Evaluation of the adsorption capacity of orange 16 reactive dye for chitosan

Authors

  • Irene Yukiko Kimura UEM Author
  • Valfredo Tadeu de Fávere UFSC Author
  • Mauro César Marghetti Laranjeira UFSC Author
  • Atche Josué UFSC Author
  • Amauri do Nascimento UFPG Author

DOI:

https://doi.org/10.4025/actascitechnol.v22i0.3003

Keywords:

adsorção, corante reativo e quitosana

Abstract

Chitosan (87.2% NH2) was employed as adsorbent for the orange 16 reactive dye in an aqueous medium. The dye is used in textile dyeing. Isotherms of adsorption were determined according to variations of pH and the initial concentration of the dye. Results of adsorption experiments were analyzed with Langmuir isotherm and indicated an increase of adsorption capacity with pH decrease. This effect is attributed to the increase of -NH3+ groups of the chitosan in acid medium, producing a strong interaction between the cationic group from the chitosan and -SO3- group of the dye. Values for qm were 1613 mg/g (pH 2.0) and 310 mg/g (pH 10.0).

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Author Biography

  • Irene Yukiko Kimura, UEM
    possui graduação em Licenciatura Plena Em Quí­mica pela Universidade Estadual de Maringá (1983), graduação em Bacharelado Em Quí­mica pela Universidade Estadual de Maringá (1984) e doutorado em Quí­mica pela Universidade Federal de Santa Catarina (2001). Atualmente é professor adjunto da Universidade Estadual de Maringá. Tem experiência na área de Quí­mica, com ênfase em Separação, atuando principalmente nos seguintes temas: quitosana, adsorção, corantes reativos e efluente têxtilCurrí­culo Lattes

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Published

2008-05-13

Issue

Vol. 22 (2000)

Section

Chemistry

License

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How to Cite

Evaluation of the adsorption capacity of orange 16 reactive dye for chitosan. (2008). Acta Scientiarum. Technology, 22, 1161-1166. https://doi.org/10.4025/actascitechnol.v22i0.3003

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