Uso de amêndoas de baru (Dypterix alata) para remoção de Ni(ii) em etanol combustível

• Main Authors: Rafael Mosquetta, Gabriela C. Ribeiro, Rodrigo A. A. Munoz, Nívia M. M. Coelho, Luciana M. Coelho
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2011-01-01
• Series: Química Nova
• Subjects: Dypterix alata; nickel; ethanol
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000600002&lng=en&tlng=en

The present work describes the sorption potential of Dypterix alata (baru) for removal of Ni(II) in hydrous ethanol. Infrared spectroscopy was used for elucidating possible functional groups responsible for uptaking Ni(II). Sorption studies using Ni(II) standard solutions were carried out in batch experiments as functions of extraction time and pH solution. The Ni(II) was quantified before and after the removal experiments using Flame Atomic Absorption Spectrometry. Furthermore, based on adsorption studies and adsorption isotherms applied to the Langmuir and Freundlich models, it was possible to verify that D. alata presents a high adsorption capacity. The results show that D. alata can be used for removing Ni(II) in ethanol solutions.