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Competitive adsorption of silver and copper ions in bentonite clay

Grant number: 13/25212-0
Support type:Scholarships in Brazil - Master
Effective date (Start): March 01, 2014
Effective date (End): February 29, 2016
Field of knowledge:Engineering - Chemical Engineering - Chemical Process Industries
Principal researcher:Melissa Gurgel Adeodato Vieira
Grantee:Emanuelle Dantas de Freitas
Home Institution: Faculdade de Engenharia Química (FEQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil


This research topic of dissertation aims to study the removal of ions metallic silver and copper mixture using bentonite clay from aqueous solution in static system (bath) and dynamic (porous bed) systems, evaluating the parameters of removal efficiency and Mass Transfer Zone (MTZ) as well as the lifetime of the column through cycles adsorption / desorption of silver, aiming its concentration (recovery) for elution. The adsorbent and the clay-metal complex before and after cycles of adsorption / desorption will be characterized through X-ray diffraction analysis (XRD) and chemical analysis ray particle size (SEM and EDX), mercury porosimetry and helium pycnometry, BET (Determination of specific surface area, diameter, specific pore volume, adsorption isotherms), thermal analysis and infrared spectroscopy (FTIR). Mathematical models will be evaluated to describe the kinetic, thermodynamic equilibrium and behavior in fixed bed of clay to remove the noble metal. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PORTO, M. B.; PORTELA, D. G.; DE ALMEIDA NETO, A. F.. Temperature, current density and cobalt concentration effects on electrodeposited anticorrosive cobalt-tungsten alloys using factorial experiment design and ANOVA techniques. TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING, v. 97, n. 6, p. 305-311, . (13/25212-0)
FREITAS, E. D.; CARMO, A. C. R.; ALMEIDA NETO, A. F.; VIEIRA, M. G. A.. Binary adsorption of silver and copper on Verde-lodo bentonite: Kinetic and equilibrium study. APPLIED CLAY SCIENCE, v. 137, p. 69-76, . (13/25212-0, 13/00732-1)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
FREITAS, Emanuelle Dantas de. Competitive adsorption of silver and copper ions on bentonite clay. 2016. Master's Dissertation - Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Química Campinas, SP.

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