Effect of cerium dioxide, titanium dioxide, silver, and gold nanoparticles on the activity of microbial communities intended in wastewater treatment
García, Ana (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Delgado Ramisa, Lucía (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Torà Suárez, Josep Anton ![ORCID Identifier](/img/uab/orcid.ico)
(Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Casals, Eudald ![ORCID Identifier](/img/uab/orcid.ico)
(Institut Català de Nanociència i Nanotecnologia)
González, Edgar E. ![ORCID Identifier](/img/uab/orcid.ico)
(Institut Català de Nanociència i Nanotecnologia)
Puntes, Víctor ![ORCID Identifier](/img/uab/orcid.ico)
(Institut Català de Nanociència i Nanotecnologia)
Font i Segura, Xavier
(Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Sanchez, Antoni
(Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Carrera, Julian
(Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Date: |
2012 |
Abstract: |
Growth in production and use of nanoparticles (NPs) will result increased concentrations of these in industrial and urban wastewaters and, consequently, in wastewater-treatment facilities. The effect of this increase on the performance of the wastewater-treatment process has not been studied systematically and including all the microbial communities involved in wastewater treatment. The present work investigates, by using respiration tests and biogas-production analysis, the inhibitory effect of four different commonly used metal oxide (CeO₂ and TiO₂) and zero-valent metal (Ag and Au) nanoparticles on the activity of the most important microbial communities present in a modern wastewater-treatment plant. Specifically, the actions of ordinary heterotrophic organisms, ammonia oxidizing bacteria, and thermophilic and mesophilic anaerobic bacteria were tested in the presence and absence of the nanoparticles. In general, CeO₂ nanoparticles caused the greatest inhibition in biogas production (nearly 100%) and a strong inhibitory action of other biomasses; Ag nanoparticles caused an intermediate inhibition in biogas production (within 33-50%) and a slight inhibition in the action of other biomasses, and Au and TiO₂ nanoparticles caused only slight or no inhibition for all tested biomasses. |
Note: |
Financial support was provided by the Spanish Ministerio de Medio Ambiente y Medio Rural y Marino (Project Exp. 007/RN08/03.1). |
Note: |
Altres ajuts: MAPAMA/007/RN08/03.1 |
Rights: |
Tots els drets reservats. ![](/img/licenses/InC.ico) |
Language: |
Anglès |
Document: |
Article ; recerca ; Versió sotmesa a revisió |
Subject: |
Inorganic nanoparticles ;
Inhibition ;
Respirometry ;
Anaerobic biomass ;
Ammonia oxidizing bacteria ;
Ordinary heterotrophic organisms |
Published in: |
Journal of hazardous materials, Vol. 199-200 (Jan. 2012) , p. 64-72, ISSN 1873-3336 |
DOI: 10.1016/j.jhazmat.2011.10.057
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Record created 2016-09-12, last modified 2024-04-22