Universidad de Costa Rica
  • Sobre Kérwá
  • Acceso Abierto
  • Cómo Depositar
  • Políticas
  • Contacto
    • español
    • English
  • English 
    • español
    • English
  • Login
View Item 
  •   Kérwá Home
  • Investigación
  • Ciencias básicas
  • Química
  • View Item
  •   Kérwá Home
  • Investigación
  • Ciencias básicas
  • Química
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Granular Activated Carbon Treatment May Result in Higher Predicted Genotoxicity in the Presence of Bromide

Artículo científico
View/Open
Versión final (3.133Mb)
Date
2016-07-28
Author
Krasner, Stuart W.
Fen Lee, Tiffany Chih
Westerhoff, Paul
Fischer, Natalia
Hanigan, David
Karanfil, Tanju
Beita Sandí, Wilson
Taylor Edmonds, Liz
Andrews, Robert C.
Metadata
Show full item record
Abstract
Certain unregulated disinfection byproducts (DBPs) are more of a health concern than regulated DBPs. Brominated species are typically more cytotoxic and genotoxic than their chlorinated analogs. The impact of granular activated carbon (GAC) on controlling the formation of regulated and selected unregulated DBPs following chlorine disinfection was evaluated. The predicted cyto- and genotoxicity of DBPs was calculated using published potencies based on the comet assay for Chinese hamster ovary cells (assesses the level of DNA strand breaks). Additionally, genotoxicity was measured using the SOS-Chromotest (detects DNA-damaging agents). The class sum concentrations of trihalomethanes, haloacetic acids, and unregulated DBPs, and the SOS genotoxicity followed the breakthrough of dissolved organic carbon (DOC), however the formation of brominated species did not. The bromide/DOC ratio was higher than the influent through much of the breakthrough curve (GAC does not remove bromide), which resulted in elevated brominated DBP concentrations in the effluent. Based on the potency of the haloacetonitriles and halonitromethanes, these nitrogen-containing DBPs were the driving agents of the predicted genotoxicity. GAC treatment of drinking or reclaimed waters with appreciable levels of bromide and dissolved organic nitrogen may not control the formation of unregulated DBPs with higher genotoxicity potencies.
URI
http://hdl.handle.net/10669/74410
External link to the item
10.1021/acs.est.6b02508
https://pubs.acs.org/doi/10.1021/acs.est.6b02508
Collections
  • Química [156]



  • Repositorios universitarios

  • Repositorio del SIBDI-UCR
  • Biblioteca Digital del CIICLA
  • Repositorio Documental Rafael Obregón Loría (CIHAC)
  • Biblioteca Digital Carlos Melendez (CIHAC)
  • Repositorio de Fotografías
  • Colección de videos de UPA-VAS
  • Sitios recomendados

  • Buscador regional de LA Referencia
  • Buscador del Open ROAR
  • Scientific Electronic Library Online (SciELO)
  • Directory of Open Access Journals (DOAJ)
  • Redalyc
  • Redes sociales

  • facebook.com/repositoriokerwa
  • @Ciencia_UCR
  • Sobre Kérwá
  • Acceso Abierto
  • Cómo depositar
  • Políticas
Contact Us | Send Feedback
Repositorio Institucional de la Universidad de Costa Rica. Algunos derechos reservados. Este repositorio funciona con DSpace.
Universidad de Costa Rica
 

 

Browse

All of KérwáCommunities & CollectionsTitlesAuthorsSubjectsProcedenceTypeThis CollectionTitlesAuthorsSubjectsProcedenceType

My Account

LoginRegister

  • Repositorios universitarios

  • Repositorio del SIBDI-UCR
  • Biblioteca Digital del CIICLA
  • Repositorio Documental Rafael Obregón Loría (CIHAC)
  • Biblioteca Digital Carlos Melendez (CIHAC)
  • Repositorio de Fotografías
  • Colección de videos de UPA-VAS
  • Sitios recomendados

  • Buscador regional de LA Referencia
  • Buscador del Open ROAR
  • Scientific Electronic Library Online (SciELO)
  • Directory of Open Access Journals (DOAJ)
  • Redalyc
  • Redes sociales

  • facebook.com/repositoriokerwa
  • @Ciencia_UCR
  • Sobre Kérwá
  • Acceso Abierto
  • Cómo depositar
  • Políticas
Contact Us | Send Feedback
Repositorio Institucional de la Universidad de Costa Rica. Algunos derechos reservados. Este repositorio funciona con DSpace.
Universidad de Costa Rica