The effects of KI/Se(VI) molar ratio and initial concentration of Se(VI) on the reduction of Se(VI) to Se(IV) by KI

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

In this study, potassium iodide (KI) was found to be capable of reducing selenium(VI) to selenium(IV). When KI was added to Se(VI) solution, the Se(VI) concentration rapidly decreased with an increase in the KI/Se(VI) molar ratio. By using the potential-pH equilibrium diagram for the selenium/water system, we confirmed that Se(VI) reduced to Se(IV) because the potential of the solution shifted to the stable Se(IV) region upon the addition of KI. This reduction accompanies the oxidation of I- to I3-. The reduction of Se(VI) by KI was found to be effective for concentrated Se(VI) solutions.

Original languageEnglish
Pages (from-to)247-249
Number of pages3
JournalEnvironmental Chemistry Letters
Volume6
Issue number4
DOIs
Publication statusPublished - 2008

Keywords

  • Potassium iodide
  • Potential
  • Potential-pH equilibrium diagram for the selenium/water system
  • Reduction
  • Selenium(IV)
  • Selenium(VI)

ASJC Scopus subject areas

  • Environmental Chemistry

Fingerprint

Dive into the research topics of 'The effects of KI/Se(VI) molar ratio and initial concentration of Se(VI) on the reduction of Se(VI) to Se(IV) by KI'. Together they form a unique fingerprint.

Cite this