Phytoremediation Potentials of Dieffenbachia bownanii and Eleusine indica for Cadmium, Lead, Zinc and Cobalt.
Journal Title: IOSR Journal of Applied Chemistry (IOSR-JAC) - Year 2018, Vol 11, Issue 7
Abstract
Solving the problem of heavy metal pollution and its effects on the biota have remained a frontline issue in the public health matters of developing , and even the developed countries. Non-edible African plants – Dieffenbachia bownanii and Eleusine indica – were used to study the absorption of Cadmium, Lead Zinc and Cobalt from soils inoculated with the metal ions. 0.1M, 0.5M and 1M solutions of the metal ions were used in the inoculation. The Leaves, stems and roots of Dieffenbachia bownanii and the shoots and roots of Eleusine indica were collected in the first instance at six weeks, and then, at ten weeks of planting. Flame photometry was used to determine the metal ion concentration in the plants’ parts. Lead was more absorbed by Dieffenbachia bownanii than did Eleusine indica, with the highest absorption of 1.71±0.015ppm in the former occurring in the roots. Absorption increased as the concentration of the inoculant solution increased, and also on moving from 6 weeks’ to 10 weeks’ samples. Cadmium was the least absorbed of the three metal ions, with a highest value of 0.59±0.015ppm in the stem of Dieffenbachia bownanii at 6 weeks. Zinc was more absorbed by Eleusine indica than did Dieffenbachia bownanii, with the highest absorption of 2.56±0.00ppm in the former occurring in shoots. Absorption increased as the concentration of the inoculants solution increased. Cobalt was most absorbed by Eleusine indica with the highest value of 2.53±0.00ppm found in the shoot. Phytotoxicity was shown in the plant at inoculants concentration above 0.1M, after 6 weeks. The tolerance, mean absorption and range, for Lead by Dieffenbachia bownanii show a good promise for its phytoremediation and recovery.
Authors and Affiliations
Anarado C. E, Mmeka O. P, Umedum N. L.
Keywords
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- EP ID EP414341
- DOI 10.9790/5736-1107026871.
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