Environmentally Induced Changes of Commercial Carbon Nanotubes in Aqueous Suspensions. Adaptive Behavior of Bacteria in Biofilms

The effects of environmental factors such as sunlight irradiation and the presence of humic acid (HA) on the physicochemical properties of commercial multiwall carbon nanotubes (MWCNT) suspended in a simulated inorganic matrix (SIM) and their impacts on bacteria growing in biofilms were evaluated. B...

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Detalles Bibliográficos
Autores principales: Rodríguez Sartori, Damián Ezequiel, Bertuola, Marcos, Miñán, Alejandro, Gonik, Eduardo, González, Mónica Cristina, Fernández Lorenzo de Mele, Mónica Alicia
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Química
Biofilms
Bacteria
Suspensions
Carbon nanotubes
Irradiation
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/123629
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-123629
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Biofilms
Bacteria
Suspensions
Carbon nanotubes
Irradiation
spellingShingle Química
Biofilms
Bacteria
Suspensions
Carbon nanotubes
Irradiation
Rodríguez Sartori, Damián Ezequiel
Bertuola, Marcos
Miñán, Alejandro
Gonik, Eduardo
González, Mónica Cristina
Fernández Lorenzo de Mele, Mónica Alicia
Environmentally Induced Changes of Commercial Carbon Nanotubes in Aqueous Suspensions. Adaptive Behavior of Bacteria in Biofilms
topic_facet Química
Biofilms
Bacteria
Suspensions
Carbon nanotubes
Irradiation
description The effects of environmental factors such as sunlight irradiation and the presence of humic acid (HA) on the physicochemical properties of commercial multiwall carbon nanotubes (MWCNT) suspended in a simulated inorganic matrix (SIM) and their impacts on bacteria growing in biofilms were evaluated. Both solar irradiation and the presence of HA lead to the dissolution of adsorbed metals on the MWCNT, which are residues of synthesis catalysts. Also, preferential adsorption of certain HA components on the MWCNT induces important modifications in the aliphatic/aromatic relationship of HA components in solution and the generation and release of new moieties. Results demonstrated that the variation of such physicochemical parameters strongly affects the interactions of MWCNT with Pseudomonas aeruginosa sessile bacteria. Thus, the number of attached bacteria increased, and stress responses such as decrease in bacterial size were found in the presence of sunlight-irradiated MWCNT with a particular distribution of extracellular polymeric substances (EPS) strands. A shielding effect was observed when HA was added. It was concluded that physicochemical alterations caused by environmental conditions (with/without irradiation, presence/absence of HA) on MWCNT-containing SIM trigger distinctive adaptive behavior of bacteria in biofilms. This information must be taken into account in the development of biologically assisted treatments for organic metal co-contamination of MWCNT-containing media since MWCNT discharge alters the physicochemical properties and composition of the aqueous environment and the response of the biofilms that interact with it.
format Articulo
Articulo
author Rodríguez Sartori, Damián Ezequiel
Bertuola, Marcos
Miñán, Alejandro
Gonik, Eduardo
González, Mónica Cristina
Fernández Lorenzo de Mele, Mónica Alicia
author_facet Rodríguez Sartori, Damián Ezequiel
Bertuola, Marcos
Miñán, Alejandro
Gonik, Eduardo
González, Mónica Cristina
Fernández Lorenzo de Mele, Mónica Alicia
author_sort Rodríguez Sartori, Damián Ezequiel
title Environmentally Induced Changes of Commercial Carbon Nanotubes in Aqueous Suspensions. Adaptive Behavior of Bacteria in Biofilms
title_short Environmentally Induced Changes of Commercial Carbon Nanotubes in Aqueous Suspensions. Adaptive Behavior of Bacteria in Biofilms
title_full Environmentally Induced Changes of Commercial Carbon Nanotubes in Aqueous Suspensions. Adaptive Behavior of Bacteria in Biofilms
title_fullStr Environmentally Induced Changes of Commercial Carbon Nanotubes in Aqueous Suspensions. Adaptive Behavior of Bacteria in Biofilms
title_full_unstemmed Environmentally Induced Changes of Commercial Carbon Nanotubes in Aqueous Suspensions. Adaptive Behavior of Bacteria in Biofilms
title_sort environmentally induced changes of commercial carbon nanotubes in aqueous suspensions. adaptive behavior of bacteria in biofilms
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/123629
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