2006
DOI: 10.1016/j.jcis.2006.06.052
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Use of statistical design of experiments to evaluate the sorption capacity of 7-amine-4-azaheptylsilica and 10-amine- 4-azadecylsilica for Cu(II), Pb(II), and Fe(III) adsorption

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Cited by 38 publications
(35 citation statements)
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“…The values of the Freundlich parameters, K F , 0.812 mg 1-1/n g -1 l 1/n , and n, 2.78, were comparable with the values obtained for other adsorbents (Ho and Ofojama, 2006;Meena et al, 2008;Garg et al, 2008b). Moreover, since n ranged from 1 to 10 it could be concluded that cadmium ions were favourably adsorbed by chestnut shell (Passos et al, 2006).…”
Section: +supporting
confidence: 82%
“…The values of the Freundlich parameters, K F , 0.812 mg 1-1/n g -1 l 1/n , and n, 2.78, were comparable with the values obtained for other adsorbents (Ho and Ofojama, 2006;Meena et al, 2008;Garg et al, 2008b). Moreover, since n ranged from 1 to 10 it could be concluded that cadmium ions were favourably adsorbed by chestnut shell (Passos et al, 2006).…”
Section: +supporting
confidence: 82%
“…The small number of macroporous structure is confirmed by the low specific surface area of the biosorbent (see Table 3). As the biosorbent material presents few numbers of macroporous structure, it adsorbed low amount of nitrogen, which led to a low BET surface area (Passos et al, 2006;Vaghetti et al, 2003;Arenas et al, 2004;Passos et al, 2008). Therefore the major contribution of the Ni (II), Pb (II), Cu (II) and Zn (II) uptake can be attributed to micro-and mesoporous structures (see Figure 1 (A-J)).…”
Section: Resultsmentioning
confidence: 99%
“…On the other hand, the amount of average pores ranging from 3.0E-03 to 30 µm is predominant. Therefore, this biosorbent can be considered mixtures of micro-and mesoporous materials (Passos et al, 2006;Vaghetti et al, 2003;Arenas et al, 2004;Passos et al, 2008). Figure 4 show the percent removal of Ni 2+ , Pb 2+ , Cu 2+ and Zn 2+ ions from the aqueous solution using Luffa cylindrica seeds and sponge mixture.…”
Section: Resultsmentioning
confidence: 99%
“…[110][111][112] Adicionalmente, é possível inserir nesses materiais grupos orgânicos quelantes, com sítios específicos, que possibilitam a adsorção de metais. Já foram desenvolvidos materiais adsorventes de metais pesados de interesse ambiental, tanto em meio aquoso 22,[113][114][115][116][117][118][119] como também em meio etanólico, 120,121 sendo que alguns apresentaram seletividade a cátions específicos como Cu(II) e Hg(II). [122][123][124] Além de adsorventes de metais, os materiais híbridos de classe II também têm sido usados na adsorção de compostos orgânicos de interesse ambiental.…”
Section: Exemplos De Aplicações De Materiais Híbridosunclassified