Abstract
The mechanism of zinc and mercury fixation by a cement/sodium silicate stabilization process has been assessed from leaching, scanning electron microscopy, X-ray diffraction and porosimetry studies. The results of these tests correlate closely and suggest the operation of two separate fixation mechanisms. The presence of zinc has a significant effect upon the hydration and final physical properties of the final product. Mercury and related metals which do not form precipitates at elevated pH levels are held in pore solution. The importance of microstructure in metal fixation and also metal leaching from the cementitious matrix has also been demonstrated. The calcium aluminate hydrate structure, ettringite, has been identified as to be related to the structural integrity of the solidified product.
| Original language | English |
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| Title of host publication | United States Environmental Protection Agency, Office of Research and Development, (Report) EPA |
| Publisher | EPA |
| Pages | 339-347 |
| Number of pages | 9 |
| Publication status | Published - 1 Dec 1985 |
| Externally published | Yes |
| Event | Proceedings - International Conference on New Frontiers for Hazardous Waste Management. - Pittsburgh, PA, United States Duration: 1 Dec 1985 → … |
Conference
| Conference | Proceedings - International Conference on New Frontiers for Hazardous Waste Management. |
|---|---|
| Country/Territory | United States |
| City | Pittsburgh, PA |
| Period | 1/12/85 → … |
ASJC Scopus subject areas
- General Engineering