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Article

Adsorptive Removal of Iron and Manganese from Groundwater Samples in Ghana by Zeolite Y Synthesized from Bauxite and Kaolin

1
Department of Physics, Kwame Nkrumah University of Science and Technology, UPO, PMB, Kumasi, Ghana
2
Department of Physics, University of Cape Coast, UPO, PMB, Cape Coast, Ghana
3
Council for Scientific and Industrial Research—Institute of Industrial Research, P.O. BOX LG 576 Accra, Ghana
4
Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK
*
Author to whom correspondence should be addressed.
Water 2019, 11(9), 1912; https://doi.org/10.3390/w11091912
Received: 13 May 2019 / Revised: 12 June 2019 / Accepted: 15 June 2019 / Published: 13 September 2019
(This article belongs to the Special Issue Technologies Developing in Heavy Metals' Removal from Water)
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 ( Q 0.2 ) is calculated to be 0.023 mg g−1 for the Freundlich adsorption model, whilst that of manganese at 0.05 mg L−1 Mn ( Q 0.05 ) 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 from groundwater. View Full-Text
Keywords: bauxite; kaolin; zeolite Y; iron; manganese; removal efficiency; adsorption bauxite; kaolin; zeolite Y; iron; manganese; removal efficiency; adsorption
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MDPI and ACS Style

Kwakye-Awuah, B.; Sefa-Ntiri, B.; Von-Kiti, E.; Nkrumah, I.; Williams, C. Adsorptive Removal of Iron and Manganese from Groundwater Samples in Ghana by Zeolite Y Synthesized from Bauxite and Kaolin. Water 2019, 11, 1912. https://doi.org/10.3390/w11091912

AMA Style

Kwakye-Awuah B, Sefa-Ntiri B, Von-Kiti E, Nkrumah I, Williams C. Adsorptive Removal of Iron and Manganese from Groundwater Samples in Ghana by Zeolite Y Synthesized from Bauxite and Kaolin. Water. 2019; 11(9):1912. https://doi.org/10.3390/w11091912

Chicago/Turabian Style

Kwakye-Awuah, Bright; Sefa-Ntiri, Baah; Von-Kiti, Elizabeth; Nkrumah, Isaac; Williams, Craig. 2019. "Adsorptive Removal of Iron and Manganese from Groundwater Samples in Ghana by Zeolite Y Synthesized from Bauxite and Kaolin" Water 11, no. 9: 1912. https://doi.org/10.3390/w11091912

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