XAS study of chromium recoverable from plating sludge

Yu Ling Wei, Lee How Hsu, H. Paul Wang, Kai Wen Chen

研究成果: Article同行評審

4 引文 斯高帕斯(Scopus)

摘要

Because global natural metal resources are depleting, this study aim to examine the chemical feasibility of recovering chromium as Cr(VI) from a Cr(OH)3-containing plating sludge through a co-heating procedure of the plating sludge with a incinerator fly ash that is rich in calcium hydroxide. The critical step in the process of recovering Cr from plating sludge would be to convert the water-insoluble Cr(OH)3 into water-soluble Cr(VI). Results from Cr K-edge X-ray absorption near edge spectrum (XANES) suggest that majority of the Cr is in the form of CaCrO4 after the co-heating procedure of plating sludge and the incinerator fly ash at different temperatures. Heating the mixture of the plating sludge and the incinerator fly ash results in an oxidation of Cr(OH)3 that is basically water insoluble to Cr(VI) which is water soluble, consequently more Cr(VI) can be extracted with water and recovered from the heated mixture than from the non-heated plating sludge.

原文English
頁(從 - 到)204-207
頁數4
期刊Journal of Electron Spectroscopy and Related Phenomena
156-158
DOIs
出版狀態Published - 2007 5月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 輻射
  • 原子與分子物理與光學
  • 凝聚態物理學
  • 光譜
  • 物理與理論化學

指紋

深入研究「XAS study of chromium recoverable from plating sludge」主題。共同形成了獨特的指紋。

引用此