Electrochemical dissolution of aluminium in electrocoagulation experiments

Éva Fekete, Béla Lengyel, Tamás Cserfalvi, Tamás Pajkossy

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Six experiments are presented to highlight important features of aluminium dissolution when used in electrocoagulation procedure employed to remove oily contaminations from water. First, using a common oil-in-water emulsion: diluted milk, we show that the electrochemically generated coagulant ions are active only in the first few seconds following their generation—hence, the electrocoagulation cells’ construction should promote the mixing of the nascent Al colloid with the water phase. For this reason, the use of the narrow-gap cells is suggested. Second, in experiments with Al-Al electrode pairs and dilute, neutral, unbuffered, aqueous solutions we (i) estimate the maximum amount of Al dissolution on the cathode and (ii) show how the rate of Al dissolution changes with frequency if the cell voltage polarity is alternating.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalJournal of Solid State Electrochemistry
DOIs
Publication statusAccepted/In press - Apr 16 2016

Fingerprint

Aluminum
dissolving
Dissolution
aluminum
Water
cells
water
Coagulants
milk
Experiments
Colloids
Emulsions
emulsions
colloids
polarity
Oils
contamination
Cathodes
Contamination
oils

Keywords

  • Aluminium
  • Coagulation
  • Colloids
  • Dissolution
  • Specific charge
  • Water cleaning

ASJC Scopus subject areas

  • Electrochemistry
  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Materials Science(all)

Cite this

Electrochemical dissolution of aluminium in electrocoagulation experiments. / Fekete, Éva; Lengyel, Béla; Cserfalvi, Tamás; Pajkossy, Tamás.

In: Journal of Solid State Electrochemistry, 16.04.2016, p. 1-8.

Research output: Contribution to journalArticle

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