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Removal of Cu(II) from aqueous solutions imparted by a pectin-based film: Cytocompatibility, antimicrobial, kinetic, and equilibrium studies.
- Source :
-
International Journal of Biological Macromolecules . Jun2020, Vol. 152, p77-89. 13p. - Publication Year :
- 2020
-
Abstract
- To obtain pectin-based films is challenging due to the aqueous instability of polyelectrolyte mixtures. We overcome this issue by blending chitosan to pectin of high O -methoxylation degree (56%), followed by solvent evaporation. A durable film containing 74 wt% pectin content was produced and used as an adsorbent material toward Cu(II) ions. Kinetic and adsorption equilibrium studies showed that the pseudo-second-order and Sips isotherm models adjusted well to the experimental data, respectively. Langmuir isotherm indicated a maximum adsorption capacity (q m) for Cu(II) removal of 29.20 mg g−1. Differential scanning calorimetry, contact angle measurements, and X-ray photoelectron spectroscopy confirm the adsorption. The chemisorption plays an essential role in the process; thereby, the film reusability is low. After adsorption, the cytocompatible film/Cu(II) pair prevents the proliferation of Escherichia coli. • A physically crosslinked film contains high pectin content (74 wt%). • The film presents sorption capacity for Cu(II) ions of 29.20 mg g−1. • The chemisorption plays an essential role in the Cu(II) adsorption. • After adsorption, the film/Cu(II) has cytocompatibility for mammalian cells. • The film/Cu(II) prevents the spreading of E. coli on its surface. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01418130
- Volume :
- 152
- Database :
- Academic Search Index
- Journal :
- International Journal of Biological Macromolecules
- Publication Type :
- Academic Journal
- Accession number :
- 142930445
- Full Text :
- https://doi.org/10.1016/j.ijbiomac.2020.02.220