Removal of selected heavy metals from MSW fly ash by the electrodialytic process

Célia Ferreira; Pernille Jensen; Lisbeth Ottosen; Alexandra Ribeiro

doi:10.1016/j.enggeo.2004.07.024

Removal of selected heavy metals from MSW fly ash by the electrodialytic process

Célia Ferreira, Pernille Jensen, Lisbeth Ottosen, Alexandra Ribeiro

DCEA - Departamento de Ciências e Engenharia do Ambiente

Research output: Contribution to journal › Conference article › peer-review

60 Citations (Scopus)

Abstract

This paper aims to assess the applicability of the electrodialytic remediation technique for the removal of zinc, lead, copper and cadmium from municipal solid waste (MSW) incinerator fly ash. A broad range of experimental conditions were studied including current densities, remediation times, use of assisting agents and cell design. Several operational problems were identified during the electrodialytic experiments, among which are formation of precipitates, dryness of sample and partial dissolution of sample creating preferential pathways for the electric current. These problems may explain the low remediation efficiencies obtained. Comparison between experiments showed that generally the use of Na-gluconate as assisting agent leads to better results than distilled water. Increasing the concentration of the assisting agent also results in higher removals.

Original language	English
Pages (from-to)	339-347
Number of pages	9
Journal	Engineering Geology
Volume	77
Issue number	3-4(SI)
DOIs	https://doi.org/10.1016/j.enggeo.2004.07.024
Publication status	Published - 1 Mar 2005
Event	4th International Symposium on Electrokinetic Remediation (EREM) - Mol, Belgium Duration: 14 May 2003 → 16 May 2003

Keywords

Electrodialytic treatment
Heavy metals
MSW fly ash

Access to Document

10.1016/j.enggeo.2004.07.024Licence: CC BY-NC-ND

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Cite this

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title = "Removal of selected heavy metals from MSW fly ash by the electrodialytic process",

abstract = "This paper aims to assess the applicability of the electrodialytic remediation technique for the removal of zinc, lead, copper and cadmium from municipal solid waste (MSW) incinerator fly ash. A broad range of experimental conditions were studied including current densities, remediation times, use of assisting agents and cell design. Several operational problems were identified during the electrodialytic experiments, among which are formation of precipitates, dryness of sample and partial dissolution of sample creating preferential pathways for the electric current. These problems may explain the low remediation efficiencies obtained. Comparison between experiments showed that generally the use of Na-gluconate as assisting agent leads to better results than distilled water. Increasing the concentration of the assisting agent also results in higher removals.",

keywords = "Electrodialytic treatment, Heavy metals, MSW fly ash",

author = "C{\'e}lia Ferreira and Pernille Jensen and Lisbeth Ottosen and Alexandra Ribeiro",

note = "This work was partially funded by the Portuguese Project POCTI/AGG/45073/2002, approved by FCT and POCTI with FEDER funds.; 4th International Symposium on Electrokinetic Remediation (EREM) ; Conference date: 14-05-2003 Through 16-05-2003",

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T1 - Removal of selected heavy metals from MSW fly ash by the electrodialytic process

AU - Ferreira, Célia

AU - Jensen, Pernille

AU - Ottosen, Lisbeth

AU - Ribeiro, Alexandra

N1 - This work was partially funded by the Portuguese Project POCTI/AGG/45073/2002, approved by FCT and POCTI with FEDER funds.

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N2 - This paper aims to assess the applicability of the electrodialytic remediation technique for the removal of zinc, lead, copper and cadmium from municipal solid waste (MSW) incinerator fly ash. A broad range of experimental conditions were studied including current densities, remediation times, use of assisting agents and cell design. Several operational problems were identified during the electrodialytic experiments, among which are formation of precipitates, dryness of sample and partial dissolution of sample creating preferential pathways for the electric current. These problems may explain the low remediation efficiencies obtained. Comparison between experiments showed that generally the use of Na-gluconate as assisting agent leads to better results than distilled water. Increasing the concentration of the assisting agent also results in higher removals.

AB - This paper aims to assess the applicability of the electrodialytic remediation technique for the removal of zinc, lead, copper and cadmium from municipal solid waste (MSW) incinerator fly ash. A broad range of experimental conditions were studied including current densities, remediation times, use of assisting agents and cell design. Several operational problems were identified during the electrodialytic experiments, among which are formation of precipitates, dryness of sample and partial dissolution of sample creating preferential pathways for the electric current. These problems may explain the low remediation efficiencies obtained. Comparison between experiments showed that generally the use of Na-gluconate as assisting agent leads to better results than distilled water. Increasing the concentration of the assisting agent also results in higher removals.

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