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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2649
Title: Adsorption of uranium from aqueous solution as well as seawater conditions by nitrogen-enriched nanoporous polytriazine
Authors: Chaudhary M.
Singh L.
Rekha P.
Srivastava, Vimal Chandra
Mohanty, Paritosh
Published in: Chemical Engineering Journal
Abstract: Efficient removal of uranium from both aqueous and simulated seawater conditions using a nitrogen enriched nanoporous polytriazine (NENP-1), is reported. A maximum adsorption capacity of 489 mg g?1 with 97.8% adsorption efficiency was estimated at 25 °C and pH of 7, when 10 mg of NENP-1 was introduced to 10 mL of 500 mg L?1 aqueous uranium solution. Both linear and non-linear regression analyses have been performed. The adsorption follows a pseudo second order kinetics and fitted well with the Langmuir adsorption isotherm model. The negative values of ?S (?52.08 J mol?1 K?1), ?H (?24.37 kJ mol?1) and ?G indicate that the uranium adsorption is a spontaneous exothermic process with a reduced entropy. Retention of 93% activity even after five consecutive cycles, achieving (0.012 mg L?1) the permissible limits of the WHO (0.015 mg L?1) and USEPA (0.03 mg L?1) and adsorption of uranium (50 mg g?1) from simulated seawater have made this a potential adsorbent for industrial applications. © 2019 Elsevier B.V.
Citation: Chemical Engineering Journal (2019), 378(): -
URI: https://doi.org/10.1016/j.cej.2019.122236
http://repository.iitr.ac.in/handle/123456789/2649
Issue Date: 2019
Publisher: Elsevier B.V.
Keywords: Microwave-assisted synthesis
Nitrogen enriched nanoporous polytriazine (NENP)
Simulated seawater
Uranium removal
WHO and USEPA permissible limits
ISSN: 13858947
Author Scopus IDs: 35291437000
57206129331
56338266200
35565811700
55930648500
Author Affiliations: Chaudhary, M., Functional Materials Laboratory, Department of Chemistry, IIT RoorkeeUttarakhand 247667, India
Singh, L., Department of Chemical Engineering, IIT RoorkeeUttarakhand 247667, India
Rekha, P., Department of Chemistry, MNIT JaipurRajasthan 302017, India
Srivastava, V.C., Department of Chemical Engineering, IIT RoorkeeUttarakhand 247667, India
Mohanty, P., Functional Materials Laboratory, Department of Chemistry, IIT RoorkeeUttarakhand 247667, India
Funding Details: This research was financially supported by DST, Govt. of India with Grant No. DST/TDT/TDP-03/ 2017(G). Appendix A
Corresponding Author: Mohanty, P.; Functional Materials Laboratory, Department of Chemistry, IIT RoorkeeIndia; email: pmfcy@iitr.ac.in
Appears in Collections:Journal Publications [CH]
Journal Publications [CY]

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