Removal of dyes by lignocellulose adsorbents originating from biodiesel production
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
---|---|
Data(s) |
15/05/2015
15/05/2015
2014
|
Resumo |
In this study, use was made of tucumã cake, in natura (TCN) and thermally treated (TCT), as potential alternative adsorbents for the adsorption of cationic and anionic dyes. The effects of the parameters: contact time, adsorbent: adsorbate mass ratio, and initial concentration of dye were analyzed. The adsorption isotherms were established from optimized adsorption parameters. The best conditions for adsorption were: equilibrium time of 7 h, concentration of 25 mg L 1 and ratio of 1:200 for the methylene blue dye; and pH 6.5, concentration of 25 mg L 1 and ratio of 1:200 for the congo red dye. The adsorption process was best represented by the Dubinin–Radushkevich and Sips isotherms. The kinetics of adsorption of the dyes were best described by the pseudo-second-order kinetic and Elovich models. TCT showed the best maximum adsorption capacity (Qm) for the methylene blue dye (63.92 mg g 1 ). |
Formato |
2199-2210 |
Identificador |
http://www.sciencedirect.com/science/article/pii/S2213343714002061 Journal of Environmental Chemical Engineering, v. 2, n. 4, p. 2199-2210, 2014. 2213-3437 http://hdl.handle.net/11449/123530 http://dx.doi.org/10.1016/j.jece.2014.09.012 0072173018005712 |
Idioma(s) |
eng |
Relação |
Journal of Environmental Chemical Engineering |
Direitos |
closedAccess |
Palavras-Chave | #Tucumã cake #Adsorption #Biosorbent #Methylene blue #Congo red |
Tipo |
info:eu-repo/semantics/article |