Plasma Chemistry and Plasma Processing最新文献_第3页

From AC to Nanosecond Pulses: Impact of Pulse Duration on Methane Non-oxidative Conversion in a DBD 从交流到纳秒脉冲：脉冲持续时间对DBD中甲烷非氧化转化的影响

IF 3.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-07-17 DOI: 10.1007/s11090-026-10697-x

Thomas Fontaine, Linus Nyssen, Nathalie De Geyter, Rony Snyders, François Reniers

{"title":"From AC to Nanosecond Pulses: Impact of Pulse Duration on Methane Non-oxidative Conversion in a DBD","authors":"Thomas Fontaine, Linus Nyssen, Nathalie De Geyter, Rony Snyders, François Reniers","doi":"10.1007/s11090-026-10697-x","DOIUrl":"10.1007/s11090-026-10697-x","url":null,"abstract":"<div><p>Today, most hydrogen production is associated with significant greenhouse gas emissions. Given hydrogen’s growing importance across various sectors (mainly fertilizer synthesis, steel production and transportation), there is increasing interest in alternative, low-emission production routes. One promising route is conversion of methane under non-oxidative conditions, which yields hydrogen and carbonated byproducts. In this work, we investigate methane conversion using non-thermal plasma, specifically dielectric barrier discharges. The investigation focuses on the influence of different high voltage signal durations, ranging from milliseconds pulses (pulsed AC, burst mode) to microsecond (µSP) and nanosecond pulses (NSP), on the energy cost (EC). To ensure a valid comparison between modes, a similar specific energy input (5–11 kJ L<sup>− 1</sup>) is used across different experiments, which are all performed in the same reactor. Results indicate that µSP and NSP present a lower EC (4200–5000 kJ mol<sup>− 1</sup>) for methane conversion than the burst mode (6000–7000 kJ mol<sup>− 1</sup>). The burst mode showed no clear improvement compared to AC operation under the explored SEI range. Rotational temperature (T<sub>rot</sub>) measurements reveal that discharge temperature was higher in the case of the NSP (700–1000 K) compared to the burst mode (500–650 K). T<sub>rot</sub> for the NSP was correlated with pulse power rather than total dissipated energy, showing that tuning a NSP can effectively control the discharge temperature.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 5","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148466413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of the Synergy between Atmospheric Plasma and Graphene-Oxide-Based Materials for Perfluorooctanoic Acid Degradation 大气等离子体与石墨烯基材料协同降解全氟辛酸的研究

IF 3.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-07-14 DOI: 10.1007/s11090-026-10692-2

Kubra Ulucan-Altuntas, Marco Oripoli, Mubbshir Saleem, Giulia Tomei, Samuel Pressi, Enzo Menna, Ester Marotta, Cristina Paradisi

{"title":"Investigation of the Synergy between Atmospheric Plasma and Graphene-Oxide-Based Materials for Perfluorooctanoic Acid Degradation","authors":"Kubra Ulucan-Altuntas, Marco Oripoli, Mubbshir Saleem, Giulia Tomei, Samuel Pressi, Enzo Menna, Ester Marotta, Cristina Paradisi","doi":"10.1007/s11090-026-10692-2","DOIUrl":"10.1007/s11090-026-10692-2","url":null,"abstract":"<div><p>Cold atmospheric plasmas offer promise for the treatment of water contaminated by per- and polyfluoroalkyl substances (PFAS). One approach to improve these treatments combines plasma with various heterogeneous materials, searching for new catalytic routes or for benefits associated to physical phenomena like sorption. Here a 32-pin electrode was used to generate pulsed (M-SPD, Multipin-Self Pulsing Discharge) and corona (MCD, Multipin Corona Discharge) discharges, and test them in combination with graphene oxide (GO), reduced graphene oxide (rGO) and boron-doped reduced graphene oxide (B-rGO). Preliminary tests on the degradation of perfluorooctanoic acid (PFOA) in water, identified beneficial effects by these materials, the M-SPD/B-rGO system being the most effective one. Further research focussed on this system, to evaluate the effect of B-rGO on the velocity and products of plasma-induced PFOA degradation, using argon or air as plasma feed gas. The amount of PFOA adsorbed on the material during the treatment was also determined. Both with argon and air plasma, significantly lower concentrations of residual PFOA were found in the presence of catalyst than with plasma only. For example, after 5 min treatment of a 1∙10<sup>− 6</sup> M PFOA solution, residual PFOA with and without catalyst was, respectively, 32% and 17% for air plasma and 51% and 32% for argon plasma. Moreover, the fraction of PFOA adsorbed on the material was also efficiently degraded during the treatment. Both features make the plasma plus B-rGO treatment a promising option for stream processing of PFOA-contaminated water. Defluorination was 32% after 30 min treatment of a 1∙10<sup>− 5</sup> M PFOA solution.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 5","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11090-026-10692-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In Situ Electron Spin Resonance Evaluation of Hydrogen Atoms at Plasma–Liquid Interfaces for Analysis of Perfluorooctanoic Acid Degradation 等离子体-液体界面氢原子的原位电子自旋共振评价用于全氟辛酸降解分析

IF 3.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-07-10 DOI: 10.1007/s11090-026-10690-4

Kenichi Inoue, Amir Sawires, Camelia Miron, Rikimaru Fujita, Taishi Yamakawa, Takashi Kondo, Kenji Ishikawa

{"title":"In Situ Electron Spin Resonance Evaluation of Hydrogen Atoms at Plasma–Liquid Interfaces for Analysis of Perfluorooctanoic Acid Degradation","authors":"Kenichi Inoue, Amir Sawires, Camelia Miron, Rikimaru Fujita, Taishi Yamakawa, Takashi Kondo, Kenji Ishikawa","doi":"10.1007/s11090-026-10690-4","DOIUrl":"10.1007/s11090-026-10690-4","url":null,"abstract":"<div><p>To confirm the reactions involved in the plasma-based degradation process of perfluoroalkyl substances, this study analyzed the relationship between the degradation ratio of perfluorooctanoic acid (PFOA) and reductive radicals, such as hydrogen atoms (•H), at the plasma–liquid interface. In situ electron spin resonance (ESR) measurements for the detection of free radicals at liquid interfaces were performed for in-liquid Ar and He plasmas, which were also used for the PFOA degradation experiments. In situ ESR coupled with in-liquid plasma equipment using spin-trapping reagents indicated the production of hydroxyl radicals (•OH) and •H. The kinetic analysis of the concentration of radical adducts during plasma treatment allowed their production rates to be estimated. This method can be used to evaluate the amount of •OH and •H reacting at liquid interfaces using the rate constant of each radical adduct as an indicator. These measurements revealed that the He plasma supplied fewer •H than the Ar plasma, while supplying the same amount of •OH. The difference in the production of •H at the liquid interfaces between Ar and He plasmas with constant power consumption did not affect the degradation and defluorination ratio of PFOA, which were similar in the Ar and He plasma treatments. These results disproving the relationship between the •H from the plasma and the degradation reaction of PFOA are consistent with the notion that plasma-based degradation processes are primarily driven by electrons and ions.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 5","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11090-026-10690-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improve the Efficiency of NH3 Capture for N Recycle by Gas Discharge Plasma 提高气体放电等离子体氮回收中氨的捕获效率

IF 3.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-07-09 DOI: 10.1007/s11090-026-10689-x

Mengqi Li, Min Zhang, Yi Dai, Jiwang Li, Nanyou Wang, Sirui Li, Zilan Xiong

{"title":"Improve the Efficiency of NH3 Capture for N Recycle by Gas Discharge Plasma","authors":"Mengqi Li, Min Zhang, Yi Dai, Jiwang Li, Nanyou Wang, Sirui Li, Zilan Xiong","doi":"10.1007/s11090-026-10689-x","DOIUrl":"10.1007/s11090-026-10689-x","url":null,"abstract":"<div><p>NH<sub>3</sub> emission from agricultural and livestock activities causes serious nitrogen waste and air pollution. Air plasma provides a green approach for NH<sub>3</sub> capture and nitrogen recycling via an indirect pathway: post-plasma products react with NH<sub>3</sub> to form recyclable nitrogen fertilizer NH<sub>4</sub>NO<sub>3</sub>. However, the practical application of this technology is currently limited by two critical bottlenecks: the unclear mechanism of humidity influence and the difficulty of scaling up intermittent operation. In this work, we first revealed the core mechanism by which relative humidity (RH) regulates the discharging energy distribution. Increasing RH from 5% to 100% promoted energy consumption for H<sub>2</sub>O excitation rather than NO<sub>x</sub> generation, leading to a 56% decrease in NH<sub>4</sub>NO<sub>3</sub> yield. The optimal operating condition in single-channel mode was determined as 5% RH and 5 sccm NH<sub>3</sub> flow rate, achieving a 7.5-fold higher yield with NH<sub>3</sub> capture rate (CR) over 90%. On this basis, a continuous dual-channel air plasma system was designed to realize simultaneous mixing of post-plasma products and NH<sub>3</sub>. Results showed that CR and NO<sub>x</sub> utilization rate (UR) exhibited opposite trends with gas flow rates. There is always a balance point to make CR and UR both reach a higher level. Therefore, a SCORE index was then proposed to evaluate and optimize the efficiency under different requirements.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 5","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Degradation of Diethyl Phthalate by Dielectric Barrier Plasma Coupled Magnetic Carbon Iron Nanorods Efficiency, Mechanism, Active Group, and Toxicity Evaluation 介质阻挡等离子体耦合磁性碳铁纳米棒降解邻苯二甲酸二乙酯的效率、机理、活性基团及毒性评价

IF 3.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-07-08 DOI: 10.1007/s11090-026-10694-0

Zimu Xu, Bin Lv, Xianglong Xu, Huimin Zhang, Lubiao Mo, Yan Lan, Danzhou Wu, Mengyu Zhang, Zhong Qian, Huiling Shen, Shuyi Li, Yuanxin Wang, Qi Wu, Hao Zhang, Farshad Sohbatzadeh, Shuheng Hu, Cheng Cheng

{"title":"Degradation of Diethyl Phthalate by Dielectric Barrier Plasma Coupled Magnetic Carbon Iron Nanorods Efficiency, Mechanism, Active Group, and Toxicity Evaluation","authors":"Zimu Xu, Bin Lv, Xianglong Xu, Huimin Zhang, Lubiao Mo, Yan Lan, Danzhou Wu, Mengyu Zhang, Zhong Qian, Huiling Shen, Shuyi Li, Yuanxin Wang, Qi Wu, Hao Zhang, Farshad Sohbatzadeh, Shuheng Hu, Cheng Cheng","doi":"10.1007/s11090-026-10694-0","DOIUrl":"10.1007/s11090-026-10694-0","url":null,"abstract":"<div><p>Phthalate contaminants are a significant threat to aquatic environments and human health and have attracted considerable attention from the environmental research community. Low-temperature plasma has proven effective for removing organic pollutants in water. However, due to its high energy consumption and incomplete mineralization, its application in wastewater treatment is limited. Therefore, this study combined a dielectric barrier plasma jet to synergize with Metal–organic Framework (MOF)-derived magnetic carbon iron nanorods (MCIN) to degrade diethyl phthalate in water and elucidate its degradation mechanism. The results showed that the best catalytic performance was achieved with MCIN prepared at 800 °C, and the DEP degradation and mineralization rates reached 97% and 70%, respectively, representing increases of 16% and 68% compared with the system without the catalyst. Through the analysis of active species, electron transfer among Fe, Fe(II), and Fe(III) through the carbon-iron structure could efficiently utilize the diffused H<sub>2</sub>O<sub>2</sub> and O<sub>3</sub> in water to generate more oxidizing reactive oxygen species, thus improving the degradation efficiency. The DEP molecular structure was optimized, and the reaction sites were predicted using the Fukui function. These results were combined with liquid chromatography time-of-flight mass spectrometry analysis to propose possible degradation pathways. Furthermore, biotoxicity analysis of the degradation intermediates and wheat experiments confirmed the potential applicability of the plasma + MCIN system employed in this study for treating wastewater containing plasticizers.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 5","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Controlling Reactivity at the Plasma-Liquid Interface: Applications to Remediation of PFAS in Water 等离子体-液体界面反应性控制：在水中PFAS修复中的应用

IF 3.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-07-04 DOI: 10.1007/s11090-026-10691-3

Tiago C. Dias, Jisu Jeon, Stephen Olson, Xuefei Qiu, Selma Mededovic Thagard, Mark J. Kushner

{"title":"Controlling Reactivity at the Plasma-Liquid Interface: Applications to Remediation of PFAS in Water","authors":"Tiago C. Dias, Jisu Jeon, Stephen Olson, Xuefei Qiu, Selma Mededovic Thagard, Mark J. Kushner","doi":"10.1007/s11090-026-10691-3","DOIUrl":"10.1007/s11090-026-10691-3","url":null,"abstract":"<div><p>Atmospheric pressure plasmas (APPs) can efficiently activate liquids by simultaneous delivery of electrons, ions, photons, and excited neutral species to the liquid surface. With the goal of controlling APP-liquid interactions, the impact of operational parameters on the formation and development of surface ionization waves (SIWs) was investigated with a two-dimensional numerical model, including the effects of the: (i) applied voltage pulse; (ii) liquid thickness (capacitance); (iii) liquid conductivity; and (iv) Ar/He gas mixture ratio. These parameters can be used to control the type and flux of reactive species arriving at the liquid surface, providing a means to tune the plasma-initiated chemistry. Higher voltages, thinner liquids, higher liquid conductivities, and helium-rich mixtures shift the system towards charge-dominated interfacial reactivity, whereas lower voltages, thicker liquids, lower conductivities, and argon-rich mixtures enhance photon-driven pathways. The ability to control reactivity delivered to the surface was applied to an investigation of APP destruction of per- and polyfluoroalkyl substances (PFAS) in water. Since long-chain PFAS preferentially accumulate at the gas–liquid interface, APPs that generate SIWs provide a targeted means of delivering reactive fluxes directly to these contaminants.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 5","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11090-026-10691-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Arc-discharge Plasma Conversion of Asphaltene-rich Oil-industry Waste into Carbon Materials 富沥青质石油工业废渣电弧放电等离子体转化成碳材料

IF 3.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-07-01 DOI: 10.1007/s11090-026-10693-1

Frantsina Evgeniya, Petrova Yuliya, Egorova Valentina, Povalyaev Pavel, Pak Alexander, Zelentsov Dmitry

{"title":"Arc-discharge Plasma Conversion of Asphaltene-rich Oil-industry Waste into Carbon Materials","authors":"Frantsina Evgeniya, Petrova Yuliya, Egorova Valentina, Povalyaev Pavel, Pak Alexander, Zelentsov Dmitry","doi":"10.1007/s11090-026-10693-1","DOIUrl":"10.1007/s11090-026-10693-1","url":null,"abstract":"<div><p>One of the major environmental challenges in the oil industry is the accumulation of heavy asphaltene-rich residues, which are difficult to process and are often underutilized as carbon resources. In this study, asphalt obtained as a by-product of the solvent deasphalting (SDA) process was converted into graphitized carbon materials by vacuum-free direct-current arc-discharge plasma treatment. The plasma route enabled rapid transformation of the asphaltene-rich feedstock into carbon products containing graphite-like domains, nanoonions, and polyhedral graphite particles. Comprehensive physicochemical characterization confirmed substantial dehydrogenation, deoxygenation, and structural ordering of the initial organic matrix, together with high thermal stability and measurable porosity in the resulting carbon material. The obtained carbon was further evaluated as a precursor for carbide synthesis under vacuum-free arc conditions. X-ray diffraction analysis confirmed the formation of cubic silicon carbide SiC (with carbide phase is 56 wt% (without annealing) and 85 wt% (after annealing), JCPDS 29-1129) and chromium carbide Cr₃C₂ (with carbide phase 84 wt% (without annealing), JCPDS 35–0804), demonstrating that the SDA-asphalt-derived carbon can serve as an effective carbon source for rapid carbide formation. The results highlight a practical route for converting problematic oil-industry waste into value-added graphitized carbon and carbide materials. This approach expands the utilization potential of asphaltene-rich residues and offers a promising waste-valorization strategy with relevance to chemical engineering applications.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 5","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unraveling the Role of Gas-Phase Plasma Species in PFAS Degradation During Treatment of Contaminated Water with Submerged Gliding Arc Plasma (GAP) Discharge 水下滑动电弧等离子体（GAP）放电处理污水过程中气相等离子体在PFAS降解中的作用

IF 3.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-06-23 DOI: 10.1007/s11090-026-10688-y

Mikaela J. Surace, Mobish A. Shaji, Erich Heinzel, Jimmy Murillo-Gelvez, Jitlekha Tubsuri, Alexander A. Fridman, Alexander Rabinovich, Erica R. McKenzie, Gregory Fridman, Christopher M. Sales

{"title":"Unraveling the Role of Gas-Phase Plasma Species in PFAS Degradation During Treatment of Contaminated Water with Submerged Gliding Arc Plasma (GAP) Discharge","authors":"Mikaela J. Surace, Mobish A. Shaji, Erich Heinzel, Jimmy Murillo-Gelvez, Jitlekha Tubsuri, Alexander A. Fridman, Alexander Rabinovich, Erica R. McKenzie, Gregory Fridman, Christopher M. Sales","doi":"10.1007/s11090-026-10688-y","DOIUrl":"10.1007/s11090-026-10688-y","url":null,"abstract":"<div><p>Per- and polyfluoroalkyl substances (PFAS) are resistant to degradation by typical treatment methods. Various technologies utilizing non-equilibrium plasma, including gliding arc plasma (GAP) discharge, show promise for degrading PFAS in water. This study investigated the mechanism by which air GAP discharge degrades PFAS in water. Experiments scavenging aqueous plasma species indicated that hydrated electrons (e<sup>−</sup> <sub>aq</sub>) are important to degradation, but do not play a significant role in mineralization, while reactive oxygen and nitrogen species (RONS) appeared to play a negligible role. On the other hand, experiments that scavenged gas-phase charged particles decreased PFAS degradation and completely inhibited mineralization. Based on these results, degradation products, and previous literature on PFAS degradation pathways and GAP treatment of PFAS-contaminated water, several significant pathways for PFAS degradation during GAP treatment were hypothesized: (1) thermal mineralization driven by gas-phase charged particles, (2) H/F exchange driven by free electrons (e<sup>−</sup>) at the plasma-water interface or e<sup>−</sup> <sub>aq</sub> at the plasma-water interface and in the bulk liquid, and (3) fragmentation via charge transfer from gas-phase charged particles. While the significance of gas-phase charged particles to PFAS degradation in water during non-equilibrium plasma treatment has been previously hypothesized and modeled, this study provides the first experimental evidence of their role.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 5","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11090-026-10688-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Steam–Argon and Steam–Hydrogen Plasma Properties: Effects on Plasma Jet Characteristics 蒸汽-氩和蒸汽-氢等离子体特性：对等离子体射流特性的影响

IF 3.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-06-22 DOI: 10.1007/s11090-026-10687-z

Zdeňka Tomášová, Jiří Jeništa, Anthony B. Murphy, Milan Hrabovský, Alan Mašláni, Michael Pohořelý, Maksym Buryi

{"title":"Steam–Argon and Steam–Hydrogen Plasma Properties: Effects on Plasma Jet Characteristics","authors":"Zdeňka Tomášová, Jiří Jeništa, Anthony B. Murphy, Milan Hrabovský, Alan Mašláni, Michael Pohořelý, Maksym Buryi","doi":"10.1007/s11090-026-10687-z","DOIUrl":"10.1007/s11090-026-10687-z","url":null,"abstract":"<div><p>Most plasma-based waste-treatment gasification systems employ arc plasma torches, in which the arc is usually stabilized either by a water vortex or by a swirling gas flow. Hybrid water–gas torches integrate both stabilization mechanisms. In current practice, argon is frequently selected as the stabilizing medium due to its strong arc-stabilizing capability; however, its presence in the produced synthesis gas is undesirable. This drawback motivates the search for alternative stabilizing gas compositions. Hydrogen has been proposed as a potential substitute for argon and may offer improved plasma-processing performance. In this study, we present thermophysical property calculations for argon–steam and hydrogen–steam plasmas, including enthalpy, electrical conductivity, thermal conductivity, and net emission coefficients. In addition, we introduce parameters derived from a simplified integral model of the arc column to characterize the influence of the stabilizing gas on arc-column behavior. The parameters were benchmarked against a more detailed one-dimensional numerical model of the central part of the plasma discharge. The results indicate that hydrogen increases the thermal conductivity and enthalpy of the plasma compared to argon, while the electrical conductivity is slightly larger for argon at relevant temperatures. The examined parameters suggest that hydrogen stabilization leads to higher arc voltages, although with increased heat losses to the torch walls. Relative to argon–steam, hydrogen–steam plasmas are expected to exhibit lower bulk temperatures while transporting higher enthalpy, which may translate into improved overall efficiency and supports the feasibility of hydrogen as an effective stabilizing gas for hybrid torches.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 5","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Non-thermal Plasma on Cucumber Against Meloidogyne incognita Under Open Air Pot Trials 非热等离子体对黄瓜抗顽曲性丝裂病的影响

IF 3.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-06-18 DOI: 10.1007/s11090-026-10684-2

Pratik Doshi, Ferenc Tóth, Renáta Petrikovszki, Veronika Medvecká, Petra Ličková, Anna Zahoranová, Leonid Satrapinskyy, Vladimír Scholtz, Josef Khun, Laura Thonová, Božena Šerá

{"title":"Effect of Non-thermal Plasma on Cucumber Against Meloidogyne incognita Under Open Air Pot Trials","authors":"Pratik Doshi, Ferenc Tóth, Renáta Petrikovszki, Veronika Medvecká, Petra Ličková, Anna Zahoranová, Leonid Satrapinskyy, Vladimír Scholtz, Josef Khun, Laura Thonová, Božena Šerá","doi":"10.1007/s11090-026-10684-2","DOIUrl":"10.1007/s11090-026-10684-2","url":null,"abstract":"<div><p>The study evaluated two different treatments for nonthermal plasma devices, namely diffuse coplanar surface barrier discharge (DCSBD) and point-to-ring discharge (PTR) in cucumber plants against the severity of <i>Meloidogyne incognita</i> infestation. Plants were evaluated as intensity of infestation (Zeck scale), shoot height, compared to the infected control (IC) (nontreated seeds with <i>M. incognita</i>) and negative control (NC) (no infestation with treatment and no <i>M. incognita).</i> DCSBD 5s reduced the infestation by 22.9% compared to IC, although this reduction was not statistically significant. A significant reduction in <i>M. incognita</i> infestation in order from higher to lower was found in DCSBD 10s > PTR 10 min > PTR 15 min, compared to IC. In parallel, treatment-dependent differences were observed in shoot height, indicating a marked improvement in vegetative growth following DCSBD exposure. Compared with IC, shoot height increased in DCSBD 5s by 45.1% and PTR 10 min by 21.9%, but decreased in DCSBD 10s by 6.9% and PTR 15 min by 8.7%. When compared with NC, only DCSBD 5s increased shoot height 13.4%; all other treatments decreased. Optimizing exposure to NTP can effectively suppress nematode damage, and NTP has potential as an environmentally friendly alternative nematode management strategy depending on the precise treatment parameters.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 5","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11090-026-10684-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148281070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0