ANALYSIS OF SILVER´S ADSORPTION ON CALCINED VERDE-LODO CLAY

ANALYSIS OF SILVER´S ADSORPTION ON CALCINED VERDE-LODO CLAY

CANTUARIA, M. L.; ALMEIDA NETO, A. F.; NASCIMENTO, E. S.; VIEIRA, M. G. A.; SANTOS, O. A. A. DOS

Artigo:

The removal of heavy metals from wastewater has become an important subject for scientific research. Among the common methods, adsorption has shown good potential to treat contaminated effluents. In this study, the thermally treated clay called “Verde-lodo” was used in the adsorption of silver ions, a metal with wide industrial use and high commercial value. Firstly, the process kinetics was studied in different silver concentrations. The kinetic curves were adjusted by the following models: pseudo-first order, pseudo-second order, intra-particle diffusion, Boyd and mass transfer in the extern film models. The adsorbent before and after process was characterized by the techniques: BET and Helium Pycnometry.

The removal of heavy metals from wastewater has become an important subject for scientific research. Among the common methods, adsorption has shown good potential to treat contaminated effluents. In this study, the thermally treated clay called “Verde-lodo” was used in the adsorption of silver ions, a metal with wide industrial use and high commercial value. Firstly, the process kinetics was studied in different silver concentrations. The kinetic curves were adjusted by the following models: pseudo-first order, pseudo-second order, intra-particle diffusion, Boyd and mass transfer in the extern film models. The adsorbent before and after process was characterized by the techniques: BET and Helium Pycnometry.

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DOI: 10.5151/chemeng-cobeq2014-1965-16640-136808

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Como citar:

CANTUARIA, M. L.; ALMEIDA NETO, A. F. ; NASCIMENTO, E. S.; VIEIRA, M. G. A.; Onelia Aparecida Andreo dos Santos; "ANALYSIS OF SILVER´S ADSORPTION ON CALCINED VERDE-LODO CLAY", p-6393-6400. In: Anais do XX Congresso Brasileiro de Engenharia Química - COBEQ 2014 [= Blucher Chemical Engineering Proceedings, v.1, n.2]. São Paulo: Blucher, 2015.
ISSN 23591757, DOI 10.5151/chemeng-cobeq2014-1965-16640-136808