Buscar

 

RI UFLA (Universidade Federal de Lavras) >
DQI - Departamento de Química >
DQI - Artigos publicados em periódicos >

Por favor, utilize esse identificador para citar este item ou usar como link: http://repositorio.ufla.br/jspui/handle/1/11255

Título: Macauba palm (acrocomia aculeata) cake from biodiesel processing: an efficient and low cost substrate for the adsorption of dyes
Autor(es): Vieira, Sara S.
Magriotis, Zuy M.
Santos, Nadiene A.V.
Cardoso, Maria das Graças
Saczk, Adelir A.
Assunto: Macauba palm cake
Adsorption
Methylene blue
Congo red
Publicador: Elsevier Science
Data de publicação: 14-Jun-2016
Referência: VIEIRA, S. S. et al. Macauba palm (acrocomia aculeata) cake from biodiesel processing: an efficient and low cost substrate for the adsorption of dyes. Chemical Engineering Journal (1996), Lausanne, v. 183, n. 15, p. 152–161, Feb. 2012.
Abstract: The potential of natural and heat-treated Macauba palm cake as adsorbent for the removal of Methylene Blue (MB) and Congo Red (CR) from solution has been investigated. Equilibrium adsorption was attained in <7 h and the process was favored at pH 5.0 for MB and pH 6.5 for CR with an adsorbent (g):adsorbate (mL) ratio of 1:200 and an initial concentration of adsorbate of 25 mg L−1. The maximum adsorption capacities of the natural and heat-treated materials were, respectively, 25.80 and 32.30 mg g−1 for MB, and 32.00 and 20.30 mg g−1 for CR. The isotherm model proposed by Sips represented most adequately the adsorption of MB and CR. The adsorptions of the dyes were best described in terms of a pseudo second-order reaction. Thermodynamic parameters such as ΔHo, ΔSo and ΔGo were calculated. The adsorption process was found to be endothermic and spontaneous. Macauba palm cake is adequate for the removal of waste dye from industrial effluents by virtue of its abundance, low cost and efficiency of adsorption.
URI: http://www.sciencedirect.com/science/article/pii/S138589471101597X
http://repositorio.ufla.br/jspui/handle/1/11255
Idioma: en_US
Aparece nas coleções: DQI - Artigos publicados em periódicos

Arquivos neste Item:

Não há arquivos associados para este Item.

Itens protegidos por copyright, com todos os direitos reservados, Salvo indicação em contrário.


Mostrar estatísticas

 


DSpace Software Copyright © 2002-2007 MIT and Hewlett-Packard - Feedback