Design of an adsorbent employing activated carbon fiber to remove lead
AUTOR(ES)
Cárdenas-López, C., Camargo, G., Giraldo, L., Moreno-Piraján, J.C.
FONTE
Eclética Química
DATA DE PUBLICAÇÃO
2007
RESUMO
Zorflex® activated carbon fibers (ACF), reference FM100 198B, are used before and after an oxidizing procedure with H3PO4 to study the adsorption of Pb2+. The point of zero charge was determined for the modified and unmodified fiber giving values of 2.3 and 4.3, respectively. After oxidizing the ACF, the fiber showed to have a greater Pb2+ adsorption capacity in comparison with the unmodified fiber, which is related with the acid sites increase, where lead was mainly adsorbed. Determination of the BET area was carried out by nitrogen physisorption at 77K. ACFs presented superficial areas between 1000 and 1500 m²/g showing mostly, a microporous structure. The preliminary design of an adsorbent using the modified fiber is presented where the fiber superior physicochemical properties over the unmodified one are observed.
Documentos Relacionados
- Pd-Impregnated activated carbon and treatment acid to remove sulfur and nitrogen from diesel
- Production and Characterization of Activated Carbon Fiber from Textile PAN Fiber
- Removal of lead from aqueous solution using waste tire rubber ash as an adsorbent
- Brazilian natural fiber (jute) as raw material for activated carbon production
- Strontium Oxide Decorated Iron Oxide Activated Carbon Nanocomposite: A New Adsorbent for Removal of Nitrate from Well Water