Methylene blue adsorption onto modified lignin from sugar cane bagasse

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Published: Dec 29, 2007
DOI: https://doi.org/10.26850/1678-4618eqj.v32.4.2007.p63-70
Keywords:
methylene blue, lignin, adsorption

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Nelson Consolin-Filho
Embrapa, Instrumentação Agropecuária, São Carlos, Brasil.
Everaldo Carlos Venancio
Embrapa, Instrumentação Agropecuária, São Carlos, Brasil.
Marcilene Ferrari Barriquello
Embrapa, Instrumentação Agropecuária, São Carlos, Brasil.
Ana Adelina Winkler Hechenleitner
Universidade Estadual de Maringá, Departamento de Química, Maringá, Brasil.
Edgardo Afonso Gómez Pineda
Universidade Estadual de Maringá, Departamento de Química, Maringá, Brasil.

Abstract

The adsorption kinetics and equilibrium of methylene blue (MB) onto reticulated formic
lignin (RFL) from sugar cane bagasse was studied. The adsorption process is pH, temperature and ionic
strength (μ) dependent and obeys the Langmuir model. Conditions for higher adsorption rate and
capacity were determined. The faster adsorption (12 hours) and higher adsorption capacity (34.20
mg.g -1 ) were observed at pH = 5.8 (acetic acid-sodium acetate aqueous buffer), 50 °C and 0.1 ionic
strength. Under temperature (50 °C) control and occasional mechanical stirring it took from 1 to 10
days to reach the equilibrium.

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How to Cite
Consolin-Filho, N., Venancio, E. C., Barriquello, M. F., Hechenleitner, A. A. W., & Pineda, E. A. G. (2007). Methylene blue adsorption onto modified lignin from sugar cane bagasse. Eclética Química, 32(4), 63–70. https://doi.org/10.26850/1678-4618eqj.v32.4.2007.p63-70
Issue
Vol. 32 No. 4 (2007): Eclética Química
Section
Original articles
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