Phytoremediation of Heavy Metals with Creosote Plants

Phytoremediation of Heavy Metals with Creosote Plants
Inventors: Russell Chianelli, Jorge Gardea-Torresdey, William Mackay, Lori Polette, Kirk Tiemann
Patent No. 5,927,005

This patent relates generally to the field of phytoremediation. More particularly, This patent relates to methods of removing and possibly recovering a variety of contaminants such as, for example, metals, including heavy metals from soil using creosote (Larrea tridentata) plants.

Methods are described for the decontamination of soil containing heavy metals. In particular, these methods rely on phytoremediation using the plants of the species Larrea tridentata, the creosote bush. The methods are particularly directed at the decontamination of soil containing lead, copper, nickel and cadmium. The methods described herein are the first examples of phytoremediation using perennial plants which concentrate a high proportion of the scavenged metals in nonessential tissues, allowing the plants to be used continuously, rather than requiring repeated cycles of planting and harvesting entire plants in order to fully decontaminate the same area of land.

Issue Date: 07/27/1999
Application Date: 04/09/1997
Post Date: 03/02/2018

UTEP Docket No: 2000-088