Chitin-based renewable materials from marine sponges for uranium adsorption

TitleChitin-based renewable materials from marine sponges for uranium adsorption
Publication TypeJournal Article
Year of Publication2013
AuthorsSchleuter, D, Günther, A, Paasch, S, Ehrlich, H, Kljajić, Z, Hanke, T, Bernhard, G, Brunner, E
JournalCarbohydrate Polymers
Pagination712 - 718
Date Published2013/01/30/
ISBN Number0144-8617
KeywordsAdsorption, Chitin, Marine sponge, Uranium, Water treatment

Marine sponges of the order Verongida form three-dimensional networks of fibrous chitin, which can easily be extracted. In the hydrated state, these networks are flexible, mechanically stable and can be cut or pressed into any desired form. Here, we show for the first time that chitin-based networks of sponge origin are useful for effective uranium adsorption. They adsorb uranium from solution with a higher adsorption capacity than many other chitinous sorbents. Up to 288mg/g could be achieved. Solid-state NMR, infrared, and Raman spectroscopy indicated that the uranyl is bound to the chitin by weak interactions. 90% of the uranyl could be desorbed using diluted hydrochloric acid. Uranium adsorption and desorption did not result in any destruction of the chitin-based material.

Short TitleCarbohydrate Polymers