Enhanced retention of bacteria by TiO2 nanoparticles in saturated porous media

"The simultaneous transport of TiO2 nanoparticles and bacteria Pseudomonas aeruginosa in saturated porous media was investigated. Nanoparticle and bacterium size and surface charge were measured as a function of electrolyte concentration. Sand column breakthrough curves were obtained for single...

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Autores principales: Gentile, Guillermina José, Fidalgo de Cortalezzi, María Marta
Formato: Artículos de Publicaciones Periódicas acceptedVersion
Lenguaje:Inglés
Publicado: info
Materias:
NANOPARTICULAS
DIOXIDO DE TITANIO
BACTERIAS
TRATAMIENTO DEL AGUA
FILTRACION
PSEUDOMONAS AERUGINOSA
Acceso en línea:http://ri.itba.edu.ar/handle/123456789/3218
Aporte de:
Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA) de Instituto Tecnológico de Buenos Aires (ITBA)
id I32-R138-123456789-3218
record_format dspace
spelling I32-R138-123456789-32182022-12-07T13:06:25Z Enhanced retention of bacteria by TiO2 nanoparticles in saturated porous media Gentile, Guillermina José Fidalgo de Cortalezzi, María Marta NANOPARTICULAS DIOXIDO DE TITANIO BACTERIAS TRATAMIENTO DEL AGUA FILTRACION PSEUDOMONAS AERUGINOSA "The simultaneous transport of TiO2 nanoparticles and bacteria Pseudomonas aeruginosa in saturated porous media was investigated. Nanoparticle and bacterium size and surface charge were measured as a function of electrolyte concentration. Sand column breakthrough curves were obtained for single and combined suspensions, at four different ionic strengths. DLVO and classical filtration theories were employed to model the interactions between particles and between particles and sand grains. Attachment of TiO2 to the sand was explained by electrostatic forces and these nanoparticles acted as bonds between the bacteria and the sand, leading to retention. Presence of TiO2 significantly increased the retention of bacteria in the sand bed, but microorganisms were released when nanomaterial influx ceased. The inclusion of nanomaterials in saturated porous media may have implications for the design and operation of sand filters in water treatment." info:eu-repo/date/embargoEnd/2018-08-01 2020-10-28T15:55:37Z 2020-10-28T15:55:37Z 2016-08 Artículos de Publicaciones Periódicas info:eu-repo/semantics/acceptedVersion 0169-7722 http://ri.itba.edu.ar/handle/123456789/3218 en info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jconhyd.2016.05.004 info:eu-repo/semantics/embargoedAccess application/pdf
institution Instituto Tecnológico de Buenos Aires (ITBA)
institution_str I-32
repository_str R-138
collection Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA)
language Inglés
topic NANOPARTICULAS
DIOXIDO DE TITANIO
BACTERIAS
TRATAMIENTO DEL AGUA
FILTRACION
PSEUDOMONAS AERUGINOSA
spellingShingle NANOPARTICULAS
DIOXIDO DE TITANIO
BACTERIAS
TRATAMIENTO DEL AGUA
FILTRACION
PSEUDOMONAS AERUGINOSA
Gentile, Guillermina José
Fidalgo de Cortalezzi, María Marta
Enhanced retention of bacteria by TiO2 nanoparticles in saturated porous media
topic_facet NANOPARTICULAS
DIOXIDO DE TITANIO
BACTERIAS
TRATAMIENTO DEL AGUA
FILTRACION
PSEUDOMONAS AERUGINOSA
description "The simultaneous transport of TiO2 nanoparticles and bacteria Pseudomonas aeruginosa in saturated porous media was investigated. Nanoparticle and bacterium size and surface charge were measured as a function of electrolyte concentration. Sand column breakthrough curves were obtained for single and combined suspensions, at four different ionic strengths. DLVO and classical filtration theories were employed to model the interactions between particles and between particles and sand grains. Attachment of TiO2 to the sand was explained by electrostatic forces and these nanoparticles acted as bonds between the bacteria and the sand, leading to retention. Presence of TiO2 significantly increased the retention of bacteria in the sand bed, but microorganisms were released when nanomaterial influx ceased. The inclusion of nanomaterials in saturated porous media may have implications for the design and operation of sand filters in water treatment."
format Artículos de Publicaciones Periódicas
acceptedVersion
author Gentile, Guillermina José
Fidalgo de Cortalezzi, María Marta
author_facet Gentile, Guillermina José
Fidalgo de Cortalezzi, María Marta
author_sort Gentile, Guillermina José
title Enhanced retention of bacteria by TiO2 nanoparticles in saturated porous media
title_short Enhanced retention of bacteria by TiO2 nanoparticles in saturated porous media
title_full Enhanced retention of bacteria by TiO2 nanoparticles in saturated porous media
title_fullStr Enhanced retention of bacteria by TiO2 nanoparticles in saturated porous media
title_full_unstemmed Enhanced retention of bacteria by TiO2 nanoparticles in saturated porous media
title_sort enhanced retention of bacteria by tio2 nanoparticles in saturated porous media
publishDate info
url http://ri.itba.edu.ar/handle/123456789/3218
work_keys_str_mv AT gentileguillerminajose enhancedretentionofbacteriabytio2nanoparticlesinsaturatedporousmedia
AT fidalgodecortalezzimariamarta enhancedretentionofbacteriabytio2nanoparticlesinsaturatedporousmedia
_version_ 1765661046779936768

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