Encapsulation and controlled release of isothiazolinones in zeolite NaY (FAU)

NaY zeolite, an ordered, large pore molecular sieve pertaining to the FAU zeolite structural group, was studied as a novel matrix for the efficient preparation of a supported isothiazolinone-based biocide, and the results were compared to those corresponding to mesoporous silicas. To analyze the pos...

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Autores principales: Mardones, Lucas Emanuel, Barberia Roque, Leyanet, Legnoverde, María Soledad, Gargiulo, Nicola, Bellotti, Natalia, Basaldella, Elena Isabel
Formato: Articulo
Lenguaje:Inglés
Publicado: 2022
Materias:
Química
Zeolite
Biocide
Isothiazolinones
Adsorption
Controlled release
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/146543
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-146543
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Zeolite
Biocide
Isothiazolinones
Adsorption
Controlled release
spellingShingle Química
Zeolite
Biocide
Isothiazolinones
Adsorption
Controlled release
Mardones, Lucas Emanuel
Barberia Roque, Leyanet
Legnoverde, María Soledad
Gargiulo, Nicola
Bellotti, Natalia
Basaldella, Elena Isabel
Encapsulation and controlled release of isothiazolinones in zeolite NaY (FAU)
topic_facet Química
Zeolite
Biocide
Isothiazolinones
Adsorption
Controlled release
description NaY zeolite, an ordered, large pore molecular sieve pertaining to the FAU zeolite structural group, was studied as a novel matrix for the efficient preparation of a supported isothiazolinone-based biocide, and the results were compared to those corresponding to mesoporous silicas. To analyze the possibility of reducing the biocide ecotoxicity by encapsulation, a commercial biocide used for latex preservation (CMIT/MIT) was incorporated in the NaY zeolite structure by using two different methodologies: equilibrium adsorption (Zeo/Bio sample) and impregnation by total wetting (Zeo/Impreg sample). In the corresponding release tests, despite the large dif ference in the initial biocide amount released, the shape of the curve is nearly the same for both methods. Microbiological tests against fungi and bacteria were performed. The obtained results were compared to those previously obtained using mesoporous ordered silica SBA-15 and mesoporous foam MCF matrices (mesoporous/ biocide samples named SBA-15/Bio, SBA-15/Impreg and MCF/Bio and MCF/Impreg respectively). For the Staphylococcus aureus the results from agar well diffusion assay shows that the inhibition zone is about 64 mm for Zeo/Impreg and about 55 mm for Zeo/Bio. As regards all the other materials, the inhibition zone does not exceed 46 mm. In the case of Escherichia coli, Zeo/Bio and Zeo/Impreg have an inhibition zone of about 43 and 37 mm, respectively. No one of the other materials shows an inhibition zone larger than 30 mm. Zeo/Impreg showed a greater inhibition zone against fungi (47 mm versus Chaetomium globosum and 53 mm versus Alternaria alternata, respectively) than SBA-15 and MCF impregnated with biocide
format Articulo
Articulo
author Mardones, Lucas Emanuel
Barberia Roque, Leyanet
Legnoverde, María Soledad
Gargiulo, Nicola
Bellotti, Natalia
Basaldella, Elena Isabel
author_facet Mardones, Lucas Emanuel
Barberia Roque, Leyanet
Legnoverde, María Soledad
Gargiulo, Nicola
Bellotti, Natalia
Basaldella, Elena Isabel
author_sort Mardones, Lucas Emanuel
title Encapsulation and controlled release of isothiazolinones in zeolite NaY (FAU)
title_short Encapsulation and controlled release of isothiazolinones in zeolite NaY (FAU)
title_full Encapsulation and controlled release of isothiazolinones in zeolite NaY (FAU)
title_fullStr Encapsulation and controlled release of isothiazolinones in zeolite NaY (FAU)
title_full_unstemmed Encapsulation and controlled release of isothiazolinones in zeolite NaY (FAU)
title_sort encapsulation and controlled release of isothiazolinones in zeolite nay (fau)
publishDate 2022
url http://sedici.unlp.edu.ar/handle/10915/146543
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