Metal Phytoextraction: State of the Art and Perspectives

A. VASSILEV
Agricultural University, BG-4000 Plovdiv, Bulgaria

Abstract

VASSILEV, A., 2002. Metal phytoextraction: state of the art and perspectives. Bulg. J. Agric. Sci., 8: 125–140

Metal phytoextraction is a new emerging technology for low cost and environmentally friendly clean-up of metals-contaminated soils, based on the achievements of both plant and soil sciences. As a new technology, it still is at development stage and small-scale application, but some of its achievements may be approaching commercialisation. This review presents general information about the backgrounds of metal phytoextraction. The attention is focused on its advantages and limitations, metal hyperaccumulation phenomena, results obtained by natural and chemically-assisted approaches as well as the rationale for using of fast growing trees and industrial crops for phytoextraction. Further research needed and the perspectives for the future are also discussed.

Key words: phytoremediation, phytoextraction, heavy metals, hyperaccumulators, Salix