Abstract
This research investigated the feasibility of the remediation of chromium contaminated soil through cold top ex-situ vitrification and the reuse of vitrified products as highway construction aggregates. There are more than two million tons of chromite ore residues from the chromate extraction manufacturing leftover in Hudson County, New Jersey. They contained both unleached hexavalent and un-oxidized trivalent chromium. Hexavalent chromium is well known as group A human carcinogen. It is also considered as an environmental and health hazard. Series of physical and chemical tests were conducted on soil samples collected from nine chromium contaminated sites. Results were analyzed for their suitability for vitrification. Approximately 2.5 kg of each soil was vitrified and the resulting vitrified product was subjected to additional chemical and physical tests. Sand and carbon were added to ensure vitrification and reduction. The toxicity characteristic leaching process (TCLP) test results confirmed the effectiveness of the treatment technology. The comparability of physical properties of vitrified chromium contaminated soils to the NJDOT (New Jersey Department of Transportation) specifications for aggregates indicated the reuse potential as a construction material.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 31-46 |
| Number of pages | 16 |
| Journal | Geotechnical Special Publication |
| Issue number | 59 |
| State | Published - 1996 |
All Science Journal Classification (ASJC) codes
- Civil and Structural Engineering
- Architecture
- Building and Construction
- Geotechnical Engineering and Engineering Geology