Application of Plasma-Assisted Advanced Oxidation Processes for Removal of Emerging Contaminants in Water

Allabakshi, Shaik Mahamad; SRIKAR, PS NAGA SAI RAGHAVENDRA; Gangwar, Reetesh Kumar; Maliyekkal, Shihabudheen M.

doi:10.1007/978-981-16-8367-1_15

Cited by 3 publications

(3 citation statements)

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“…In aqueous solutions, the production of •OH can result from many reactions, which have been extensively discussed elsewhere [8,57]. However, in plasma, the most significant parameters affecting the generation of •OH are T e and n e [58].…”

Section: Quantification Of •Oh and H 2 O 2 In Liquid Mediamentioning

confidence: 99%

“…Among the nonthermal plasma generation techniques, the most popular are plasma jets, gliding arc discharges, dielectric barrier discharges, radiofrequency, and microwave plasma [3][4][5]. A comprehensive overview of NTP applications can be found in other sources [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…NTAPPJs are particularly well-suited for environmental remediation among their diverse range of applications. This is due to the high removal efficiencies that NTPs offer for various pollutants, including volatile organic pollutants, NO x , soot, and synthetic organic pollutants [8]. It allows efficient pollutant removal without consuming excessive energy resources [20].…”

Section: Introductionmentioning

confidence: 99%

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Development of efficient nonthermal atmospheric-pressure Ar-plasma jet through simultaneous spectroscopic characterization and radical quantification

Srikar,

Allabakshi,

Gomosta

et al. 2024

J. Phys. D: Appl. Phys.

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The work investigates the correlation between the plasma characteristics and reactive chemical species generation in an Ar-nonthermal atmospheric pressure plasma-jet (Ar-NTAPPJ) under various operating conditions such as gas flow rate, excitation voltage, and electrode gap and demonstrates the application of such understanding in developing efficient nonthermal plasma systems. The critical plasma parameters such as electron temperature (T e) and electron density (n e) under the various operating conditions were estimated using optical emission spectroscopy coupled with the collision radiative model and Stark broadening methods. At optimal setting of 5 LPM gas flow rate, 4 kV excitation voltage, and 6 mm electrode gap resulted in maximum T e (0.6 eV), enhancing •OH production (0.056 mM) in the liquid phase and OH(A-X) emission in the gas phase, highlighting the significance of operating conditions on building energy efficient plasma systems. The enhanced performance of the optimized Ar-NTAPPJ is demonstrated by taking atrazine as a model herbicide. The degradation performance data was correlated and validated with results obtained from spectroscopic diagnostics. By adequately tuning the operating parameters, four times enhancement in energy yield (∼150 mg kWh−1) was obtained without perturbing the nonthermal plasma mode. In nonthermal mode, to best of the authors knowledge, it is the highest reported energy yield for atrazine degradation. The scalability aspect of the present plasma jet was also investigated by Intensified Charge-Coupled Device camera-based imaging technique. The study establishes the importance of adequate diagnostics in developing efficient next-generation plasma reactors.

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Section: Quantification Of •Oh and H 2 O 2 In Liquid Mediamentioning

confidence: 99%