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Heavy Metal Removal from Aqueous Solutions Using Fly-Ash Derived Zeolite NaP1

Ankrah, Archibald Frank; Tokay, Begum; Snape, Colin E.

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Authors

Archibald Frank Ankrah

BEGUM PEISSEL BEGUM.TOKAY@NOTTINGHAM.AC.UK
Professor of Chemical Engineering

COLIN SNAPE COLIN.SNAPE@NOTTINGHAM.AC.UK
Professor of Chemical Technology & Chemical Eng



Abstract

Fly-ash derived zeolites have recently -received great attention as cheaper adsorbents to remove heavy metals from water since they can be synthesized from a waste product. In this study, we evaluated the single- and multi-cation adsorption efficiencies of fly-ash derived NaP1 for the removal of zinc (Zn), copper (Cu) and lead (Pb). We also determined precipitation and leaching from NaP1 during the adsorption. Results showed that the uptake capacities for Zn (34mg/g) and Pb (192mg/g) were higher than other fly-ash derived NaP1 and adsorbents such as clinoptilolite and activated carbon. The Cu uptake was estimated ~ 14.6mg/g. Pb2+ > Cu2+ > Zn2+ is the order for the metal cation selectivity of NaP1. Langmuir adsorption isotherm and pseudo-second order kinetic model fitted best for all elements. The metal uptake occurred in 15min. Diffusion of hydrated metals through microporous channels is the rate-determining step.

Journal Article Type Article
Acceptance Date Feb 8, 2022
Online Publication Date Mar 3, 2022
Publication Date Apr 1, 2022
Deposit Date Mar 7, 2022
Publicly Available Date Mar 7, 2022
Journal International Journal of Environmental Research
Print ISSN 1735-6865
Electronic ISSN 2008-2304
Publisher Springer Science and Business Media LLC
Peer Reviewed Peer Reviewed
Volume 16
Issue 2
Article Number 17
DOI https://doi.org/10.1007/s41742-022-00395-9
Keywords General Environmental Science
Public URL https://nottingham-repository.worktribe.com/output/7545946
Publisher URL https://link.springer.com/article/10.1007/s41742-022-00395-9

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