Effect of heating on speciation of copper in Si/Al/Ca-based environmental matrices

Yu Ling Wei, Hsi Chih Wang, H. Paul Wang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

X-ray absorption spectroscopy is used to investigate the speciation of sorbed copper in heated fly ash. CuO and Cu(OH)2 are determined to be the principal copper species in the Cu-sorbing fly ash heated at 500 °C for 2 h. Heating the Cu-sorbing fly ash to 900 °C or 1100 °C can result in the formation of CuSO4, representing 41% and 32% of the total copper, respectively. Ash sintering and/or co-melting at 900 and 1100 °C occur, thereby triggering chemical reaction between CuO/Cu(OH)2 and sulfur compounds.

Original languageEnglish
Pages (from-to)1916-1920
Number of pages5
JournalRadiation Physics and Chemistry
Volume75
Issue number11 SPEC. ISS.
DOIs
Publication statusPublished - 2006 Nov

All Science Journal Classification (ASJC) codes

  • Radiation

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