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

Célia Maria Dias Ferreira, Pernille Erland Jensen, Lisbeth M. Ottosen, Alexandra Ribeiro

Research output: Contribution to journalJournal articleResearchpeer-review


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 languageEnglish
JournalEngineering Geology
Pages (from-to)339-347
Publication statusPublished - 2005

Fingerprint Dive into the research topics of 'Removal of selected heavy metals from MSW fly ash by the electrodialytic process'. Together they form a unique fingerprint.

Cite this