Plasma Chemistry and Plasma Processing最新文献_第10页

Preservation of Honey-based Solutions by Cold Atmospheric Pressure Plasma: Performance, Determination of Physicochemical, Nutritional and Microbiological Properties, and Future Perspectives 低温常压等离子体保存蜂蜜溶液：性能、理化、营养和微生物特性的测定以及未来展望

IF 2.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-01-17 DOI: 10.1007/s11090-025-10624-6

Angelika Nowak, Piotr Jamroz, Piotr Cyganowski, Pawel Pohl, Kamil Krzysztof Dabrowski, Renwu Zhou, Agata Motyka-Pomagruk, Anna Dzimitrowicz

引用次数: 0

Influence of Gliding Arc Plasma Treatment on Germination Performance and Seedling Vigor of Red Cherry Pepper 滑行弧等离子体处理对红樱桃辣椒萌发性能和幼苗活力的影响

IF 2.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-01-13 DOI: 10.1007/s11090-025-10636-2

Santosh Dhungana, Abhijit Mishra, Mukunda Bhattarai, Raju Khanal, Hom Bahadur Baniya

{"title":"Influence of Gliding Arc Plasma Treatment on Germination Performance and Seedling Vigor of Red Cherry Pepper","authors":"Santosh Dhungana, Abhijit Mishra, Mukunda Bhattarai, Raju Khanal, Hom Bahadur Baniya","doi":"10.1007/s11090-025-10636-2","DOIUrl":"10.1007/s11090-025-10636-2","url":null,"abstract":"<div><p>Red Cherry Pepper (<i>Capsicum annuum</i>, local cultivar ‘Akabare chili’) is one of the important cash crops grown in the eastern and western parts of Nepal as well as in Sikkim, India. In this study, potential use of a low-cost gliding arc discharge (GAD) plasma system to enhance seed germination and vigor of Red Cherry Pepper was studied. At first, electrical and optical characteristics were studied on the basis of gas flow rates and applied voltages. In addition to these, the seeds of Red Cherry Pepper were treated with plasma plume. Favorable seed treatment conditions were identified at 24 V and 14 LPM, which maximized reactive species generation while maintaining the seed temperature below (<span>(<)</span> <span>(39^{,circ })</span>C). Direct treatment of seeds with GAD plasma altered their surface properties, as confirmed by contact angle measurements, conductivity tests, FTIR, and SEM analyses. Germination test reveals that a 120 s plasma treatment increased germination from 54% (control) to 64%, improved the germination index by 56%, and reduced mean germination time by 8% compared to the control. A 180 s treatment further enhanced vigor index I by 29%, but also increased non-viable seeds, indicating a threshold for optimal exposure. These results demonstrate that low-cost GAD plasma is an effective and scalable method for improving germination performance of Red Cherry Pepper seeds when optimized at 120 s treatment time and at 24 V and 14 LPM.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145982511","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

Dual-Discharge Mode for Enhanced Plasma Activated Water Production: Optimizing RONS Generation and Energy Efficiency 增强等离子体活性水生产的双放电模式：优化RONS的产生和能源效率

IF 2.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-01-13 DOI: 10.1007/s11090-026-10639-7

Haiying Chen, Xiang Wu, Min Zhou, Tao Wang, Lingjun Wei

{"title":"Dual-Discharge Mode for Enhanced Plasma Activated Water Production: Optimizing RONS Generation and Energy Efficiency","authors":"Haiying Chen, Xiang Wu, Min Zhou, Tao Wang, Lingjun Wei","doi":"10.1007/s11090-026-10639-7","DOIUrl":"10.1007/s11090-026-10639-7","url":null,"abstract":"<div><p>The production of plasma activated water (PAW) enriched with reactive oxygen and nitrogen species (RONS) is a prerequisite for high-efficient application of PAW in chemical fields. To address the limitations of conventional single-electrode PAW systems, this study designs a PAW generator with a dual-discharge mode consisting of an upper - liquid electrode and a submerged electrode to effectively compensate for the low mass - transfer efficiency of the upper - liquid discharge mode and the instability of the products in the under - liquid discharge mode, thereby improving the discharge stability. The upper - liquid electrode adopts a four - needle T - shaped structure to adapt to the turbulent liquid surface, while the submerged electrode is covered in a quartz tube to ensure stable plasma discharge. Optimized at 171 <span>(:text{V})</span> (input voltage), 0.019 mol/L NaCl, and 30 min, the system achieves nonlinear RONS generation (172.11, 5.11, 3.25 and 0.81 µmol/L for <span>(:{NO}_{2}^{-})</span>, <span>(:{NO}_{3}^{-})</span>, <span>(:H_2O_2)</span>, and <span>(:O_3)</span>, respectively). The total energy consumption is 145.9 J, and the energy efficiency reaches 10.74 g/(KW×h). The device performance of the PAW generator is satisfactory, with temperature fluctuations confined to 7.67–8.33 °C, a final pH of 3.07, and a production volume of 2.4 L out of a rated capacity of 3 L These results underscore the potential of this design to establish a foundation for highly effective, low-energy PAW production across industrial applications.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145982507","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

Harnessing Plasma-Activated Water and Salicylic Acid Synergy to Enhance Germination and Seedling Growth of Tomato via Redox and Hormonal Modulation 利用血浆活化水和水杨酸协同作用，通过氧化还原和激素调节促进番茄萌发和幼苗生长

IF 2.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-01-12 DOI: 10.1007/s11090-025-10637-1

Kainat Gul, Sohail Mumtaz, Adel M. Al-Saif

{"title":"Harnessing Plasma-Activated Water and Salicylic Acid Synergy to Enhance Germination and Seedling Growth of Tomato via Redox and Hormonal Modulation","authors":"Kainat Gul, Sohail Mumtaz, Adel M. Al-Saif","doi":"10.1007/s11090-025-10637-1","DOIUrl":"10.1007/s11090-025-10637-1","url":null,"abstract":"<div><p>Plasma-activated water (PAW) offers a promising biostimulant alternative in sustainable agriculture, yet its integration with endogenous signaling molecules such as salicylic acid (SA) remains underexplored. Here, we investigate the synergistic potential of PAW and SA in modulating early developmental and physiological processes in tomato seedlings. PAW was generated using an underwater capillary discharge system under varying nitrogen gas flow rates. The optimized PAW (600 sccm) displayed elevated levels of reactive oxygen and nitrogen species (H<sub>2</sub>O<sub>2</sub>, NO<sub>x</sub>), along with increased ORP and electrical conductivity. Physiological assays revealed that intermediate concentrations, SA (0.25 mM) and PAW (30 min), were deliberately selected for combination studies, enabling the detection of synergistic responses without saturation effects. The combined treatment (SA + PAW) significantly enhanced seed germination (up to 99.5%), water uptake, and biomass accumulation compared to individual treatments. Antioxidant enzyme activities (SOD, CAT) and osmoprotectant levels (proline, soluble proteins) were markedly elevated. Molecular analysis confirmed upregulation of GA biosynthetic genes (GA20OX1/2/3), nitrate assimilation (NR1), and Ca<sup>2+</sup>-signaling regulator (GLR1), while downregulating growth repressor DELLA. Collectively, the SA + PAW co-treatment reprograms physiological and transcriptional networks, offering a robust, residue-free approach to enhance seedling vigor. This study pioneers a strategy that bridges redox, hormonal, and nutrient pathways through plasma–phytohormone synergy, revealing significant implications for plasma-integrated crop priming technologies.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145982631","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

Multi-physical Numerical Simulation and Design Optimization of a low-temperature Inductively Coupled Plasma Torch for Optical Fabrication 光学制造用低温电感耦合等离子体炬的多物理场数值模拟与设计优化

IF 2.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-01-12 DOI: 10.1007/s11090-025-10617-5

Yuepeng Hu, Peiqi Jiao, Peng Zhang, Bin Fan, Qiang Xin, Yupeng He, Deping Yu

{"title":"Multi-physical Numerical Simulation and Design Optimization of a low-temperature Inductively Coupled Plasma Torch for Optical Fabrication","authors":"Yuepeng Hu, Peiqi Jiao, Peng Zhang, Bin Fan, Qiang Xin, Yupeng He, Deping Yu","doi":"10.1007/s11090-025-10617-5","DOIUrl":"10.1007/s11090-025-10617-5","url":null,"abstract":"<div><p>Atmospheric inductively coupled plasma (ICP) etching has emerged as a critical technology for optical fabrication due to its damage-free etching, high removal efficiency, and adaptability to curved surfaces. However, the existing ICP torch design often struggles to achieve the high reactive gas ionization and low-temperature jet characteristics essential for etching applications. In this paper, a low-temperature ICP conical torch enabling stable plasma generation at reduced power inputs (250 ~ 600 W) was proposed. Through multi-physical coupling simulations, we analyzed the torch’s internal electromagnetic, temperature, and flow fields, which revealed the formation of the skin layer zone, the distribution of the core high-temperature zone, and the influences of the swirl, development, and blockage zones. On this basis, key structural parameters of the torch were optimized, including the taper of the variable-diameter section, the coil axial position and the nozzle throat geometry. Subsequently, etching experiments of fused silica were conducted to verify the removal efficiency and stability of the low-temperature ICP jet. It could achieve a peak removal rate of 11.19 μm/min and a volume removal rate of 0.69 mm<sup>3</sup>/min. The jet exhibited the relatively long-term stability, both axial and radial fluctuations of which were maintained below 5% over 60 min at 300 W. The root-mean-square (RMS) error of the fused silica surface converged from 445.12 nm to 223.88 nm after processing for 18 min at 400 W, with no visible signs of deposition. These results demonstrate the torch’s capability to mitigate the thermal effect, thus showing its promise for high-precision optical fabrication.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145982707","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

Inactivation of MCF-7 Cells by Plasma-Activated Solution Under Simulated Extracellular Fluid 模拟细胞外液作用下血浆活化液对MCF-7细胞失活的影响

IF 2.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-01-03 DOI: 10.1007/s11090-025-10635-3

Ruixuan Hui, Jiaxin Li, Meng Zhang, Guoqiang Liu, Tao Zhang, Dongping Liu, Na Lu

{"title":"Inactivation of MCF-7 Cells by Plasma-Activated Solution Under Simulated Extracellular Fluid","authors":"Ruixuan Hui, Jiaxin Li, Meng Zhang, Guoqiang Liu, Tao Zhang, Dongping Liu, Na Lu","doi":"10.1007/s11090-025-10635-3","DOIUrl":"10.1007/s11090-025-10635-3","url":null,"abstract":"<p>Plasma-activated solution (PAS), as an application of low-temperature atmospheric plasma, has received extensive attention due to the remarkable ability to inactivate cancer cells. Nevertheless, the preponderance of prior research has predominantly concentrated on the direct therapeutic intervention targeting cancer cells, thereby inadvertently neglecting the investigation into their inactivation processes within the complex human physiological microenvironment. In this paper, MCF-7 and human umbilical vein endothelial cells (HUVEC) are utilized in suppressed proliferation‌ experiments by PAS. The cell viability of MCF-7 was found to be 23% when 100 µL PAS treated the cells for 10 s alone. Simultaneously, it was found that the cell viability of HUVEC cells treated with PAS was 60% under the same experimental conditions. This indicated that HUVEC cells have a good resistance to PAS. Furthermore, culture medium(CM) was applied in this study to simulate the human internal environment in order to investigate the impact of the human internal environment on the inactivation of MCF-7 cells. The cell viability of MCF-7 cells is found to be 82% by 100 µL PAS at 110 s with in simulated human internal environment. Researches demonstrated that cysteine, methionine, phenylalanine, tyrosine, tryptophan, arginine and glucose in the CM can play a major role in the reduction of cells suppressed proliferation‌ efficacy, which is likely attributable to the presence of unstable functional groups within them. Approach of Increasing the dose of PAS to 450 µL resulted in the MCF-7 cell viability of 29% for 10 s treatment even though the human body environment suppresses the inactivation cancer cells by PAS. This research is anticipated to provide a reference for the inactivation of cancer cells by PAS in vivo.</p>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145886875","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

Investigating the Synergistic Effect of Nitric Oxide Plasma-treated Water and Curcumin on Apoptosis in Lung Cancer Cells via intrinsic and ATR/ATM/p53-Dependent Pathways: An In Vitro Study 一氧化氮血浆处理水和姜黄素通过内在和ATR/ATM/p53依赖途径对肺癌细胞凋亡的协同作用：一项体外研究

IF 2.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2026-01-03 DOI: 10.1007/s11090-025-10632-6

Khadija Akter, Jun Sup Lim, Eun Ha Choi

{"title":"Investigating the Synergistic Effect of Nitric Oxide Plasma-treated Water and Curcumin on Apoptosis in Lung Cancer Cells via intrinsic and ATR/ATM/p53-Dependent Pathways: An In Vitro Study","authors":"Khadija Akter, Jun Sup Lim, Eun Ha Choi","doi":"10.1007/s11090-025-10632-6","DOIUrl":"10.1007/s11090-025-10632-6","url":null,"abstract":"<div><p>Lung cancer characterized by its high prevalence and aggressive nature, poses a considerable threat to global health. Recognizing the pressing need for innovative therapeutic strategies, we investigated the synergistic effect and potential mechanisms of nitric oxide-enriched plasma-treated water (NO-PTW) and curcumin in lung cancer treatment. NO-PTW was prepared using a multi-electrode cylindrical dielectric barrier discharge (MC-DBD) plasma system with air-flowing gas. Fibroblasts (MRC-5) and cancerous cells (A549 and H460) were exposed to NO-PTW and curcumin alone and in combination, followed by various analyses. Cytotoxicity assay indicated that curcumin and NO-PTW co-treatment markedly suppressed A549 and H460 cells growth without adversely affecting normal cells. Additionally, there was a marked decline in intracellular adenosine triphosphate levels and a significant increase in dead cells following the combined therapy. Moreover, curcumin and NO-PTW co-treatment increased cell death, membrane permeability, and reactive oxygen and nitrogen species generation. Immunofluorescence staining showed increased γ-H2AX protein expression following the co-therapy, indicating DNA double-strand break in cancer cells. Curcumin and NO-PTW co-treatment significantly upregulated the mRNA expression of key genes associated with DNA damage <i>(ATR</i>,<i> ATM</i>,<i> Chk1</i>,<i> Chk2</i>, and <i>p53)</i> and apoptosis <i>(caspase-3</i>,<i> Bax</i>,<i> PARP</i>, and <i>caspase-8).</i> Mechanistically, curcumin and NO-PTW co-treatment influences cellular processes by stimulating the ATR/ATM/p53 pathway, as evidenced by significant changes in phosphorylation levels. Conclusively, these findings suggest that curcumin and NO-PTW co-treatment induces apoptosis in lung cancer cells, presenting a possible strategy to expanding cancer treatments.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145886874","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

Pyrolysis of Methane by Thermal Plasma: A 30 + year Journey and Start of an Industrial Transition 热等离子体热解甲烷：30多年的历程和工业转型的开始

IF 2.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2025-12-27 DOI: 10.1007/s11090-025-10625-5

Laurent Fulcheri, Enoch Dames, Vandad-Julien Rohani

{"title":"Pyrolysis of Methane by Thermal Plasma: A 30 + year Journey and Start of an Industrial Transition","authors":"Laurent Fulcheri, Enoch Dames, Vandad-Julien Rohani","doi":"10.1007/s11090-025-10625-5","DOIUrl":"10.1007/s11090-025-10625-5","url":null,"abstract":"<div><p>Methane pyrolysis by thermal plasma has been investigated for more than three decades as a promising route to produce CO₂-free hydrogen together with valuable carbon materials. This article is based on the plenary lecture delivered at the 26th International Symposium on Plasma Chemistry (ISPC-26, June 2023, Minneapolis) and distills the key scientific and technological advances achieved since the early 1990s. Topics include fundamentals of arc physics and thermodynamics, diagnostics and modeling of plasma–molecule interactions, and reactor engineering from laboratory to pilot scale. The extreme temperatures and rapid quench achievable in thermal plasmas enable fast CH₄ conversion and reveal radical-driven pathways for aromatic growth, particle nucleation, and carbon morphology control. Progress in arc stabilization, energy coupling, and residence-time management has improved conversion, selectivity, and carbon quality, while offering clearer scale-up criteria. Recent demonstrations indicate the onset of an industrial transition, targeting low-carbon hydrogen and engineered carbon (e.g. carbon black, nanotubes, nanofibers, graphene flakes…). We outline remaining challenges - plasma source efficiency, reliability, electrode lifetime, transport and mixing at scale, and standardized product characterization - and identify opportunities for process intensification and integration with renewables. By bridging fundamental plasma chemistry with applied reactor design, thermal-plasma methane pyrolysis emerges as a credible pathway to decarbonize hydrogen production and to manufacture high-value carbon materials.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145887038","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

Novel Jet Stability Evaluating Method for DC Plasma Torch 直流等离子炬射流稳定性评价新方法

IF 2.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2025-12-27 DOI: 10.1007/s11090-025-10634-4

Xiuquan Cao, Weiming Chen, Yunhao Liang, Xing Liu, Bin Li, Yufeng Tang

{"title":"Novel Jet Stability Evaluating Method for DC Plasma Torch","authors":"Xiuquan Cao, Weiming Chen, Yunhao Liang, Xing Liu, Bin Li, Yufeng Tang","doi":"10.1007/s11090-025-10634-4","DOIUrl":"10.1007/s11090-025-10634-4","url":null,"abstract":"<div><p>The jet stability of a DC plasma torch affects not only the service life of the torch but also processing consistency in industrial applications. To evaluate both instantaneous and longstanding jet stabilities of a plasma torch, a novel jet stability evaluation method has been developed in this study. The collected raw signals were first analyzed using the fast Fourier transform and filtered with identified characteristic frequencies. Based on the filtered signals, a 200 ms sliding window method was employed to evaluate the relative fluctuation of arc voltage in terms of both longstanding and instantaneous jet stabilities of the plasma torch. The results show that: (1) the proposed method can effectively evaluate both instantaneous and longstanding jet stability of a DC plasma torch; (2) the arc voltage and arc current signals contain a characteristic frequency, which is strongly influenced by the gas flow rate; (3) the laminar plasma torch operates stably at an arc current of 90 A, and its longstanding jet stability improves with increasing gas flow rate. The findings and proposed method provide informative guidance to those interested in the improvement of plasma jet stability and processing consistency.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11090-025-10634-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145887037","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

Fluorine Substitution and CO2 Production in the Treatment of Perfluorooctanoic Acid in a Radial Plasma Discharge Reactor 径向等离子体放电反应器处理全氟辛酸过程中的氟取代和CO2生成

IF 2.5 3区物理与天体物理

Plasma Chemistry and Plasma Processing Pub Date : 2025-12-23 DOI: 10.1007/s11090-025-10633-5

Giulia Tomei, Mubbshir Saleem, Filippo Scalvini, Cristina Paradisi, Ester Marotta

{"title":"Fluorine Substitution and CO2 Production in the Treatment of Perfluorooctanoic Acid in a Radial Plasma Discharge Reactor","authors":"Giulia Tomei, Mubbshir Saleem, Filippo Scalvini, Cristina Paradisi, Ester Marotta","doi":"10.1007/s11090-025-10633-5","DOIUrl":"10.1007/s11090-025-10633-5","url":null,"abstract":"<div><p>The paper reports and discusses the results of a detailed investigation of transient products and mineralization extent achieved in treatments of perfluorooctanoic acid (PFOA) in a radial plasma discharge reactor. The efforts were warranted by the excellent performance of this reactor in terms of process efficiency and by the need to verify that the quality of the treated water was of matching value. Minor amounts of transient products were detected and quantified, as a function of plasma treatment time, by means of LC/MS and LC/MS/MS analyses. These products arise from sequential chain-shortening, an established route for plasma induced PFOA degradation, and defluorination via fluorine substitution by -H and -OH groups. We focussed on the latter less known type of products (“substitution products”), which are formed in small amounts, cumulatively accounting, at any treatment time, for less than 2% of the total carbon content initially present as PFOA. In our system, hydroxy-containing substitution products with 8–6 carbon atoms are remarkably less reactive than their perfluoro- and hydro-substituted homologues, an effect attributed to improved solubility into the aqueous phase and removal from the plasma/liquid reactive interface. Mineralization extent and carbon mass balance were also determined by performing experiments with PFOA at high initial concentration (1∙10<sup>− 4</sup> M) to afford quantification of the CO<sub>2</sub> released into the gas phase by means of GC-TCD analysis. Despite the low rate of PFOA decomposition entailed by these abnormally high concentrations, remarkable carbon mass balance of 75% and mineralization extent of 67% were achieved in 90 min.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"46 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11090-025-10633-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145831072","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