On the removal of s-triazine herbicides from waters using commercial low-cost granular carbons

Autor: F. J. ROJAS MORENO, J. M. CARDENETE LÓPEZ, R. MARÍN GALVÍN, M. J. MARTÍNEZ CORDÓN, J. M. RODRÍGUEZ MELLADO
Jazyk: angličtina
Rok vydání: 2010
Předmět:
Zdroj: Journal of the Serbian Chemical Society, Vol 75, Iss 3, Pp 405-413 (2010)
Druh dokumentu: article
ISSN: 0352-5139
Popis: The adsorption capacities of three low-cost granular active carbons, used in a water treatment facility for the removal of the triazine herbicides propazine, prometryn and prometon, was evaluated. Kinetic studies showed that the three carbon samples used could be suitable in practice for the treatment of moderate contents of the herbicides in contaminated waters. The apparent adsorption rate constants were calculated. Equilibrium studies showed that the data fit the Frumkin isotherm. The results show that in the adsorption process there are repulsive lateral interactions that depend mainly on the adsorbate molecules rather than the nature or distribution of the adsorption sites. Such lateral interactions seem to be established mainly between the isopropyl groups of adjacent molecules, being of the same order for the three molecules.
Databáze: Directory of Open Access Journals