Revista: | Materials research |
Base de datos: | PERIÓDICA |
Número de sistema: | 000312699 |
ISSN: | 1516-1439 |
Autors: | Castro, Gustavo Rocha de1 Alcantara, Ilton Luiz de Roldan, Paulo dos Santos Bozano, Doroteia de Fatima Padilha, Pedro de Magalhaes Florentino, Ariovaldo de Oliveira Rocha, Julio Cesar |
Institucions: | 1Universidade Estadual Paulista "Julio de Mesquita Filho", Departamento de Quimica Analitica, Araraquara, Sao Paulo. Brasil |
Any: | 2004 |
Període: | Abr-Jun |
Volum: | 7 |
Número: | 2 |
Paginació: | 329-334 |
País: | Brasil |
Idioma: | Inglés |
Tipo de documento: | Nota breve o noticia |
Enfoque: | Experimental |
Resumen en inglés | 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 |
Disciplines | Química, Ingeniería |
Paraules clau: | Química analítica, Ingeniería metalúrgica, Separación, Metales pesados, Síntesis química, Celulosa, Espectrometría de absorción atómica |
Keyword: | Chemistry, Engineering, Analytical chemistry, Metallurgical engineering, Separation, Heavy metals, Chemical synthesis, Cellulose, Atomic absorption spectrometry |
Text complet: | Texto completo (Ver HTML) |