Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/64957
Type: Artigo de periódico
Title: Epicarp and Mesocarp of Babassu (Orbignya speciosa): Characterization and Application in Copper Phtalocyanine Dye Removal
Author: Vieira, AP
Santana, SAA
Bezerra, CWB
Silva, HAS
Chaves, JAP
de Melo, JCP
da Silva, EC
Airoldi, C
Abstract: The mesocarp and epicarp components of the babassu palm tree were applied as novel alternative biosorbents for copper phtalocyanine textile dye removal from aqueous solutions. The natural biopolymers were characterized by elemental analyses, solid state (13)C NMR, infrared spectroscopy, thermogravimetric analysis and X-ray diffractometry. Results demonstrated that the compositions of the mesocarp and epicarp are similar to those of other lignocellulosic materials, and that they were very effective for removal of the textile dye Turquoise Remazol. A pseudo second-order kinetic model resulted in the best fit with experimental data for both epicarp and mesocarp (R(2) = 0.999), providing rate constants of sorption, k(2), of 0.31 and 1.43 g mg(-1) min(-1), respectively. The Langmuir and Freundlich isotherm models were employed for adsorption analysis of the experimental data in their linearized forms. The second model resulted in the better fit for Turquoise Remazol dye, which presented maximum adsorption of 1.44 and 2.38 mg g(-1) at pH 6.0 for mesocarp and epicarp, respectively.
Subject: mesocarp
epicarp
babassu coconut
adsorption
dye textile
Country: Brasil
Editor: Soc Brasileira Quimica
Rights: aberto
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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