Mechanisms of boron removal with electrocoagulation

Jia-Qian Jiang*, Y. Xu, K. Quill, J. Simon, K. Shettle

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

This study aims to explore the mechanisms of boron removal by electrocoagulation (EC). The results demonstrate that adsorption and precipitation of boron by Al flocs are dominant mechanisms in boron removal using EC. The Al flocs that result from the EC process are found to be mainly composed of polymeric Al13 polymers (43%) and to have a long-lasting positive charge. These characteristics of the flocs contribute to the high levels of boron removal observed using EC. The maximum boron adsorption of the Al flocs is 200 mg g?1 and the solubility product constant (K sp), which represents the boron precipitate Al(OH)2BO 2•nH2O, is 2.6 × 10-40 (at 20°C).

Original languageEnglish
Pages (from-to)350-354
Number of pages5
JournalEnvironmental Chemistry
Volume3
Issue number5
DOIs
Publication statusPublished - 26 Oct 2006
Externally publishedYes

Keywords

  • Adsorption
  • Boron removal
  • Coagulation
  • Electrocoagulation
  • Precipitation
  • Waste water treatment

ASJC Scopus subject areas

  • Chemistry (miscellaneous)
  • Environmental Chemistry
  • Geochemistry and Petrology

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