Bubbling Water–Treating DBD Plasma Device Optimization Using Experimental and Computational Methods

Robinson, Conner D. [North Carolina State University, Raleigh, NC (United States)]; Sponsel, Nicholas L. [North Carolina State University, Raleigh, NC (United States)]; Stapelmann, Katharina [North Carolina State University, Raleigh, NC (United States)] (ORCID:0000000221162661)

doi:10.1002/ppap.70000

DOE OSTI · 2537936

Bubbling Water–Treating DBD Plasma Device Optimization Using Experimental and Computational Methods

Robinson, Conner D. [North Carolina State University, Raleigh, NC (United States)]·Sponsel, Nicholas L. [North Carolina State University, Raleigh, NC (United States)]·Stapelmann, Katharina [North Carolina State University, Raleigh, NC (United States)] (ORCID:0000000221162661)

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Abstract

A dry air atmospheric pressure volume dielectric barrier discharge is employed to fix nitrogen in water. Producing nitrate for use as nitrogen fertilizer is the primary motivation. A 0D chemistry model is developed and informed by the electrical, and geometric characteristics of the device and the plasma gas temperature. Modeled ozone and nitrate densities are compared to those measured experimentally in the plasma effluent and treated liquid for a range of gas temperatures. Modeled and measured ozone densities are in good agreement; however, the model lacks the liquid chemistry to properly represent the measured nitrate density. A gas temperature-based shift from ozone to NO x producing regimes is observed in both experiment and model, and the reactions responsible are evaluated.

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY dielectric barrier discharges (DBD)modeling non‐thermal plasma (NTP)plasma treated water (PTW)

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Robinson, Conner D. [North Carolina State University, Raleigh, NC (United States)], Sponsel, Nicholas L. [North Carolina State University, Raleigh, NC (United States)], Stapelmann, Katharina [North Carolina State University, Raleigh, NC (United States)] (ORCID:0000000221162661). 2025-02-07. Bubbling Water–Treating DBD Plasma Device Optimization Using Experimental and Computational Methods. https://doi.org/10.1002/ppap.70000

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