Adsorption of cationic dye on a biohybrid SiO2-alginate

In this work, a biohybrid material based on SiO2-alginate was obtained and its properties of adsorption evaluated using methylene blue as a model dye. The experimental results showed that the biohybrid SiO2-alginate has a higher adsorption ability compared to their base compounds (SiO2 and alginate)...

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Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 45; no. 1
Main Authors Barrón Zambrano, J A, López-Pérez, A J, A Ávila Ortega, D Muñoz Rodríguez, C Carrera Figueiras
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.01.2013
Subjects
Adsorption
Alginates
Cationic dyes
Dyes
Methylene blue
Silicon dioxide
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Summary:In this work, a biohybrid material based on SiO2-alginate was obtained and its properties of adsorption evaluated using methylene blue as a model dye. The experimental results showed that the biohybrid SiO2-alginate has a higher adsorption ability compared to their base compounds (SiO2 and alginate). Methylene blue adsorption is pH dependent, resulting in a maximum adsorption at pH 8. The sorption kinetics rate is similar to SiO2. Kinetic data were fitted to a model of pseudosecond order. The experimental isotherms fit well the Langmuir model.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/45/1/012018