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Current-voltage curves for treating effluent containing HEDP : determination of the limiting current

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Current-voltage curves for treating effluent containing HEDP : determination of the limiting current

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Título Current-voltage curves for treating effluent containing HEDP : determination of the limiting current
Outro título Current-voltage curves for treating effluent containing 1-hydroxyethane-1,1-diphosphonic acid : determination of the limiting current
Autor Scarazzato, Tatiana
Buzzi, Daniella Cardoso
Bernardes, Andrea Moura
Tenório, Jorge Alberto Soares
Espinosa, Denise Crocce Romano
Abstract Membrane separation techniques have been explored for treating industrial effluents to allow water reuse and component recovery. In an electrodialysis system, concentration polarization causes undesirable alterations in the ionic transportation mechanism. The graphic construction of the current voltage curve is proposed for establishing the value of the limiting current density applied to the cell. The aim of this work was to determine the limiting current density in an electrodialysis bench stack, the function of which was the treatment of an electroplating effluent containing HEDP. For this, a system with five compartments was used with a working solution simulating the rinse waters of HEDP-based baths. The results demonstrated correlation between the regions defined by theory and the experimental data.
Contido em Brazilian journal of chemical engineering. São Paulo, SP. Vol. 32, no. 4 (Oct./Dec. 2015), p. 831-836
Assunto Eletrodiálise
Tratamento de efluentes
[en] Current-voltage curve
[en] Effluent treatment
[en] Electrodialysis
[en] HEDP
[en] Limiting current density
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/142306
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