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Effect of placement angles on wireless electrocoagulation for bipolar aluminum electrodes

  • Zhenlian Qi
  • , Jinna Zhang
  • , Shijie You*
  • *Corresponding author for this work
  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

We in our previous study reported the wireless electrocoagulation (WEC) based on bipolar electrochemistry for water purification. One of the most important advantages of WEC is the omission of ohmic connection between bipolar electrode (BPE) and power supply, and thus the electrochemical reactions on BPE are driven by electric field in solution induced by driving electrodes. In this study, the impact of placement angle of bipolar aluminum electrode on WEC was investigated to provide a detailed analysis on the correlations between the bipolar electrode placement angle and bipolar electrocoagulation reactions. The results showed that the WEC cell with a horizontal BPE placed at 0° produced the maximum dissolved aluminum coagulant, accounting for 71.6 % higher than that with a vertical one placed at 90°. Moreover, the finite element simulations of current and potential distribution were carried out along the surface of BPE at different placement angles, revealing the mechanism of different BPE placement angles on aluminum dissolution rates in WEC system.

Original languageEnglish
Article number9
JournalFrontiers of Environmental Science and Engineering
Volume12
Issue number3
DOIs
StatePublished - 1 Jun 2018

Keywords

  • Bipolar electrochemistry
  • Placement angle
  • Wireless electrocoagulation

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