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In vitro phytoremediation potential of heavy metals by duck weed Lemna
polyrrhiza L. (Lemnaceae) and its combustion process as manure value
Journal of Environment & Biotechnology Research, Vol. 6, No. 1, Pages 82-87, January 2017
M.N. Abubacker, C. Sathya
ABSTRACT
In vitro experiments on chromium, copper, lead and zinc bioaccumulation using duck weed Lemna polyrrhiza L.
(Lemnaceae) was conducted with 5, 10 and 20 mg/100 mL concentrations for a period of 20 days. The SEM-EDX
elemental analysis was used to characterize the interaction between the metal and plant. The results revealed the
bioaccumulation of lead was high as 20.91%, followed by copper 9.71%, zinc 5.66% and chromium 1.86% was
observed. The combustion process of metal-loaded L. polyrrhiza biomass shows the total reduction of lead 1.72%,
zinc 1.47%, chromium 0.93% and copper 0.86%. The combusted biomass in the form of ash 10% + river sand passed
through 1 mm sieve, sterilized was supplemented to Brassica juncea pot culture, which revealed the healthy
growth and ensured the manure value of metal-loaded biomass.
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Journal of Environment and Biotechnology Research
Volume 6, Number 1, 2017, pp. 82-87