首页|Plasma nitrogen fixation system with dual-loop enhancement for improved energy efficiency and its efficacy for lettuce cultivation
Plasma nitrogen fixation system with dual-loop enhancement for improved energy efficiency and its efficacy for lettuce cultivation
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Plasma nitrogen fixation(PNF)has been emerging as a promising technology for greenhouse gas-free and renewable energy-based agriculture.Yet,most PNF studies seldom address practical application-specific issues.In this work,we present the development of a compact and automatic PNF system for on-site agricultural applications.The system utilized a gliding-arc discharge as the plasma source and employed a dual-loop design to generate NOx-from air and water under atmospheric conditions.Experimental results showed that the system with a dual-loop design performs well in terms of energy costs and production rates.Optimal operational parameters for the system were determined through experimentation,resulting in an energy cost of 13.9 MJ mol-1 and an energy efficiency of 16 g kWh-1 for NO3- production,respectively.Moreover,the concentration of exhausted NOx was below the emission standards.Soilless lettuce cultivation experiments demonstrated that NOx- produced by the PNF system could serve as liquid nitrate nitrogen fertilizer.Overall,our work demonstrates the potential of the developed PNF system for on-site application in the production of green-leaf vegetables.
NETL
NSTL
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