ARCHIVES
VOL. 5, ISSUE 4 (2021)
Evaluation of the phytoremediation potential of Sacciolepis africana in the treatment of Ni-contaminated aqueous system
Authors
Odediran Oluwagbemisola, Lajide Labunmi
Abstract
Purple swamp grass (Sacciolepis africana) was evaluated to determine its effectiveness in the treatment of nickel-contaminated aqueous system. A phytotoxicity test was conducted with Sacciolepis africana grown in sediments to which varied dilute concentrations of 100 mg/l, 200 mg/l, and 300 mg/l were added and a control set-up without nickel solution in simulation of the natural habitat. Samples were taken at 3 days interval for 15 days. Ni concentration in water, sand medium and plant tissues were determined using Atomic Absorption Spectrophotometer (AAS). The hydrophytes by physical observation were seen to show chlorosis and necrosis as a result of the high concentration of Ni possibly interfering with iron uptake. The results showed that as at day 3, 90.732%, 81.824% and 78.778% of Ni had been removed from the water medium and Ni concentration at the end of the experiment finally decreased up to 99.823%, 99.752%, 99.683% for 100 mg/l, 200 mg/l and 300 mg/l respectively with the residual concentration 0.177±0.04 mg/l, 0.497±0.05 mg/l, 0.952±0.03 mg/l. The results showed significant difference (P<0.05) with that of the control. The sediment adsorbed high amount of Ni, this can be related to its high electrical conductivity value. Correlations between the concentration in the water medium and the plant stem and leaves were obtained. There was also correlation between nickel concentration in the sediment and roots. Bioconcentration factors were greater than 1 but less than 1000 and translocation factors were less than 1 indicating that the hydrophyte was not bioaccumulative, it excluded the metal from its tissues but preferentially accumulated them in the root compartment, thus suggesting it to be good for phytostabilization purposes.
Download
Pages:39-43
How to cite this article:
Odediran Oluwagbemisola, Lajide Labunmi "Evaluation of the phytoremediation potential of <em>Sacciolepis africana</em> in the treatment of Ni-contaminated aqueous system ". International Journal of Chemical Science, Vol 5, Issue 4, 2021, Pages 39-43
Download Author Certificate
Please enter the email address corresponding to this article submission to download your certificate.