Mine site metal sequestration with leonardite

This project studied a new method of sequestering heavy metals for mine site restoration.

Soil scientist, Dr. Katherine Stewart, and water chemist, Dr. Amelie Janin looked at how to prevent the transfer of heavy metals to plants and water by using leonardite, a naturally occurring carbon-rich mineral. The researchers predicted that heavy metals in mine tailings will bond to the leonardite instead of being absorbed by plants or moved by water. They also suggested that the leonardite will assist in revegetation of disturbed areas by retaining nutrients and moisture in the soil.


Wapaw Bay Resources Inc.


Natural Sciences and Engineering Research Council of Canada (NSERC)