Kinetic studies on the removal of heavy metal ions (ni(ii), cd(id and pb(ii)) ions from aqueous solution using sphenostylis stenocarpa (african yam bean) pod:- Loveday, Kate
ABSTRACT
The
potential of Sphenostylis stenocarpa (African yam bean) pod for adsorption of
Cd(II), Ni(II) and Pb(II) ions from aqueous solutions was determined by batch
process. The influences of parameters such as pH, contact time, metal ion
concentration on metal adsorption were investigated. It was observed that these
heavy metal ions showed maximum adsorption at pH 7.0. Kinetic modeling of
Cd(II), Ni(II) and Pb(II) ions using pseudo-first order yielded K; values of
-0.001gmgmin', -0.014gmgmin" and 0.026gmgmin" respectively, and for
the pseudo-second order, the K; values of Cd(l!), Ni(II) and Pb(II) ions are
1.2181x10°,0.1333 and 2.0056x10° gmgmin' respectively. The adsorption capacity
(qe) values are 55.556, 50.00 and 52.6316mg/g for Ni(II), Cd(II) and Pb(II)
ions respectively. Kinetic modeling of the results shows that the pseudo-second
order model best describes the process and mechanism of adsorption shows that
the process was film diffusion controlled for Cd (II) ions but intra-particle
diffusion controlled for Ni(II) and Pb(II) ions. The affinity of the adsorbent
for the adsorbate for the metal ions also follows the trend Ni(ll) > Pb(II)
> Cd(ll). This will serve as parameters to consider in the design of
treatment plant for these heavy metals detoxification using Sphenostylis
stenocarpa {African yam bean) pod.
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KATE, C (2024). Kinetic studies on the removal of heavy metal ions (ni(ii), cd(id and pb(ii)) ions from aqueous solution using sphenostylis stenocarpa (african yam bean) pod:- Loveday, Kate. Repository.mouau.edu.ng: Retrieved Apr 27, 2024, from https://repository.mouau.edu.ng/work/view/kinetic-studies-on-the-removal-of-heavy-metal-ions-niii-cdid-and-pbii-ions-from-aqueous-solution-using-sphenostylis-stenocarpa-african-yam-bean-pod-loveday-kate-7-2
CHIAMAKA, KATE. "Kinetic studies on the removal of heavy metal ions (ni(ii), cd(id and pb(ii)) ions from aqueous solution using sphenostylis stenocarpa (african yam bean) pod:- Loveday, Kate" Repository.mouau.edu.ng. Repository.mouau.edu.ng, 27 Mar. 2024, https://repository.mouau.edu.ng/work/view/kinetic-studies-on-the-removal-of-heavy-metal-ions-niii-cdid-and-pbii-ions-from-aqueous-solution-using-sphenostylis-stenocarpa-african-yam-bean-pod-loveday-kate-7-2. Accessed 27 Apr. 2024.
CHIAMAKA, KATE. "Kinetic studies on the removal of heavy metal ions (ni(ii), cd(id and pb(ii)) ions from aqueous solution using sphenostylis stenocarpa (african yam bean) pod:- Loveday, Kate". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 27 Mar. 2024. Web. 27 Apr. 2024. < https://repository.mouau.edu.ng/work/view/kinetic-studies-on-the-removal-of-heavy-metal-ions-niii-cdid-and-pbii-ions-from-aqueous-solution-using-sphenostylis-stenocarpa-african-yam-bean-pod-loveday-kate-7-2 >.
CHIAMAKA, KATE. "Kinetic studies on the removal of heavy metal ions (ni(ii), cd(id and pb(ii)) ions from aqueous solution using sphenostylis stenocarpa (african yam bean) pod:- Loveday, Kate" Repository.mouau.edu.ng (2024). Accessed 27 Apr. 2024. https://repository.mouau.edu.ng/work/view/kinetic-studies-on-the-removal-of-heavy-metal-ions-niii-cdid-and-pbii-ions-from-aqueous-solution-using-sphenostylis-stenocarpa-african-yam-bean-pod-loveday-kate-7-2