Extraction of Al(III), Cr(III) and Fe(III) from ethanolic medium by anilinepropylsilica xerogel

Química Nova

Costa, Tania M. H.¹  Universidade Regional Integrada, Erechim¹  Córdova, Manuela C.¹  Pavan, Flávio A.¹  Benvenutti, Edilson V.¹  Universidade Federal do Rio Grande do Sul, Porto Alegre¹  Jacques, Rosângela A.¹ 

关键词: sol-gel;    trivalent metal cations;    hybrid materials.;   

DOI  :  10.1590/S0100-40422004000500010

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

In this study, the preparation of the xerogel anilinepropylsilica is reported. The ability of the xerogel for extracting Al(III), Cr(III) and Fe(III) from ethanol was investigated at 25 ºC. The xerogel adsorption capacities were obtained from the adsorption isotherms by using the batch method. Flame atomic absorption spectrometry (FAAS) was used to estimate the concentration of metal ions in solution. The adsorption affinity follows the series Cr(III) > Fe(III) > Al(III) and the maximum adsorption capacities of the metal ions were 0.61, 0.52 and 0.43 mmol g-1, respectively.

【 授权许可】

Unknown