Gold, silver, and copper phytoextraction by helianthus annuus l. (sunflower) grown on mine tailings amended with plant growth regulators and cyanide

Abstract

Phytoextraction has been suggested as aviable technique for gold recovery from some areas of mine tailings and mineralized soils. Plant Growth Regulators have been used due to their potential to improve rates of metal phytoextraction. However, no studies have specifically described the efficacy of exogenous plant growth regulators on the process of gold phytoextraction for plants grown in mine tailings.