Adsorption experiment of toxic micro-pollutants derived from automobiles using red soil.
Water Sci Technol
; 72(11): 2082-8, 2015.
Article
em En
| MEDLINE
| ID: mdl-26606103
ABSTRACT
In some countries, non-point source pollution derived from a city's economic activities tends to be a barrier to the improvement of water quality. Roadway runoff is known to contain toxic micro-pollutants such as polycyclic aromatic hydrocarbons (PAHs). Conversely, red soil is known to adsorb some organic matter. In this study, artificial roadway runoff water containing toxic micro-pollutants was made using roadway dust collected from a highway, and used for both batch-type tests and soil column tests with red soil in order to understand adsorption ability of the red soil on such toxic micro-pollutants, especially PAHs. In the batch-type tests, PAHs could be removed by approximately 40% when the contact time was 90 minutes. In the soil column tests, PAHs were removed by more than 80% while suspended solids were removed by more than 90%. Notably, PAHs with a high molecular weight were removed more readily in the tests than PAHs with a low molecular weight.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Solo
/
Poluentes Químicos da Água
Tipo de estudo:
Risk_factors_studies
Idioma:
En
Revista:
Water Sci Technol
Ano de publicação:
2015
Tipo de documento:
Article