METHOD OF PRODUCING A NICKEL-AMMONIUM DOUBLE SULPHATE SALT FROM AND AMMONIUM NICKEL FROM PLANTS HYPERACCUMULATOR PLANTS

摘要

The present invention relates to the phytoextraction of heavy metals from the soil, and more particularly nickel in the form of a crystallized salt. The present invention includes, in particular, a process of producing a crystallized nickel salt from the ashes of a hyperaccumulator plant that accumulates metal elements nickel-containing, a use of the hyperaccumulator plant for the production of the crystallized nickel salt, and a purified composition of the crystallized nickel salt which is derived from the ashes of the hyperaccumulator plant.