Caracterização de escamas do peixe piau (Leporinus elongatus) e sua aplicação na remoção de Cu(II) de meio aquoso Characterization of the piau fish (Leporinus elongatus) scales and their application to remove Cu(II) from aqueous solutions

• Published in: Química nova Vol. 32; no. 1; pp. 134 - 138
• Main Authors: Elias de Barros Santos, Eunice Fragoso da Silva Vieira, Antonio Reinaldo Cestari, Ledjane Silva Barreto
• Format: Journal Article
• Language: English
• Published: Sociedade Brasileira de Química 01-01-2009
• Subjects: bioadsorbents; copper adsorption; fish scales
• ISSN: 0100-4042; 1678-7064
• DOI: 10.1590/S0100-40422009000100026

Characterization of fish scales of Leporinus elongatus and their application in the removal of Cu(II) from aqueous solutions are described. It was observed that the scales are mainly formed by hydroxyapatite and type I collagen. Adsorption of Cu(II) was performed using batch experiments at 25 0C. The ANOVA statistical results have shown that the Langmuir model was successful applied to determine the maximum adsorption capacity of 2.686 x10-4 mol g-1 and the Langmuir equilibrium parameter (b) of 168.8 L mol-1. The Langmuir separation parameter, R L, has shown favorable adsorption of Cu(II) on the scales.