ADSORTION ISOTERMAS OF ION Cu (II) IN HIGH DISORDER RETICULAR SILICATES

Authors

  • Julio Omar Prieto García Departamento Licenciatura en Química. Facultad de Química y Farmacia. Universidad Central “Marta Abreu” de las Villas. Carretera a Camajuaní km 5 ½, Santa Clara, Villa Clara, Cuba. https://orcid.org/0000-0002-9279-4412
  • Alfredo E. Curbelo Sánchez Departamento de Ingeniería Química. Facultad de Química y Farmacia. Universidad Central “Marta Abreu” de las Villas. Carretera a Camajuaní km 5 ½, Santa Clara, Villa Clara, Cuba https://orcid.org/0000-0002-9955-0437
  • Eugenio Martínez Albelo Departamento Licenciatura en Química. Facultad de Química y Farmacia. Universidad Central “Marta Abreu” de las Villas. Carretera a Camajuaní km 5 ½, Santa Clara, Villa Clara, Cuba https://orcid.org/0000-0002-3518-3500
  • Juan Alberto Ribalta Quesada Departamento Licenciatura en Química. Facultad de Química y Farmacia. Universidad Central “Marta Abreu” de las Villas. Carretera a Camajuaní km 5 ½, Santa Clara, Villa Clara, Cuba https://orcid.org/0000-0001-7870-3863
  • Mixary Enríquez García Departamento Licenciatura en Química. Facultad de Química y Farmacia. Universidad Central “Marta Abreu” de las Villas. Carretera a Camajuaní km 5 ½, Santa Clara, Villa Clara, Cuba https://orcid.org/0000-0002-0644-1160

Keywords:

Cu (II) adsorption, amorphous silicates, thermodynamics

Abstract

Introduction:
Amorphous silicates are used as heavy metal adsorbents in aqueous solution.
Objective:
To determine adsorption isotherms in a heterogeneous system constituted for a Cu (II) ions aqueous solution and magnesium, calcium, aluminum and zinc amorphous silicates.
Materials and methods:
The mechanism that governs Cu (II) ions adsorption process from aqueous solutions in static regime over various silicon-based products with zeolitic behavior water in its structure, obtained by a gelation process, is exposed. The ion adsorption process is carried out under certain conditions of acidity, temperature, Cu2 + ions concentration, particle diameter and interaction time. The solutions have a pH of 5.06 units. Stirring velocity was 300 rpm on an AGU-10 Bunsen mechanical stirrer at 25oC. A solution amount of 40 mL is mixed for 30 minutes with 0.2 g of corresponding metal silicate with the proposed stirring at 25 oC; it is then filtered, and the final concentration is determined by Atomic Absorption Spectroscopy.
Results and Discussion:
Langmuir's model for the adsorption isotherm has the best adjust for Cu (II) ions adsorption in aqueous solution.
Conclusions:
Calcium, zinc, magnesium and aluminum silicates are light materials and have moderate specific surface. They have Cu (II) ions moderate adsorption capacities in aqueous solution.

Downloads

Download data is not yet available.

Published

2020-08-24

How to Cite

Prieto García, J. O., Curbelo Sánchez, A. E., Martínez Albelo, E., Ribalta Quesada, J. A., & Enríquez García, M. (2020). ADSORTION ISOTERMAS OF ION Cu (II) IN HIGH DISORDER RETICULAR SILICATES. Centro Azúcar Journal, 47(3), 84–94. Retrieved from http://centroazucar.uclv.edu.cu/index.php/centro_azucar/article/view/592

Issue

Section

Original Articles

Most read articles by the same author(s)

1 2 > >>