Artículos de revistas
Characterization Of Oreochromis Niloticus Fish Scales And Assessment Of Their Potential On The Adsorption Of Reactive Blue 5g Dye
Registro en:
Characterization Of Oreochromis Niloticus Fish Scales And Assessment Of Their Potential On The Adsorption Of Reactive Blue 5g Dye. Elsevier Science Bv, v. 482, p. 693-701 OCT-2015.
0927-7757
WOS:000360411300084
10.1016/j.colsurfa.2015.05.057
Autor
Ribeiro
Caroline; Scheufele
Fabiano Bisinella; Espinoza-Quinones
Fernando Rodolfo; Modenes
Aparecido Nivaldo; Carlos da Silva
Meuris Gurgel; Adeodato Vieira
Melissa Gurgel; Borba
Carlos Eduardo
Institución
Resumen
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) In this work, the physicochemical and morphological characterization of fish scales and an evaluation of their adsorption of reactive blue 5G (RB5G) dye were performed. The analysis of N-2 physisorption, pH(ZPC), SEM-EDX, XRD and FTIR was carried out. Adsorption experiments were performed in batch and closed system. From N-2 physisorption studies, we obtained values of the specific surface area, total pore volume and average pore diameter as 2.6 m(2) g(-1), 0.003 cm(3) g(-1) and 20.6 angstrom, respectively. The pHZPC was estimated as 7.6. The presence of hydroxyapatite and collagen fibres in the structure of the scales was observed in SEM-EDX, XRD and FTIR results. Furthermore, leaching of mineral phase mainly occurs during the adsorption process in acid medium (pH 2), although, in neutral and alkaline media (pH 7 and 10), it is less pronounced. The FTIR spectra indicate that the amides functional groups from collagen structure are responsible for RB5G dye adsorption. Comparing the RB5G dye uptake at different initial pH values (2, 7, 10), a higher capacity was achieved in acidic medium. The equilibrium adsorption data of RB5G dye at pH 2 showed a maximum capacity of 241.20 mg g(-1) with fast kinetics. (C) 2015 Elsevier B.V. All rights reserved. 482
693 701 Araucaria Foundation Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)