Evaluation of Ozone Generation in Volume Spiral-Tubular Dielectric Barrier Discharge Source

Żyłka, P.

doi:10.3390/en13051199

Cited by 10 publications

(5 citation statements)

References 21 publications

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“…First described by Siemens [1] and, independently by Du Moncel [2] in the 1850s, DBDs have opened up a wide area of applications. To mention a few, DBDs are utilized at the generation of ozone [1,3,4], to treat textiles [5], surfaces [6][7][8], liquids [9], and in the case of CO 2 conversion [10,11] as a potential key element to combat climate change. The growing interest in DBDs and the exploration of new applications has led to a great variety of DBD designs and configurations [12].…”

Section: Introductionmentioning

confidence: 99%

Expansion of surface barrier discharge scrutinized

Lindner

Pipa²,

Brandenburg³

et al. 2022

Plasma Sources Sci. Technol.

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Developing the fundamentals for the electrical diagnostics of surface dielectric barrier discharges (SDBDs) is of enormous importance for several applications, for example, ﬂow control and gas cleaning. The main challenge is to account for the discharge expansion along the dielectric surface. Typically, a linear expansion with the amplitude of the applied voltage is observed. In this work, we report on a step-wise SDBD expansion along the Al2O3 dielectric surface. More speciﬁc, the discharge occupied a certain area after ignition, which remained constant until the voltage exceeded the critical amplitude VL. This absence of expansion is seen as a linear dependence of the discharge power on the applied voltage and it was additionally conﬁrmed by photographs with long exposure times. This novel phenomenon is more pronounced for thicker dielectrics. It is suggested that the derivative of the charge-voltage characteristics can be used for the determination of all essential parameters of the simplest equivalent circuit of SDBDs. Moreover, it was shown that the derivative of the charge-voltage characteristics for the positive half-cycle of the discharge agrees numerically with the voltage dependence of the reactor capacitance derived from photographs. This agreement between both measurement methods indicates a similar step-wise expansion of the SDBD even if a voltage amplitude above VL is applied.

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Section: Introductionmentioning

confidence: 99%

Expansion of surface barrier discharge scrutinized

Lindner

Pipa²,

Brandenburg³

et al. 2022

Plasma Sources Sci. Technol.

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“…DBD is generally considered a low-temperature plasma oxidation technology due to its operation under ambient conditions (at room temperature and atmosphere). DBD has been extensively utilized in many applications such as catalyst preparation and modification, − surface modification of nanofibers, pollutant control (wastewater purification and engine exhaust control), − ozone generation, , hydrogen production from the reforming of biogas, oxygen reduction reaction of electrocatalysts, removal of volatile organic compounds (VOCs), , and remediation of pyrene and ciprofloxacin contaminated soil. − Recently, DBD was employed to eliminate the template from mesoporous materials, − particularly SBA-15. , The DBD plasma technology can be categorized into single dielectric-barrier discharge (SDBD) and double dielectric-barrier discharge (DDBD).…”

Section: Template Removal Approachesmentioning

confidence: 99%

Review on Template Removal Techniques for Synthesis of Mesoporous Silica Materials

Ghaedi

Zhao

2022

Energy Fuels

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The key step in the preparation of mesoporous silica materials is the removal of organic templates occluded inside the pores including nonionic, cationic, anionic surfactants and even ionic liquid (IL). The most common method to remove templates is conventional calcination under air at 550 °C. Although templates can be completely removed from the pores, calcination suffers many serious drawbacks including significant framework shrinkage, the collapse of the ordered structure, reduction of silanol concentrations on the pore wall (which are of high importance for postmodification), generation of large amounts of CO 2 and organic amine compounds, the presence of carbon deposits or coke as a contaminant, elimination of organic functionalities (such as organoalkoxysilanes with amino groups), and the inability to recover or reuse expensive organic templates. That is why many attempts have been reported in the literature to develop novel methods for removing organic templates that are favorable from both economic and environmental standpoints for potentially large-scale applications. The current study reviews the recent development methods for template removal from various types of mesoporous silica materials. We have divided the template removal approaches into two categories: physical method and chemical method. The effects of those methods are discussed in detail on the textural and structural properties of mesoporous silica materials along with the template removal mechanism and their pores and coins.

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“…The most commonly employed methods include the corona-discharge method, dielectric barrier discharge method (DBD), and UV radiation, and the generation is mostly done on-site because of its relatively short half-life (Homola et al, 2019;Pandiselvam et al, 2017). Corona discharge occurs in a strong nonuniform electric field when the dielectric strength of a discharge gap is exceeded, resulting in the excitation of oxygen molecules, which eventually leads to the appearance of ozone (Zylka, 2020). Similarly, DBD also represents an electrical discharge except that a layered F I G U R E 1 Ozone generation by corona discharge and water electrolysis for food treatment barrier insulation arrangement comprising solid dielectric is involved.…”

Section: Aqueous Ozone Generation and Its Chemistrymentioning

confidence: 99%

Aqueous ozone: Chemistry, physiochemical properties, microbial inactivation, factors influencing antimicrobial effectiveness, and application in food

Premjit

Sruthi

Pandiselvam

et al. 2022

Comp Rev Food Sci Food Safe

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The need for sustainable food production and the demand for fresh and minimally processed foods have prompted remarkable research in novel food processing technologies that ensure safe and shelf‐stable food for a large population. Long‐established techniques such as heating, drying, and freezing have been associated with nutrient loss and high energy consumption. This trend has drawn attention to the practice of employing ozone in several food applications owing to its significant disinfectant and antimicrobial efficiency. The aqueous form of ozone has been found to show greater efficacy than its gaseous form, with faster decomposition rates leaving no harmful residues. The current study presents an overview of the latest scientific literature on the properties, chemistry, and generation of aqueous ozone, emphasizing the factors affecting process efficiency. The review scrupulously focuses on food decontamination, starch modification, pesticide degradation, and seed germination effects of aqueous ozone, highlighting the optimum processing parameters and salient findings of some major studies. A brief insight into the limitations and future trends has also been presented. Aqueous ozone has been acclaimed to have the potential to cause significant changes in the food matrix that could result in constructive modifications with outcomes entirely dependent on the processing conditions. Indirect and direct reactions involving hydroxyl radical and molecular oxygen atoms, respectively, form the basis of the ozone reaction in aqueous media, providing a distinctive kind of advanced oxidation process that offers certain crucial benefits. With a shorter half‐life in water as compared to air, the rapid decomposition of aqueous ozone to oxygen, leaving no harmful residues, adds to its advantages.

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Evaluation of Ozone Generation in Volume Spiral-Tubular Dielectric Barrier Discharge Source

Cited by 10 publications

References 21 publications

Expansion of surface barrier discharge scrutinized

Expansion of surface barrier discharge scrutinized

Review on Template Removal Techniques for Synthesis of Mesoporous Silica Materials

Aqueous ozone: Chemistry, physiochemical properties, microbial inactivation, factors influencing antimicrobial effectiveness, and application in food

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