Keywords
lignin
adsorption
How to Cite
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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