Adsorption of AsIII, AsV and dimethylarsinic acid onto synthesized lepidocrocite - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Environmental Science and Health, Part A Année : 2013

Adsorption of AsIII, AsV and dimethylarsinic acid onto synthesized lepidocrocite

Résumé

The trapping of arsenic by zero valent iron is strongly dependant on iron by-products. Among these, lepidocrite has been scarcely studied. In this work, we studied the adsorption of two inorganic (As-III, As-V) and one organic (dimethylarsinic acid, DMA) arsenic species onto lepidocrocite. pH influence was considered in the range 5 to 9, which corresponds to natural water pH. Langmuir model was used to simulate As adsorption isotherms. Our results showed that lepidocrocite offers high adsorption capacities: up to 0,25, 0,41 and 1mol for As-V, DMA and As-III could be respectively trapped per kilogram of zero-valent iron. pH influence varied from one arsenic species to another: increasing pH improve As-III and DMA sorption whereas it has a very low effect on As-V sorptio
Fichier non déposé

Dates et versions

hal-00925215 , version 1 (07-01-2014)

Identifiants

Citer

Junfeng Wan, Stéphane Simon, Véronique Deluchat, Marie Christine Dictor, Christophe Dagot. Adsorption of AsIII, AsV and dimethylarsinic acid onto synthesized lepidocrocite. Journal of Environmental Science and Health, Part A, 2013, 48 (10), pp.1272-1279. ⟨10.1080/10934529.2013.776916⟩. ⟨hal-00925215⟩
139 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More