The adsorption of Violet Remazol 5R (VR 5) on wood sawdust modified with succinic anhydride (SSA) as a function of contact time, pH, and initial dye concentrations was investigated using a batch technique under ambient conditions. The SSA obtained was confirmed by IR spectroscopy, thermogravimetry and13C NMR, and degrees of substitution (DS) were calculated. A study on the effect of the pH on the adsorption of VR 5 showed that the optimum pH was 2.0. The interactions were assayed with respect to the pseudofirst-order and pseudo-second-order kinetic models, and were found to follow closely the pseudo-secondorder. The isotherm was adjusted to the Langmuir, the Freundlich and the Temkin sorption models. SSA is a promising material for the removal of dye textile from aqueous solutions, and under conditions studied the removal percentage achieved was 51.7%.
CITATION STYLE
Pinto, T. F., Bezerra, C. W. B., Silva, D. S. A., Da Silva Filho, E. C., Vieira, A. P., Airoldi, C., … Santana, S. A. A. (2016). Sawdust derivative for environmental application: Chemistry, functionalization and removal of textile dye from aqueous solution. Anais Da Academia Brasileira de Ciencias, 88(3), 1211–1220. https://doi.org/10.1590/0001-3765201620140656
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