Nitrogen Fixation Into Water by Pulsed High-Voltage Discharge

Nitrogen in the bubbling gas was directly fixed into water by pulsed high-voltage discharge. When the discharge occurred, nitrogen could be dissociated to form active N species to take part in the aqueous chemical process. Nitrous acid (HNO 2 ) was primarily produced, which was further converted int...

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Published inIEEE transactions on plasma science Vol. 37; no. 1; pp. 211 - 218
Main Authors Bian, Wenjuan, Shi, Junwen, Yin, Xiangli
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.01.2009
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Aqueous chemistry
Bubbling
Chemical processes
Conductivity
Conversion
Discharge
Discharge in water
Distilled water
Electric discharges
Energy efficiency
Exact sciences and technology
Fixation
Fluid flow
Inductors
Laboratories
Liquids
nitrate
Nitric acid
Nitrogen
nitrogen fixation
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma
Plasma applications
Plasma etching
Turning
Wastewater treatment
Water
Plasma
Energetic efficiency
Electric discharges
High-voltage techniques
Nitrogen fixation
Discharge in water
Air
nitrate
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Summary:Nitrogen in the bubbling gas was directly fixed into water by pulsed high-voltage discharge. When the discharge occurred, nitrogen could be dissociated to form active N species to take part in the aqueous chemical process. Nitrous acid (HNO 2 ) was primarily produced, which was further converted into nitric acid (HNO 3 ). With the formation of HNO 2 and HNO 3 , the pH of the liquid decreased. The decrease in pH sped up the conversion from HNO 2 into HNO 3 , thus resulted in an increase in the NO 2 - concentration at first and a decrease after a turning point. The nitrogen fixation rate with bubbling nitrogen was faster than that with bubbling air in distilled water. By discharge for about 30 min, HNO 2 was converted into HNO 3 as the final products. Its concentrations were 1.96 mmol . L -1 with bubbling air and 2.34 mmol . L -1 with bubbling pure nitrogen. The energy efficiencies were 2.08 times 10 -9 and 2.48 times 10 -9 mol . J -1 , respectively.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2008.2007585