Full- and pilot-scale GAC adsorption of organic micropollutants.
Water Res
; 68: 238-48, 2015 Jan 01.
Article
em En
| MEDLINE
| ID: mdl-25462732
ABSTRACT
Granular activated carbon (GAC) adsorption of 30 environmentally relevant micropollutants (MP) from four surface waters was investigated at the pilot-scale with empty bed contact times (EBCTs) of 7 and 15 min. An increase in background dissolved organic matter resulted in more and earlier MP breakthrough. Compared to an EBCT of 7 min, MP breakthrough at an EBCT of 15 min demonstrated 52% later breakthrough on average for five MPs on a throughput basis. A regression model was developed with data from three waters to predict MP throughput in bed volumes to 10% breakthrough (BV10%) based on the influent dissolved organic carbon concentration and the MP pH-dependent octanol-water partition coefficient, polarizability, and molecular volume. The regression model over predicted full-scale BV10% values when applied to a wastewater-water impacted water source and to GAC with a larger particle diameter, for which a particle size adjustment was able to account for most of the difference.
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Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
/
Carvão Vegetal
/
Purificação da Água
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Water Res
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Estados Unidos