Adsorption of aqueous insensitive munitions compounds by graphene nanoplatelets

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dc.citation.articleNumber136091en_US
dc.citation.journalTitleJournal of Hazardous Materialsen_US
dc.citation.volumeNumber480en_US
dc.contributor.authorGurtowski, Luke A.en_US
dc.contributor.authorMcLeod, Sheila J.en_US
dc.contributor.authorZetterholm, Sarah Graceen_US
dc.contributor.authorAllison, Cleveland D.en_US
dc.contributor.authorGriggs, Chris S.en_US
dc.contributor.authorGramm, Joshen_US
dc.contributor.authorWyss, Kevinen_US
dc.contributor.authorTour, James M.en_US
dc.contributor.authorSanchez, Florenceen_US
dc.contributor.orgRice Advanced Materials Instituteen_US
dc.contributor.orgSmalley-Curl Instituteen_US
dc.date.accessioned2024-10-29T14:11:22Zen_US
dc.date.available2024-10-29T14:11:22Zen_US
dc.date.issued2024en_US
dc.description.abstractMitigation strategies for potential environmental impacts of insensitive munition (IM) compounds, including 2,4-dinitroanisole (DNAN), 3-nitro-1,2,4-triazol-5-one (NTO), nitroguanidine (NQ), and methylnitroguanidine, (MeNQ) are being considered to enhance sustainability of current or potential IM formulations. Graphene nanoplatelets (GnPs) were investigated for adsorptive removal of each compound. GnPs were characterized to determine surface areas, along with particle size and zeta potential at different pH and ionic strength conditions. Adsorption kinetics and isotherm studies were conducted, comparing results against granular activated carbon (GAC). Ionic strength, pH, and temperature were adjusted to inform impacts on adsorptive behaviors and performance. The results indicated that GnPs adsorbed IM compounds more rapidly than GAC. Additionally, GnPs removed DNAN with greater capacity compared to GAC, likely due to π-π interactions. GnPs removed other compounds via van der Waals forces, while GAC exhibited greater adsorption capacities due to higher surface area. Although negative charges associated with GnPs and dissociated NTO species hindered adsorption, pH and ionic strength did not impact other compounds. Moreover, this study reports the first environmental treatment technique for MeNQ. Overall, these findings suggest that GnPs are a promising treatment technology for IM-laden waters, particularly those with compounds like DNAN where specific interactions enhance removal efficiency.en_US
dc.identifier.citationGurtowski, L. A., McLeod, S. J., Zetterholm, S. G., Allison, C. D., Griggs, C. S., Gramm, J., Wyss, K., Tour, J. M., & Sanchez, F. (2024). Adsorption of aqueous insensitive munitions compounds by graphene nanoplatelets. Journal of Hazardous Materials, 480, 136091. https://doi.org/10.1016/j.jhazmat.2024.136091en_US
dc.identifier.digital1-s2-0-S0304389424026700-mainen_US
dc.identifier.doihttps://doi.org/10.1016/j.jhazmat.2024.136091en_US
dc.identifier.urihttps://hdl.handle.net/1911/117952en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license. Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleAdsorption of aqueous insensitive munitions compounds by graphene nanoplateletsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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