Capability of Ludwigia adcendens and Ludwigia grandiflora as Cd (cadmium) Phytoremediator Fida Rachmadiarti, Marátus Sholikah
Universitas Negeri Surabaya
Abstract
Ludwigia adcendens and Ludwigia grandiflora are water weeds rapidly grow and disperse. This plant is mainly found in ponds, swamps, and polluted water channels. This means that both plants are capable of absorbing organic and inorganic waste, including heavy metals as Cd (cadmium). The objective of the research to describe capability of L. grandiflora and L. adcendens in Cd Solution at various concentration as individual species or as consortium. These plants were acclimatized first in hydroponic for 14 days, then moved to medium with varying treatments; only L. grandiflora, only L. adcendens and combination of both species at different Cd concentration (0, 5, 10, and 15 ppm). Level of Cd was analyzed at 7th and 14th day using Atomic Absorption Spectrophotometer (AAS), while wet biomass of each group was compared. Data collected was analyzed statistically. Capability of L. grandiflora and L. adcendens in Cd Solution from low to high was found to be L. grandiflora, L. adcendens > consortium of both species, in which bioconcentration factor (BCF) > 1 and translocation factor (TF) < 1. Concentration of Cd was also found to be higher in the roots than in leaves. Colour of leaves also supported these plants as Cd phytoremediator; plants with higher Cd accumulation had yellow leaves compared to plants accumulated lower Cd level.
Keywords: Ludwigia adcendens, Ludwigia grandiflora, BCF, TF, and Cd metal
