High efficiency phytoextraction of barium using Amaranthus viridis l.

Abstract

Heavy metal pollutants in the environment are emerging global concern. Barium is one of the heavy metal abundantly used in the manufacture of firecrackers and match industries. This work is aim to eradicate barium from these industrial sites; the new-flanged phytoextraction technology is used to mitigate the metal pollution through hyperaccumulators. Plant used in phytoextraction should accumulate and translocate specific pollutants especially heavy metals. This work aimsto assess the tolerance mechanism of Amaranthusviridis L. a selective native hyperaccumulator under barium chloridestress. Morphometric, biochemical, enzymatic activity, accumulation, translocation and mobility of bariumform soil to root and leaves were studied in co-cultivated hyperaccumulator (Amaranthusviridis) and hypoaccumulator (Abelmuscusesculentus) at various concentration levels of barium. Amaranthusviridis accumulated fourfold tofivefold barium in roots, shoots and leaves than AbelmuscusesculentusL.This is well understand that Amaranthusviridis showinghigher accumulation of barium, more translocation of bariumfrom root to shoot and good mobility. The mobilityof bariumwas increased form level 1 to level 3.It was revealed that the accumulation of bariumwas more in root and shoot of Amaranthusviridis. It is inferred from the present study that A.esculentusis a hypoaccumulator and is sensitive to barium. When co-cultivated with Amaranthusviridisshowing less of metal toxicity because Amaranthusviridisbeing hyperaccumulator of barium, accumulate more metal and save Abelmuscusesculentus.It is strongly suggest that the hyperaccumulator Amaranthus viridisL. should grownin the barium polluted sites and make the environment sans heavy metal pollution.