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|Title: ||Adsorptive removal of iron and manganese from groundwater samples in Ghana by zeolite Y synthesized from bauxite and kaolin|
|Authors: ||Kwakye-Awuah, Bright|
|Issue Date: ||13-Sep-2019|
|Abstract: ||Ground water samples from residential homes in three Regions of Ghana: Central, Greater
Accra and Ashanti, were analyzed for iron and manganese contamination. The samples were exposed
to characterized zeolite Y by X-ray diffraction, scanning electron microscopy, energy dispersive
X-ray spectroscopy, Fourier transformed-infrared spectroscopy and thermos gravimetric-differential
thermal analysis. Zeolite Y is able to remove 98% of iron and 97% of manganese within an hour.
The adsorption of both iron and manganese followed the Freundlich model, suggesting that the ions
were transported onto the zeolite Y surface and subsequently diffused into the zeolite Y framework.
The kinetic studies showed that pseudo-first order and intra particle and film diffusion models
provided the best fit. The adsorption at 0.2 mg L−1 Fe (Q0.2) is calculated to be 0.023 mg g−1
Freundlich adsorption model, whilst that of manganese at 0.05 mg L−1 Mn (Q0.05) is evaluated to be
0.015 mg g−1
. The zeolite retains its adsorption properties when retrieved from the first exposure
water sample, washed copiously with distilled water and added to fresh water samples. The results
suggest that zeolite Y can be used as a potential adsorbent for the removal of iron and manganese
|Description: ||An article published by MDPI and also available at doi:10.3390/w11091912|
|Appears in Collections:||College of Science|
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