Abstract
Plastic packaging waste is considered a serious threat to the environment due to its non-biodegradable nature. Transforming plastic waste into active carbons using pyrolysis methods could be a valuable option to solve the challenge of plastic waste. Synthesized active carbon was differentiated using zeta potential, particle size, SEM, BET, and DSC. This study also investigates the use of obtained active carbons for U(VI) removal from commercial phosphoric acid. The kinetics of adsorption were found to follow the pseudo-second-order model and intra-particle diffusion as one of the controlling mechanisms. Langmuir, and Freundlich, isotherms were employed to explore the equilibrium data. Furthermore, thermodynamic investigations revealed that uranium uptake is an endothermic, feasible, and spontaneous process. The present study concludes that plastic waste-based activated carbon could be employed as a low-cost alternative to commercial activated carbon for uranium removal from phosphoric acid and the production of green fertilizers.
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Research ethics: Not applicable.
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Author contributions: Ahmed Masoud: Experimental operation, Data curation & interpretation, writing – original draft – reviewing & editing. Hager Fahmy: Synthesis, Data curation & interpretation, Writing – original draft. El-Maadawy: Validation, Data curation & interpretation, Writing – original draft, reviewing & editing. Saber Ibrahim: Synthesis, Characterization, Methodology, Validation, Data curation & interpretation, Writing – original draft. Mohamed Taha: Methodology, Data curation & interpretation, Writing – original draft, reviewing & editing.
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Competing interests: The authors of this manuscript have no competing or conflict of interest with any person or organization.
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Research funding: Not applicable.
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Data availability: The datasets used and/or analyzed during the current study are available from the corresponding author upon reasonable request.
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Supplementary Material
This article contains supplementary material (https://doi.org/10.1515/ract-2023-0165).
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