Document
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Ultrasound assisted preparation of chitosan–vermiculite bionanocomposite foams for cadmium uptake
type: Article
e iscopus: 2-s2.0-84949664977
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related by: authorship_28654
type: Document
related by: authorship_28653
doi: 10.1016/j.clay.2015.11.024
most specific type: Article
related by: authorship_28650
page start: 40
type: Entity
has funding vehicle: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, CAPES
has publication venue: Applied Clay Science
freetext keyword: Bionanocomposites; Cd(II) adsorption; Chitosan; Foams; Vermiculite Cadmium compounds; Characterization; Chitin; Chitosan; Dyes; Foams; Isotherms; Solutions; Ultrasonics; Bionanocomposites; Cd adsorptions; Experimental conditions; High adsorption capacity; Individual components; Physico-chemical characterization; Ultrasound irradiation; Vermiculite; Adsorption; adsorption; cadmium; cation; composite; foam; nanoparticle; polymer; polysaccharide; ultrasonics; vermiculite
abstract: The objective of this work was the development of functional bionanocomposites based on the intercalation of the cationic biopolymer chitosan in natural or in organically modified vermiculite samples under experimental conditions involving ultrasound irradiation. The resulting materials were processed as macroporous foams with the aim to apply them in the removal of Cd(II) ions from aqueous solution. Physicochemical characterization confirmed the intercalation of chitosan into the interlayer space of vermiculite, causing the exfoliation of VU layers in those bionanocomposites. They were processed as foams by means of freeze-drying resulting in materials that show interconnected elongated macropores with average diameter around 150–200 μm, and the material in the cell walls exhibited a tendency to organize in parallel planes. The adsorption equilibrium data of Cd(II) on the bionanocomposite foams, carried out in batch mode, was interpreted with the Langmuir, Freundlich and Prausnitz–Radke (P–R) isotherm models, and the P-R isotherm showed the best fit to the experimental data. The adsorption capacity was increased by raising the solution pH, which most likely favors a chelation mechanism between the chitosan chains and the Cd(II) cations. The chitosan–vermiculite bionanocomposites with the highest chitosan content showed exceptionally high adsorption capacity values, at least three times higher than those of the individual components. © 2015 Elsevier B.V.
date time value: article date 4800
has funding vehicle: MP1202
type: Generically Dependent Continuant
page end: 49
has funding vehicle: Comisión Interministerial de Ciencia y Tecnología, CICYT: MAT2012-31759
type: Information Content Entity
related by: authorship_28649
type: Continuant
crisid: 4800
volume: 130
related by: authorship_28652
estado: published
related by: authorship_28651
most specific type: Document
origen: scopus

Comisión Interministerial de Ciencia y Tecnología, CICYT: MAT2012-31759
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type: BFO_0000020
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type: Grant
type: Continuant
funding vehicle for: Ultrasound assisted preparation of chitosan–vermiculite bionanocomposite foams for cadmium uptake

Continuant
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MP1202
type: Relationship
type: BFO_0000020
type: Entity
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type: Grant
type: Continuant
funding vehicle for: Ultrasound assisted preparation of chitosan–vermiculite bionanocomposite foams for cadmium uptake

Entity
type: Class

Applied Clay Science
type: Thing
type: Entity
type: Continuant
type: Periodical
type: Journal
type: Collection
publication venue for: Ultrasound assisted preparation of chitosan–vermiculite bionanocomposite foams for cadmium uptake
type: Document
type: Generically Dependent Continuant
type: Information Content Entity

Generically Dependent Continuant
type: Class

RDF description of Ultrasound assisted preparation of chitosan–vermiculite bionanocomposite foams for cadmium uptake - http://orbis.uaslp.mx/vivo/individual/scopus4799
rights: termsOfUse
date: 2026-08-27T06:28:52
publisher: vivo
type: Document

Article
type: Class

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, CAPES
type: Relationship
type: BFO_0000020
type: Entity
type: Thing
type: Grant
type: Continuant
funding vehicle for: Ultrasound assisted preparation of chitosan–vermiculite bionanocomposite foams for cadmium uptake

Information Content Entity
type: Class