Leaching behaviors of heavy metals in the solidification/stabilization matrix contained rejected fly ash blended and cement

Xiu Chen Qiao, Zong Shou Lin, Shi Cong Kou, Chi Sun Poon

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

By means of radial Dynamic Leaching Test (r-DLT), it was studied that the behaviors of heavy metal hydroxides in the solidified and stabilized (S/S) samples contained cement and rejected fly ash. It was found that the heavy metals transferred from the inner part of samples to the solid-liquid interface during the leaching test. However, the lead accumulated in the area closed to the solid-liquid interface and was not removed from the solid phase to the leachant in time. The copper accumulated in a wider area than that of the lead. The results also showed that the zinc was easy to leach without accumulation, but adding Ca(OH)2can retard this leaching.
Original languageEnglish
Pages (from-to)11-14
Number of pages4
JournalWuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology
Volume27
Issue number10
Publication statusPublished - 1 Oct 2005

Keywords

  • DLT
  • Leaching
  • Rejected fly ash
  • Solidification
  • Stabilization

ASJC Scopus subject areas

  • Management of Technology and Innovation

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