Título
Efficient removal of crystal violet dye from aqueous solutions by vitreous tuff mineral
Autor
ALIEN BLANCO FLORES
ARTURO COLIN CRUZ
Edith Eriela Gutiérrez Segura
Víctor Sánchez Mendieta
Dora Alicia Solís Casados
Miguel Angel Garrudo Guirado
Rolando Batista González
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
Textural, structural and morphological characteristics of the vitreous tuff were determined by means of several physicochemical techniques. The nitrogen adsorption isotherm at 77K was fitted with the Brunnauer–Emmet–Teller model and together with the results of the average pore distribution showed a mesoporous material. Samples of vitreous tuff were used as adsorbent to study the removal of crystal violet from aqueous solution. The presence of -OH moieties in the material seems to be responsible for the removal of the dye showing that vitreous tuff can be used as an organic dye adsorbent material. The pseudo-second-order model was the best fit model for describing the sorption process of crystal violet; intraparticle diffusion being the controlling step in the process. The experimental adsorption isotherm was fitted with Langmuir, Freundlich and Langmuir–Freundlich models, showing better correlation with the second one. The adsorption capacity was 170.01 mg/g, being among the highest compared with other inorganic and organic common sorbent materials. The design of single stage of the adsorber can predict the behaviour to potential scale up. This mineral has a very good potential as an adsorbent material for organic dyes.
CONACYT scholarship [Grant No. 507915], Universidad Autónoma del Estado de México, project 3211–2012 and PROMEP/103.5/13/6535 project.
Editor
Environmental Technology
Fecha de publicación
23 de septiembre de 2013
Tipo de publicación
Artículo
Recurso de información
Fuente
0959-3330
Idioma
Inglés
Relación
Vol.;35
No.;12
Audiencia
Estudiantes
Investigadores
Repositorio Orígen
REPOSITORIO INSTITUCIONAL DE LA UAEM
Descargas
427