Table 4.

Nitrogen fixation output of plasma gas -phase oxidation

Plasma	Supply gas	Air flow rate (L/min)	NOx concentration (ppm)	Optimal energy consumption (MJ/mol NOx)	Source
Spark	Air	Batch (10 min)	2000–6300	40	Pavlovich et al. [82]
Streamer	Air	–	–	30.1	Cooray et al. [100]
Spark	Air	Batch (15 min)	–	20.3	Cooray et al. [81]
DBD	N2/O2 mixture	Batch (6–7 min)	6000	20	Patil et al. [85]
Microwave	N2/O2 mixture	25–45	1612–9380	9.6	Lee et al. [96]
Spark	N2/O2 mixture	1.3–2.6	100–600	8.6	Janda et al. [83]
Jet	Air	0.25–8	100–1000	8.6	Kolb et al. [92]
Glow	Air	2	–	7	Pei et al. [84]
Spark	–	Batch-	–	5.2	Pei et al. [84]
Gliding arc	N2/O2 mixture	0.5–1	2000–14,000	4.8	Patil et al. [89]
Microwave	Air	6	3347–4512	3.76	Kim et al. [99]
Propeller arc	Air, N2/O2	3	0–4462	3.54	Pei et al. [84]
Jet	Air	8.8–66	1000–3500	3.4	Korolev et al. [91]
Plasmatron	N2/O2 mixture	10	15,000	3.6	Vervloessem et al. [102]
Rotating gliding arc	N2/O2 mixture	2	55,000	2.5	Jardali et al. [103]