in water, using microwave plasma atomic emission spectroscopy (MP-AES). A maximum adsorption capacity of 6.62, 43.14, 60.6, and 80.26 mg/g was found for cellulose, cellulose-succinic acid, cellulose-chitosan, and cellulose-chitosan-pyridine, respectively. The kinetic data analysis of the adsorption process showed a pseudo-second-order behavior. The increase in metal removal from water is possibly due to metal chelation with the carbonyl group of succinic acid, and the pyridine groups incorporated into chitosan.

Original languageEnglish
Article number3166
JournalPolymers
Volume13
Issue number18
DOIs
StatePublished - Sep 2021

Bibliographical note

Funding Information:
Funding: This research was funded by CONACYT for the project CB-175913 and TNM-PIC.

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

  • Adsorption
  • Cellulose
  • Chitosan
  • Isotherms
  • Kinetics

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