Vol. 28 Núm. 1 (2015): Revista ION
Artículos

Cinética de adsorción de Cr (VI) usando biomasas residuales modificadas químicamente en sistemas por lotes y continuo

Candelaria Tejada Tovar
Programa de Ingeniería Química. Facultad de Ingeniería. Universidad de Cartagena. Av del consulado # Calle 30 No. 48-152, Cartagena, Bolivar.
Angel Villabona Ortiz
Programa de Ingeniería Química. Facultad de Ingeniería. Universidad de Cartagena. Av del consulado # Calle 30 No. 48-152, Cartagena, Bolivar.
Erika Ruiz Paternina
Programa de Ingeniería Química. Facultad de Ingeniería. Universidad de Cartagena. Av del consulado # Calle 30 No. 48-152, Cartagena, Bolivar.

Publicado 2015-07-17

Palabras clave

  • Ácido Cítrico,
  • Adsorción,
  • Biomasa Residual;,
  • Cromo Hexavalente.

Cómo citar

Tejada Tovar, C., Villabona Ortiz, A., & Ruiz Paternina, E. (2015). Cinética de adsorción de Cr (VI) usando biomasas residuales modificadas químicamente en sistemas por lotes y continuo. Revista ION, 28(1). Recuperado a partir de https://revistas.uis.edu.co/index.php/revistaion/article/view/4952

Resumen

Se estudia la adsorción de Cr (VI) a partir de biomasa residual: bagazo de palma y cáscaras de ñame, además se estudia la modificación con ácido cítrico de las biomasas. La determinación del metal en solución fue llevada a cabo usando el método de la 1,5-difenilcarbazida. Del análisis FTIR se encontró que los grupos hidroxilo y carbonilo presentes en los adsorbentes son los de mayor contribución al proceso de remoción. Además, la modificación mejora la eficiencia del metal de acuerdo con la isoterma de Langmuir de 13 a 41 mg/g para el bagazo de palma, y de 22 a 26 mg/g para las cáscaras de ñame. Se establece además una mejora en el proceso al trabajar las biomasas en sistema continuo. De las condiciones óptimas de adsorción se determinó que el pH de 2 y el tamaño de partícula de 1mm son las que más favorecen el proceso, y el modelo de Elovich el que mejor lo describe.

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