Abstract
A comparison was made on the sorption efficiency of an unmodified(UGC)
and chemically modified(TGC) guinea corn waste used to remove Pb2+
from aqueous solutions. The removal efficiencies of the two adsorbents
were: 71.2% and 73.3% for the UGC and TGC adsorbents respectively.
Also an analysis of six kinetic models: pseudo-second order, pseudo-first
order, Elovich, intraparticle diffusivity, mass transfer and intraparticle diffusion equations was also used to characterize the metal ion transport
mechanism. The sorption of Pb2+ was found to best fit the pseudo-second
order equation. Thereby indicating that the sorption of Pb2+ followed a
second order mechanism with chemical sorption as the rate limiting step.
The two adsorbents were found to be efficient in the sorption of Pb(II)
ions.
and chemically modified(TGC) guinea corn waste used to remove Pb2+
from aqueous solutions. The removal efficiencies of the two adsorbents
were: 71.2% and 73.3% for the UGC and TGC adsorbents respectively.
Also an analysis of six kinetic models: pseudo-second order, pseudo-first
order, Elovich, intraparticle diffusivity, mass transfer and intraparticle diffusion equations was also used to characterize the metal ion transport
mechanism. The sorption of Pb2+ was found to best fit the pseudo-second
order equation. Thereby indicating that the sorption of Pb2+ followed a
second order mechanism with chemical sorption as the rate limiting step.
The two adsorbents were found to be efficient in the sorption of Pb(II)
ions.
| Original language | English |
|---|---|
| Pages (from-to) | 1-9 |
| Number of pages | 10 |
| Journal | Environmental Science : An Indian Journal |
| Volume | 2 |
| Issue number | 2 |
| Publication status | Published - 2007 |
Keywords
- Lead(II) ion
- Kinetic modelling
- Sorption wastewater
- Guinea corn