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| Abstract |
Year: 2004 Volume: 7 - Issue: 2
| Title: | Synthesis, characterization and determination of the metal ions adsorption capacity of cellulose modified with p-aminobenzoic groups |
| Author: | Castro Gustavo Rocha de ; Alcântara Ilton Luiz de ; Roldan Paulo dos Santos ; Bozano Dorotéia de Fátima ; Padilha Pedro de Magalhães ; Florentino Ariovaldo de Oliveira ; Rocha Julio Cesar |
| Abstract: | This paper describes the synthesis and characterization of p-aminobenzoic modified cellulose (Cell-PAB), as well as the separation and preconcentration of Cd(II), Cu(II), Ni(II), Pb(II) and Zn(II) ions from an aqueous medium using a Cell-PAB bath and the column technique. The quantity of p-aminobenzoic groups attached to the cellulose surface, i.e., 1.81±0.04 mmol/g, was determined by elemental analysis. The FT-IR spectra of Cell-PAB revealed characteristic bands of p-aminobenzoic groups, indicating the desired functionalization of the cellulose surface. The adsorptive capacities for the metals (Ns) Cd, Cu, Ni, Pb and Zn (Ns) were, respectively, 1.72 ± 0.02, 1.96 ± 0.02, 1.88 ± 0.04, 2.01 ± 0.03 and 1.93 ± 0.03 mmol/g. Metal separations performed in flow experiments using a column packed with 1 g of Cell-PAB and 5 mL of 1.5 mol/L HCl solution as eluent achieved an almost 100% metal ions recovery rate. |
| Journal: | Materials Research |
| Issn: | 15161439 |
| EIssn: | |
| Year: | 2004 |
| Volume: | 7 |
| Issue: | 2 |
| pages/rec.No: | 329-334 |
| Key words | modified cellulose ; separation of heavy metals ; preconcentration ; adsorption ; p-aminobenzoic groups |
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