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Catalysts
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Non-thermal Plasma-Assisted Catalytic Reactions for Environmental Protection II
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Non-thermal Plasma-Assisted Catalytic Reactions for Environmental Protection II

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Industrial Catalysis".

Deadline for manuscript submissions: closed (28 February 2023) | Viewed by 8493

Special Issue Editors

Dr. Giuseppina Iervolino

E-Mail Website
Guest Editor
Department of Industrial Engineering, University Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Salerno, Italy
Interests: heterogeneous catalysis; photocatalysis; non-thermal plasma; water treatment; advanced oxidation processes
Special Issues, Collections and Topics in MDPI journals
Dr. Vincenzo Vaiano

E-Mail Website
Co-Guest Editor
Department of Industrial Engineering, University Salerno, Via Giovanni Paolo 2 132, I-84084 Fisciano, Salerno, Italy
Interests: photocatalysis for sustainable chemistry; photocatalytic and photo-Fenton processes for pollutants removal in wastewater; catalytic combustion of sewage sludge; decomposition and oxidative decomposition of H2S; hydrolysis of COS in the liquid phase
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The research and application of non-thermal plasma have seen a significant increase in recent years, in various scientific fields. Plasma, ionized gas generated in discharges at atmospheric pressure, leads to a condition of thermodynamic instability which makes it "non-thermal". Thanks to its greater selectivity compared to systems based on thermal plasma, non-thermal plasma (NTP) is a very active research area dedicated to the intensification of chemical processes, and to environmental clean-up. In particular, a strong interest has emerged in improving the performance of NTP through the use of suitable catalysts inserted in specific reactor configurations. The study of the coupling of the catalyst to the NTP, of the positioning in the reactor, and consequently of the appropriate reactor configuration, is an interesting aspect that many scientists are addressing to improve the performance of NTP, with the main aim of increasing its energy efficiency. This Special Issue is titled "Non-thermal Plasma-Assisted Catalytic Reactions for Environmental Protection II". Research papers related to the most relevant results concerning the formulation of catalysts for use in non-thermal plasma reactors for water and wastewater treatment, the removal of gaseous pollutants, and the intensification of chemical reactions are welcome in this Special Issue of industrial interest.

Dr. Giuseppina Iervolino
Dr. Vincenzo Vaiano
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • catalytic non-thermal plasma
  • heterogeneous catalyst formulation
  • reactor configuration
  • pollutants removal

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Published Papers (3 papers)

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Research

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16 pages, 1369 KiB  
Article
Degradation of Antibiotic Vancomycin by UV Photolysis and Pulsed Corona Discharge Combined with Extrinsic Oxidants
by Dmitri Nikitin, Balpreet Kaur, Sergei Preis and Niina Dulova
Catalysts 2023, 13(3), 466; https://doi.org/10.3390/catal13030466 - 22 Feb 2023
Cited by 5 | Viewed by 2271
Abstract
Antibiotics are the most frequently detected pharmaceuticals in the environment creating conditions for the development of resistant genes in bacteria. Degradation and mineralization of glycopeptide antibiotic vancomycin (VMN) were examined by UV photolysis, pulsed corona discharge (PCD), and their combinations with extrinsic oxidants, [...] Read more.
Antibiotics are the most frequently detected pharmaceuticals in the environment creating conditions for the development of resistant genes in bacteria. Degradation and mineralization of glycopeptide antibiotic vancomycin (VMN) were examined by UV photolysis, pulsed corona discharge (PCD), and their combinations with extrinsic oxidants, hydrogen peroxide (HP), peroxydisulfate (PDS), and peroxymonosulfate (PMS). Both combinations were effective in VMN degradation and faster at pH 11 than in acidic or neutral media. Combined with the UV photolysis, HP showed a higher oxidation rate than other oxidants, whereas PMS and PDS proved to be more efficient in combinations with PCD. In contrast to low-to-moderate mineralization of VMN in the UV/oxidant combinations, PCD and PCD/oxidant combinations appeared to be more effective, reaching up to 90% of TOC removal in acidic/neutral solutions. Application of extrinsic oxidants resulted in an energy efficiency of VMN 90% oxidation improved from 36 to 61 g kW−1 h−1 in HP-assisted photolysis, and from 195 to 250 g kW−1 h−1 in PCD with additions of HP and PDS, thus showing the promising character of the combined treatment. Full article
(This article belongs to the Special Issue Non-thermal Plasma-Assisted Catalytic Reactions for Environmental Protection II)
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16 pages, 4737 KiB  
Article
Emission Spectroscopy of CH4/CO2 Mixtures Processed in a Non-Thermal Plasma Augmented Burner
by Ernest Bykov, Nerijus Striūgas and Rolandas Paulauskas
Catalysts 2022, 12(12), 1540; https://doi.org/10.3390/catal12121540 - 30 Nov 2022
Cited by 4 | Viewed by 1922
Abstract
The need for energy resources that do not belong to the group of fossil fuels and a wide availability of various low-calorific gases leads humanity to search for solutions to adapt external sources of force that would allow for the use of these [...] Read more.
The need for energy resources that do not belong to the group of fossil fuels and a wide availability of various low-calorific gases leads humanity to search for solutions to adapt external sources of force that would allow for the use of these resources. One of such solutions is the usage of non-thermal plasma applications for pre-ignition stage, ignition, and, finally, combustion. Plasma assistance is a promising technology for improving processes of ignition and flame stabilization, as well as propagating flame speed. This study focuses on influence of the non-thermal plasma on both for CH4, CO2 gases, and their mixture in pre-ignition stage by performing emission spectroscopy, and determining tendency of excited species at different frequency rates for optimal plasma parameters to reduce NO formation and increase efficiency during combustion. The results obtained exhibit a non-linear dependence of radical’s emission from the frequency of plasma. As an example of possible profits from correctly choosing plasma parameters, the calorific value of gases increased from 2.86 times for BG25/75 to 4.78 times for BG30/70. However, the decomposition on higher frequencies causes higher rates of nitrogen-bands emissions, which would increase NOx emissions in the combustion process. Full article
(This article belongs to the Special Issue Non-thermal Plasma-Assisted Catalytic Reactions for Environmental Protection II)
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Review

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44 pages, 5539 KiB  
Review
Review on the Biomedical and Environmental Applications of Nonthermal Plasma
by Sohail Mumtaz, Rizwan Khan, Juie Nahushkumar Rana, Rida Javed, Madeeha Iqbal, Eun Ha Choi and Ihn Han
Catalysts 2023, 13(4), 685; https://doi.org/10.3390/catal13040685 - 31 Mar 2023
Cited by 41 | Viewed by 3820
Abstract
Recent advances in atmospheric plasmas have led to the formation of nonthermal plasma (NTP). In recent decades, a number of novel plasma diagnostic approaches have been implemented and reported in order to better understand the physics of NTP. The use of NTP is [...] Read more.
Recent advances in atmospheric plasmas have led to the formation of nonthermal plasma (NTP). In recent decades, a number of novel plasma diagnostic approaches have been implemented and reported in order to better understand the physics of NTP. The use of NTP is a novel approach to producing reactive oxygen and nitrogen species. Plasma technology has many applications, including electrical device microfabrication, biomedicine, dentistry, agriculture, ozone generation, chemical synthesis, surface treatment, coating, and disease therapy. Furthermore, NTP is thought to be a successful strategy for the degradation of hazardous pollutants in the environment, making it a future hope. Recent studies showed that various operating parameters affect the yield of NTP-based technology. Especially, the presence of a catalyst, properly placed in an NTP reactor, leads to a significant increase in process performance as compared to NTP alone. Scientists have looked at using NTP in conjunction with catalysts to remove various sorts of pollutants from the environment. In this context, review articles are crucial due to the prevalence of NTP-based applications and ongoing developments. This review will describe recent advancements in NTP-based biomedical applications, bacterial inactivation, food preservation and storage, and environmental catalytic formulations. This review could be useful in providing a platform for advancements in biological applications and environmental protection through the use of NTP technology. Full article
(This article belongs to the Special Issue Non-thermal Plasma-Assisted Catalytic Reactions for Environmental Protection II)
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