Sorption of arsenic on natural and modified materials | Uklanjanje arsena iz vode na prirodnim i modifikovanim sorbentima
2009
Jovanovic, B., Univerzitet u Beogradu, Beograd (Serbia). Gradjevinski fakultet | Rajakovic, Lj., Univerzitet u Beogradu, Beograd (Serbia). Tehnolosko-metalurski fakultet | Ljubisavljevic, D., Univerzitet u Beogradu, Beograd (Serbia). Gradjevinski fakultet
This study investigates removal efficiency of arsenic species from water on natural and modified sorbent materials. Selective removal of As(III) and As(V) from water was carried out with pure natural materials: bentonite, sepiolite, limonite, pyrolusite and zeolite. Materials most commonly used in water treatment, quartz sand and granular active carbon, were modified by iron coating in order to increase its sorption capacity. For the purpose of comparison, commercial material, granular ferry hydroxide (Everzit As), was investigated under the same conditions. The investigations were performed in batch experiments following the standard experimental methodology. Of all the tested natural materials zeolite exhibited significant sorption capacity: 100 microgram As(III, V)/g. Iron coating increased materials sorption capacity for at least 80%. Iron coated sand and iron coated activated carbon exhibited 340 and 430 microgram As(V)/g respectively.
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