Removal of insensitive munitions compounds from water solutions via chitin- and chitosan-based materials

<p>This thesis features evaluations involving chitin- and chitosan-based materials as treatment technologies for solutions contaminated with insensitive munitions (IMs) compounds. Specifically, amine-functionalized chitin adsorbents and chitosan-graphene oxide membranes are evaluated in this s...

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Bibliographic Details
Main Author: Gurtowski, Luke Alexander
Other Authors: Veera Gnaneswar Gude
Format: Others
Language:en
Published: MSSTATE 2017
Subjects:
Online Access:http://sun.library.msstate.edu/ETD-db/theses/available/etd-10242017-164601/
Description
Summary:<p>This thesis features evaluations involving chitin- and chitosan-based materials as treatment technologies for solutions contaminated with insensitive munitions (IMs) compounds. Specifically, amine-functionalized chitin adsorbents and chitosan-graphene oxide membranes are evaluated in this study commercially available biopolymer adsorbents and membranes. Insensitive munitions evaluated include nitrotriazolone (NTO), nitroguanidine (NQ), and 2,4-dinitroanisole (DNAN); 2,4,6-trinitrotoluene (TNT) was also studied as a traditional munition for comparison. Amine-functionalized chitin is an effective adsorbent for NTO, DNAN, and TNT; chitin and the intermediate material, p-tosyl-functionalized chitin, were ineffective at removing any IM or tradition munition compounds evaluated. Cellulose triacetate was the only commercially available biopolymer adsorbent effective at removing munitions compounds from solution; only DNAN and TNT were removed. Chitosan-graphene oxide membranes effectively removed all IM and traditional munitions analyzed, but removal performance degraded with time. Overall, this research shows that the materials studied are effective at removing IM and traditional munitions from solution.</p>