Simultaneous degradation of phenol-Cr(VI) wastewater on air injection plasma electrolysis using titanium anode

Farawan, Bening; Darojatin, Ilma; Saksono, Nelson

doi:10.1016/j.cep.2021.108769

Cited by 2 publications

(4 citation statements)

References 31 publications

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“…In the liquid phase, the values of the air N 2 fixation products, NO 3 − (aq) , NO 2 − (aq) , NH 3(aq) , and NO x (aq) , were higher than those in the gas phase, including NH 3(q) and NO x (q) . The reason is that they could be directly used as liquid fertilizer 19,20 . In the liquid phase, the highest amount was formed at 20 min, which was considered the optimal time required to obtain maximum air N 2 fixation products.…”

Section: Resultsmentioning

confidence: 99%

“…The reason is that they could be directly used as liquid fertilizer. 19,20 In the liquid phase, the highest amount was formed at 20 min, which was considered the optimal time required to obtain maximum air N 2 fixation products. In addition, the solution temperature was maintained at 50-55 C to prevent the release of NO x and NH 3 into the gas phase.…”

Section: Air N 2 Fixation In Liquid and Gas Phasesmentioning

confidence: 99%

“…In the recently developed air plasma electrolysis method, plasma is produced in the aqueous liquid phase with the simultaneous injection of air. 19,20 This method is effective in directly producing NO 3 À in the liquid phase. 21 The initial formation of plasma involves the activation of N 2 and O 2 from the air by plasma to form ˙N and ˙O, while the H 2 O vapor in the plasma zone is converted to ˙H and ˙OH, as shown in Equations ( 1)-( 4) 22 :…”

Section: Introductionmentioning

confidence: 99%

“…In the recently developed air plasma electrolysis method, plasma is produced in the aqueous liquid phase with the simultaneous injection of air 19,20 . This method is effective in directly producing NO 3 − in the liquid phase 21 .…”

Section: Introductionmentioning

confidence: 99%

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Fixation of air nitrogen to ammonia and nitrate using cathodic plasma and anodic plasma in the air plasma electrolysis method

Saksono,

Suryawinata,

Zakaria

et al. 2023

Env Prog and Sustain Energy

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The fixation of nitrogen (N2) from the air into ammonia (NH3) and nitrate (NO3−) is usually conducted using the Haber–Bosch process, which requires the raw material of hydrocarbons for hydrogen (H2), which has a large amount of energy but produces high CO2 emissions. An environmentally friendly and energy‐saving alternative is the air plasma electrolysis method, which can be used to synthesize NH3 and NO3− under ambient conditions. In this study, this method was used to inject air into the plasma zone in a K2SO4 electrolyte solution to produce N2 fixation compounds. The results showed that the use of cathodic plasma promoted the formation of NH3 but suppressed NO3− production. The optimal air injection rate was achieved at 0.6 L.min−1 and an electrical power of 452 W, with a total fixed N2 of 51.66 mmol. The highest formation of NO3− in cathodic plasma was obtained in 35 min, with a value of 29.92 mmol, and 2.57 mmol NH3 was achieved at 60 min. The high concentration of H2 gas, which is a by‐product of this process, can contribute to increasing the use of Haber–Bosch green technology in the production of NH3.

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Section: Resultsmentioning

confidence: 99%

Section: Air N 2 Fixation In Liquid and Gas Phasesmentioning

confidence: 99%