Research Terms
Bioprocessing Engineering Chemical Engineering Pollution Control Cleanup Technology Emission Control Water Pollution Plasma
Keywords
Famu-Fsu College Of Engineering Non Thermal Plasma Reactor Design
Industries
Air & Environment Water Biotech
Professor Bruce R. Locke earned his B.E. in Chemical Engineering and Environmental and Water Resources from Vanderbilt University in 1980, M.S. degree from University of Houston in 1982, and his Ph.D. in Chemical Engineering from North Carolina State University in 1989. From 1982 to 1986 he was a research engineer at the Research Triangle Institute, Research Triangle Park, NC, where he worked on measurement and analysis of aerosol particles in microelectronics manufacturing. He has been a faculty member in the Department of Chemical and Biomedical Engineering at the FAMU-FSU College of Engineering since 1989 where he also served as Department Chair from 2004 until 2012. He was an Associate Provost at Florida State University (FSU) from 2012 to 2018 during which time he also served as interim dean of the FAMU-FSU College of Engineering from 2015-2016. Since 2019 he is again serving as Department Chair of Chemical and Biomedical Engineering. He was named an FSU Distinguished University Research Professor in 2010. Dr. Locke has published over 140 peer reviewed journal papers and 8 book chapters with over 14,000 citations. He holds 11 US patents of which 4 are currently under license for commercialization. He was a visiting professor in Japan, France, and China, and was a US Fulbright Research Scholar at the Institute of Plasma Physics, Czech Academy of Sciences, Prague in 2017-2018. He is a Fellow of the American Institute of Chemical Engineers, co-Editor-in-Chief of Plasma Chemistry and Plasma Processing and serves on the Advisory Board for Plasma Processes and Polymers. His research interests include plasma reaction engineering for chemical synthesis and environmental pollution control, with particular emphasis on gas-liquid plasma reactor design and development.
IEEE, Member; 1999 - present
American Chemical Society, Member; 1989 - present
American Institute of Chemical Engineers, Member; 1982 - present
Plasma Chemistry and Plasma Processing, co-Editor in Chief, Springer; 2009 - 2022
Plasma Processes and Polymers, International Advisory Board, Wiley VCH; 2008 - 2022
Annually, approximately 810 M barrels of oil (equivalent) are used globally as feed-stock to produce 147 M metric tons of synthetic nitrogen-based fertilizer which is vital for producing the food supply to sustain the world’s population. The production of this fertilizer is not only energy intensive, but also leads to significant environmental pollution and affects the economic viability of farming in many parts of the world. In this work, an FSU patented flowing film plasma reactor is utilized to generate nitrogen fertilizer in an environmentally friendly way using only air, water, and electricity. The environmentally friendly fungicide and bactericide, hydrogen peroxide, is also simultaneously produced. This process can provide these compounds continuously and on-demand as “green” nitrogen fertilizer and as a “green” fungicide/bactericide, enabling farmers to produce fertilizer on-site as needed and reduce the need to use harmful pesticides. Our system can produce locally the required concentrations of nitrate and hydrogen peroxide, thereby removing the need for shipping and storing large quantities of highly concentrated, hazardous, and potentially dangerous chemicals. The basic physics and chemistry of nitrate generation with plasma discharge is well known from naturally occurring lightning in thunderstorms. This work aims to develop a deeper understanding of how this reactive chemistry can be replicated and harnessed. Aspects of both the power supply and reactor configuration are investigated to increase both the energy yield and production rate of the process. The technology is currently under license to Redhill Scientific, LLC, a startup company specializing in commercializing plasma technology from Professor Locke’s laboratory.
Subject Areas:
Audience:
Adults
Duration:
1 hour or less
Fee:
Expenses Only
Gliding arc discharges have been investigated as a potential technology for gas phase pollution treatment and for liquid phase pollution treatment. Ultimately, the practical use of gliding arc technology to promote chemical transformations, such as the removal of organic pollutants in water or the generation of hydrogen peroxide, other reactive oxygen species, or reactive nitrogen species for treatment of potentially contaminated foods, depends on the efficiency that can be achieved.
The present invention describes a plasma gliding arc discharge reactor that is useful for chemical transformations in liquids and gases. The reactor may include a housing having a plurality of divergent electrodes, a power supply connected to the electrodes delivering pulsed power to the reactor, and a nozzle that directs a mixture of a carrier gas and a liquid to a region between the divergent electrodes, thereby generating plasma in the region. The nozzle can include a first inlet for receiving the carrier gas, a second inlet for receiving the liquid and a mixing chamber that is configured to mix the carrier gas and the liquid prior to being directed to the region.
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