Polymer Bulletin

, Volume 75, Issue 7, pp 3241–3265 | Cite as

Selective adsorption of gold and silver in bromine solutions by acetate cellulose composite membranes coated with polyaniline or polypyrrole

  • Salvador Rascón-Leon
  • María Mónica Castillo-Ortega
  • Irela Santos-Sauceda
  • Guillermo Tiburcio Munive
  • Dora Evelia Rodriguez-Felix
  • Teresa Del Castillo-Castro
  • José Carmelo Encinas
  • Jesús Leobardo Valenzuela-García
  • Jesús Manuel Quiroz-Castillo
  • Beatriz García-Gaitan
  • Pedro Jesús Herrera-Franco
  • Jesús Alvarez-Sanchez
  • José Zeferino Ramírez
  • Luis Sergio Quiroz-Castillo
Original Paper


This paper presents the selective adsorption of bromine-metallic complexes of Au and Ag on composite membranes, as well as the desorption process and redoping of the conducting polymers. The polyaniline (PANI) and polypyrrole (PPy) membranes exhibited relevant adsorption properties. 72% for gold and 98% for silver with PANI, 50% for gold and 97% for silver with PPy, in bromine complexes. The adsorption capabilities of the composite membranes were attributed to the ion exchange between the dopant and the AuBr 4 or AgBr 2 complexes. Both materials fitted to a Langmuir isotherm. PANI-based membranes reached 31.4% of gold and 54.4% of silver desorption whereas PPy-based membranes reached 54% of gold and 28.8% of silver. Redoping studies suggested the potential reuse of the PANI-based membranes at least for six cycles of the adsorption/desorption process. The preparation of cellulose acetate membranes modified with poly (acrylic acid) and triphenyl phosphate and coated with the conducting polymers, PANI or PPy was in accordance to our previously reported method. The composite membranes were characterized by FT-IR, scanning electron microscopy, electrical conductivity measurements, IV, mechanical tests, contact angle measurements, XRD and energy disperse spectroscopy. The novelty of the present work is the combination of electroconductive polymers, for the recovery of metals, and bromide as a leachate, less harmful than the traditionally used leachers.


Conducting polymers Adsorption Ion exchange Desorption Redoping 



The authors wish to thank their colleagues Angel Romero Acosta for his assistance in the analysis by atomic absorption spectroscopy, Silvia Burruel for obtaining the SEM images, Lorena Armenta and Diego Hernandez for her/his assistance in the analysis by FT-IR, Marcos Cota for his assistance in IV studies, Susana Meráz for her assistance in XRD studies. As well as Salvador Rascón-Leon and I. Santos-Sauceda thank CONACYT for the granted scholarship.


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Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • Salvador Rascón-Leon
    • 1
  • María Mónica Castillo-Ortega
    • 1
  • Irela Santos-Sauceda
    • 1
  • Guillermo Tiburcio Munive
    • 2
  • Dora Evelia Rodriguez-Felix
    • 1
  • Teresa Del Castillo-Castro
    • 1
  • José Carmelo Encinas
    • 1
  • Jesús Leobardo Valenzuela-García
    • 2
  • Jesús Manuel Quiroz-Castillo
    • 3
  • Beatriz García-Gaitan
    • 4
  • Pedro Jesús Herrera-Franco
    • 5
  • Jesús Alvarez-Sanchez
    • 6
  • José Zeferino Ramírez
    • 1
  • Luis Sergio Quiroz-Castillo
    • 7
  1. 1.Departamento de Investigación en Polímeros y MaterialesUniversidad de SonoraHermosilloMexico
  2. 2.Departamento de Ingeniería Química y MetalurgiaUniversidad de SonoraHermosilloMexico
  3. 3.Universidad Estatal de SonoraHermosilloMexico
  4. 4.División de Estudios de Posgrado e InvestigaciónInstituto Tecnológico de TolucaMetepecMexico
  5. 5.Centro de Investigación Científica de YucatánMéridaMexico
  6. 6.Departamento de Ciencias del Agua y Medio AmbienteInstituto Tecnológico de SonoraCiudad ObregónMexico
  7. 7.Department of Materials EngineeringUniversity of British ColumbiaVancouverCanada

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