Removal of lindane in water by non-thermal plasma: Parametric optimization, kinetic study, energy yield evaluation, and toxicity assessment

Ansari, Mohsen; Sharifian, M; Farzadkia, Mahdi

doi:10.1016/j.seppur.2022.121549

Cited by 10 publications

(2 citation statements)

References 63 publications

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“…ROS/RNS have therapeutic effects when administered to cells and tissues either directly from the plasma or by exposure to solutions that have already been plasma-treated. Optimization of the NTAPP treatment remained an active topic of research [ 50 , 51 ].…”

Section: Discussionmentioning

confidence: 99%

Effect of Plasma On-Time with a Fixed Duty Ratio on Reactive Species in Plasma-Treated Medium and Its Significance in Biological Applications

Mumtaz

Rana

Lim

et al. 2023

IJMS

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Optimizing the therapeutic range of nonthermal atmospheric pressure plasma (NTAPP) for biomedical applications is an active research topic. For the first time, we examined the effect of plasma on-times in this study while keeping the duty ratio and treatment time fixed. We have evaluated the electrical, optical, and soft jet properties for two different duty ratios of 10% and 36%, using the plasma on-times of 25, 50, 75, and 100 ms. Furthermore, the influence of plasma on-time on reactive oxygen and nitrogen species (ROS/RNS) levels in plasma treated medium (PTM) was also investigated. Following treatment, the characteristics of (DMEM media) and PTM (pH, EC, and ORP) were also examined. While EC and ORP rose by raising plasma on-time, pH remained unchanged. Finally, the PTM was used to observe the cell viability and ATP levels in U87-MG brain cancer cells. We found it interesting that, by increasing the plasma on-time, the levels of ROS/RNS dramatically increased in PTM and significantly affected the viability and ATP levels of the U87-MG cell line. The results of this study provide a significant indication of advancement by introducing the optimization of plasma on-time to increase the efficacy of the soft plasma jet for biomedical applications.

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Section: Discussionmentioning

confidence: 99%

Effect of Plasma On-Time with a Fixed Duty Ratio on Reactive Species in Plasma-Treated Medium and Its Significance in Biological Applications

Mumtaz

Rana

Lim

et al. 2023

IJMS

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“…These agents effectively oxidize organic materials, leading to their rapid degradation [9,10]. The process is further enhanced by physical phenomena such as UV photons and ultrasound waves, produced as by-products of plasma discharges [11,12]. These phenomena can directly degrade organic compounds or activate other substances, thereby boosting the oxidative process.…”

Section: Introductionmentioning

confidence: 99%

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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Removal of Dyes from Aqueous Solutions using Non-Thermal Plasma

Mohammed,

Al-Khazrajy,

Abdallh

et al. 2023

Environ. Process.

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Removal of lindane in water by non-thermal plasma: Parametric optimization, kinetic study, energy yield evaluation, and toxicity assessment

Cited by 10 publications

References 63 publications

Effect of Plasma On-Time with a Fixed Duty Ratio on Reactive Species in Plasma-Treated Medium and Its Significance in Biological Applications

Effect of Plasma On-Time with a Fixed Duty Ratio on Reactive Species in Plasma-Treated Medium and Its Significance in Biological Applications

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

Removal of Dyes from Aqueous Solutions using Non-Thermal Plasma

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