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Modification of beads of chitosan and poly(vinyl alcohol) by means of glow discharge plasma for the adsorption of red 2 dye

Published online by Cambridge University Press:  08 February 2019

Antonio Alvarado-Bonifacio ,
Beatriz García-Gaitán Open the ORCID record for Beatriz García-Gaitán [Opens in a new window] ,
Celso Hernández-Tenorio ,
José Luis García-Rivas ,
Maricarmen Thalía Recillas-Mota ,
Rosa Elvira Zavala-Arce ,
María de la Luz Jiménez-Núñez  and
Teresa Soriano-Aguilar
Antonio Alvarado-Bonifacio
Affiliation:
Tecnológico Nacional de México/Instituto Tecnológico de Toluca, División de Estudios de Posgrado e Investigación, Av. Tecnológico s/n, Col. Agrícola Bellavista, C.P.52149, Metepec, Edo. de México, México.
Beatriz García-Gaitán*
Affiliation:
Tecnológico Nacional de México/Instituto Tecnológico de Toluca, División de Estudios de Posgrado e Investigación, Av. Tecnológico s/n, Col. Agrícola Bellavista, C.P.52149, Metepec, Edo. de México, México.
Celso Hernández-Tenorio
Affiliation:
Tecnológico Nacional de México/Instituto Tecnológico de Toluca, División de Estudios de Posgrado e Investigación, Av. Tecnológico s/n, Col. Agrícola Bellavista, C.P.52149, Metepec, Edo. de México, México.
José Luis García-Rivas
Affiliation:
Tecnológico Nacional de México/Instituto Tecnológico de Toluca, División de Estudios de Posgrado e Investigación, Av. Tecnológico s/n, Col. Agrícola Bellavista, C.P.52149, Metepec, Edo. de México, México.
Maricarmen Thalía Recillas-Mota
Affiliation:
Centro de Investigación en Alimentación y Desarrollo, Unidad Guaymas, Grupo de Investigación de Biopolímeros, Carretera al Varadero Nacional Km. 6.6, Col. Las Playitas, C.P.85480, Guaymas, Sonora, México.
Rosa Elvira Zavala-Arce
Affiliation:
Tecnológico Nacional de México/Instituto Tecnológico de Toluca, División de Estudios de Posgrado e Investigación, Av. Tecnológico s/n, Col. Agrícola Bellavista, C.P.52149, Metepec, Edo. de México, México.
María de la Luz Jiménez-Núñez
Affiliation:
Tecnológico Nacional de México/Instituto Tecnológico de Toluca, División de Estudios de Posgrado e Investigación, Av. Tecnológico s/n, Col. Agrícola Bellavista, C.P.52149, Metepec, Edo. de México, México.
Teresa Soriano-Aguilar
Affiliation:
Tecnológico Nacional de México/Instituto Tecnológico de Toluca, División de Estudios de Posgrado e Investigación, Av. Tecnológico s/n, Col. Agrícola Bellavista, C.P.52149, Metepec, Edo. de México, México.
*
*(Email: [email protected])
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Abstract

Three sizes of beads 1, 2 and 3 mm of chitosan and poly (vinyl alcohol) were generated and crosslinked with ethylene glycol diglycidyl ether. The modification was carried out using a glass reactor, in which the beads were exposed to the glow discharge plasma (GDP). The adsorption experiments were carried out in triplicate at 30 °C, 200 rpm, 72 h at different pH values in the range between 2 and 7. The concentrations of the dye in the supernatants were determined by UV-vis spectrophotometry. The 1 mm beads with and without modification, as well as those adsorbed and without adsorbing were characterized by FTIR and SEM. A higher and constant adsorption capacity was observed using modified beads (814, 857 and 1509 mg/g for the 3, 2 and 1 mm beads, respectively). For unmodified beads the adsorption capacity decreased when the initial pH value was increased. This makes the beads modified by GDP a robust material with respect to pH variation and a good candidate to be used in the removal of synthetic dyes.

Keywords

absorptionbiomaterialpolymer
Type
Articles
Information
MRS Advances , Volume 3 , Issue 63: International Materials Research Congress XXVII , 2018 , pp. 3869 - 3874
Copyright
Copyright © Materials Research Society 2019 

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