Fluoride removal from photovoltaic wastewater by aluminium electrocoagulation and characteristics of products

N. Drouiche*, NorEddine Ghaffour, S. Aoudj, M. Hecini, T. Ouslimane

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

34 Scopus citations

Abstract

In this work, treatment of synthetic fluoride-containing solutions by electrocoagulation (EC) method using aluminium electrodes has been studied in order to treat wastewater from photovoltaic wafers production industry. EC was investigated for applied potential (10-30V), electrolysis time and supporting electrolyte (NaCl) concentration (0-100 mg/L). Our results showed that with increasing applied potential and electrolysis time, the Al+3 dosage increases too, and thereby favouring the fluoride ions removal. It was also observed that defluoridation is dependant on the concentration of supporting electrolyte. Finally, X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy of X-rays and Fourier transform infrared spectroscopy were used to characterize the solid products formed by aluminium electrodes during the EC process.

Original languageEnglish (US)
Title of host publicationICheaP-9 - 9th International Conference on Chemical and Process Engineering
PublisherItalian Association of Chemical Engineering - AIDIC
Pages1651-1656
Number of pages6
Volume17
ISBN (Print)9788895608013
DOIs
StatePublished - Jan 1 2009
Event9th International Conference on Chemical and Process Engineering, ICheaP-9 - Rome, Italy
Duration: May 10 2009May 13 2009

Other

Other9th International Conference on Chemical and Process Engineering, ICheaP-9
CountryItaly
CityRome
Period05/10/0905/13/09

Keywords

  • Electrocoagulation fluoride removal
  • Fluoride
  • Sludge structure

ASJC Scopus subject areas

  • Chemical Engineering(all)

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