Adsorption characteristics of a phenoxy acetic acid herbicide on activatedcarbon

Authors
Belmouden, M Assabbane, A Ichou, YA
Citation
M. Belmouden et al., Adsorption characteristics of a phenoxy acetic acid herbicide on activatedcarbon, J ENVIR MON, 2(3), 2000, pp. 257-260
Citations number
23
Categorie Soggetti
Environment/Ecology
Journal title
JOURNAL OF ENVIRONMENTAL MONITORING
ISSN journal
14640325 → ACNP
Volume
2
Issue
3
Year of publication
2000
Pages
257 - 260
Database
ISI
SICI code
1464-0325(2000)2:3<257:ACOAPA>2.0.ZU;2-7
Abstract
The adsorption of 2,4-dichlorophenoxyacetic acid (2,4-D) by two powdered co al activated carbons was studied in aqueous solution. The modelling of the adsorption equilibrium showed that the adsorption of 2,4-D fitted a Langmui r isotherm. Adsorption was influenced by the activated carbon type, adsorbe nt concentration and solution characteristics. The adsorption was found to decrease with an increase in pH over the range 1.5-9. Maximum adsorption oc curred at pH approximate to 2.5, which corresponds to the 2,4-D pK(a) value . The amount of 2,4-D adsorbed was also found to depend on the NaCl concent ration.