Effects of Curing Temperature on the Leachability of Lead Undergoing Solidification/Stabilization with Cement

✍ Scribed by Michael A. Janusa; Grant E. Heard; Jeffrey C. Bourgeois; Nicole M. Kliebert; April A. Landry

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 47 KB
• Volume: 60
• Category: Article
• ISSN: 0026-265X
• DOI: 10.1006/mchj.1998.1654

✦ Synopsis

Curing temperature was found to dramatically affect the amount of waste leached from a solidified waste/cement matrix between 2 and 40°C. Using lead nitrate as a model waste, samples cured for 7, 14, and 28 days at a cure temperature of 40°C leached very little lead (1-3 mg/liter), while at a cure temperature of 2°C samples leached approximately 25 times more lead (20 -90 mg/liter). The results indicate that curing temperature is a very crucial variable to consider when solidifying waste with cement if maximum stabilization is to be achieved.