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

Quimica nova

Costa, Tania M. H.¹  Pavan, Flávio A.¹  Benvenutti, Edilson V.¹  Córdova, Manuela C.²  Jacques, Rosângela A.² 

[1] Universidade Federal do Rio Grande do Sul, Porto Alegre;Universidade Regional Integrada, Erechim

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

【 授权许可】

CC BY