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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Ionic liquid functionalization of chitosan beads for improving thermal stability and copper ions uptake from aqueous solution

Full text
Author(s):
Cunha, Bruno S. [1] ; Bataglioli, Rogerio A. [1] ; Taketa, Thiago B. [1] ; Lopes, Laise M. [1] ; Beppu, Marisa M. [1]
Total Authors: 5
Affiliation:
[1] Univ Estadual Campinas, Sch Chem Engn, UNICAMP, 500 Albert Einstein Av, BR-13083852 Campinas, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING; v. 7, n. 3 JUN 2019.
Web of Science Citations: 1
Abstract

Chitosan (CHI) beads modified with ionic liquids (ILs) were synthesized to remove copper ions from aqueous solution by adsorption. This paper presents the results of isotherm and kinetics for both pristine and ILs-modified CHI beads, comparing their adsorption capacity and evaluating the mechanisms involved in the batch adsorption process. Isotherm data for Cu(II) ions adsorption were fitted to Langmuir and Freundlich models, while adsorption kinetic was assessed by adjusting the data to pseudo-first order, pseudo-second order and intra-particle models. Characterization results indicate that IL functionalization promotes a significant modification on bead morphology, crystallinity and thermal stability. ILs lead to an increase in the adsorption capacity at lower Cu(II) concentrations (20 mg L-1), followed by the higher affinity of Cu(II) to the adsorbate. Due to the higher stability and affinity to copper ions, ILs-modified CHI beads come out as a promising strategy for developing new materials and processes with improved heavy metal uptake properties. (AU)

FAPESP's process: 16/10193-9 - New mechanisms for controlling triggered release of anticancer drugs in cellular backpacks
Grantee:Rogério Aparecido Bataglioli
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 13/05135-1 - Nanostructured antimicrobial coatings containing chitosan produced by self-assembly technique (layer-by-layer) for textile substrates
Grantee:Thiago Bezerra Taketa
Support Opportunities: Scholarships in Brazil - Doctorate