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Functionalized metal-organic frameworks for nitrogen recovery from fresh source-separated urine

Guo, Lei and Hoffmann, Michael Robert (2021) Functionalized metal-organic frameworks for nitrogen recovery from fresh source-separated urine. In: 262nd ACS National Meeting & Exposition, 22-26 August 2021, Atlanta, GA.

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Recovering nitrogen from source-sepd. urine has become a sustainable soln. for wastewater management, as it can prevent eutrophication and provide fertilization products in the meantime. However, the majority of nitrogen in fresh source-sepd. urine exists in the form of urea which is difficult to be sepd. from water, and this has posed a great challenge for nitrogen recovery. In this work, a zirconium-based metal-org. framework (Zr-MOF) is rationally modified to provide both reacting sites to convert urea to ammonia in situ and adsorption sites to readily capture ammonium generated aforementioned, therefore serving as a versatile adsorbent platform for nitrogen recovery from fresh sourcesepd. urine. On top of the excellent total nitrogen removal capability of this MOF-based adsorbent, captured ammonium ions can be furthered exchanged with sodium to regenerate the adsorbent and to yield ammonium soln. as a ready-to-use fertilizer. This work opens up a new avenue of utilizing innovative nanomaterials by rational design as a soln. for environmental sustainability.

Item Type:Conference or Workshop Item (Paper)
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Hoffmann, Michael Robert0000-0001-6495-1946
Additional Information:© 2021 American Chemical Society.
Record Number:CaltechAUTHORS:20211215-182711496
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:112470
Deposited By: Tony Diaz
Deposited On:15 Dec 2021 22:19
Last Modified:15 Dec 2021 22:19

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