Recovery of zinc in phosphor wastes via electrokinetic treatments

M. Y. Yu, Hong-Paul Wang, C. Y. Chen, Tung Li Hsiung, Yu Ling Wei, H. S. Tai, K. C. Chiang

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7 Citations (Scopus)

Abstract

Speciation of zinc in phosphor wastes during electrokinetic treatments has been studied by in situ X-ray absorption near edge structure (XANES) spectroscopy in the present work. The least-square fits of the in situ XANES spectra show that the major zinc species in the phosphor waste are ZnS (77%), ZnO (10%), and Zn(OH) 2 (13%). During the electrokinetic treatment for 90 min, 25% of ZnS and 4% of ZnO are dissolved. About 42% of zinc is enriched on the cathode under the electric field (5 V/cm). Prolonging the electrokinetic treatment time to 4 h under the electric field of 5 V/cm, at least 80% of zinc in the phosphor waste can be recovered.

Original languageEnglish
Pages (from-to)211-213
Number of pages3
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume156-158
DOIs
Publication statusPublished - 2007 May 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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