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Prof. Mariusz Jasiński
Centre for Plasma and Laser Engineering, The Szewalski Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14 St., 80-231 Gdańsk, Poland

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0 Plasma Diagnostics
0 Microwave Plasma
0 plasma applications
0 Microwave discharges
0 production of hydrogen by plasmas

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Microwave Plasma
production of hydrogen by plasmas
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Short Biography

Dr. Mariusz Jasiński is a graduate of the Faculty of Technical Physics and Applied Mathematics at Gdańsk University of Technology. The M.Sc. degree in technical physics he achieved in 1997. Doctoral degree in technical sciences he defended in 2003 at the Institute of Fluid Flow Machinery of the Polish Academy of Sciences, where he is currently working. He received D.Sc. degree in technical sciences from the Lublin University of Technology (Faculty of Electrical Engineering and Computer Science) in 2015. On 1 January 2006, he was appointed head of the Department of Plasma Electrodynamics in the Centre for Plasma and Laser Engineering at the Institute of Fluid Flow Machinery of the Polish Academy of Sciences. In 2009, the unit has changed its name to the Department of Hydrogen Energy, which Dr. Jasinski still directs. In 2015 he was appointed associate professor at the Institute of Fluid Flow Machinery of the Polish Academy of Sciences. His research focused on the development of microwave plasma sources, plasma diagnostics based on spectroscopic techniques, and applications of plasma techniques in the energetics, electronics, surface engineering and environmental protection. Dr. Jasinski is the author of 96 publications in journals (including 72 papers from the JCR list – IF ~100). He is guest editor of special editions ("The Applications of Plasma Techniques" and "The Applications of Plasma Techniques II") of the journal "Applied Sciences", based in Basel, Switzerland.

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Accepted manuscript
Published: 18 March 2021 in Plasma Sources Science and Technology
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Efficient conversion of the microwave energy into an argon plasma in a microwave plasma sheet source (MPSS) operating at 2.45 GHz in atmospheric-pressure air is the subject of this work. The MPSSs, capable of providing an atmospheric pressure plasma in the shape of a narrow sheet are an innovative technology for variety of surface treatments with no impact on the environment. The existing designs of the MPSS exhibit unsatisfactory efficiency of the conversion of microwave energy produced by the microwave source into the microwave plasma. A relatively low microwave energy conversion efficiency (about 80 %) in the current MPSSs hinders implementation of the MPSSs in the industry. The goal of this work was optimization of the use of microwave source energy for production of the microwave plasma. In this paper, after some analytical approach based on the equivalent electrical circuit method we proposed an optimization of the design of MPSS in terms of the microwave energy conversion efficiency. The MPSS design improvement consisted in reducing the input electrical impedance in the input plane of the MPSS by introducing into the MPSS transmission line a capacitive diaphragm, compensating the inductive character of the plasma sheet. The experimental measurement of the electrodynamic characteristics of the MPSS with diaphragm showed that using the diaphragm significantly decreased the microwave power losses due to the microwave reflection from about (20-30) % to a level of several percent, which is acceptable in the industry. This substantially increased the MPSS energy conversion efficiency up to about 97 %, 93% and 87% for incident powers PI of 500 W, 750 W and 1000 W, respectively. The electrodynamic characteristics of the MPSS appeared a very convenient tool for determining the conditions of maximum efficiency of conversion of the microwave energy into the microwave plasma.

ACS Style

Robert Miotk; Mariusz Jasiński; Jerzy Mizeraczyk. An improved conversion of the microwave energy into plasma in an optimized microwave plasma sheet source at 2.45 GHz designed for surface treatment. Plasma Sources Science and Technology 2021, 30, 055006 .

AMA Style

Robert Miotk, Mariusz Jasiński, Jerzy Mizeraczyk. An improved conversion of the microwave energy into plasma in an optimized microwave plasma sheet source at 2.45 GHz designed for surface treatment. Plasma Sources Science and Technology. 2021; 30 (5):055006.

Chicago/Turabian Style

Robert Miotk; Mariusz Jasiński; Jerzy Mizeraczyk. 2021. "An improved conversion of the microwave energy into plasma in an optimized microwave plasma sheet source at 2.45 GHz designed for surface treatment." Plasma Sources Science and Technology 30, no. 5: 055006.

Journal article
Published: 28 September 2020 in Applied Sciences
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Current industry needs are related to higher awareness of modern consumers. These consumers are looking for products in which properties such as bioactive compounds are preserved as much as possible. Plasma treatment is one of the most promising nonthermal technologies that can decontaminate food and keep its original properties. Therefore, the aim of this work was to examine the usefulness of atmospheric pressure argon microwave plasma on decontamination of black pepper seeds, allspice berries and juniper berries. The samples were irradiated by plasma for 15–60 s and their physicochemical (dry matter content, water activity, color, total phenolic content, antioxidant activity, piperine content in black pepper seeds) and microbial (bacteria and molds count) quality was evaluated afterwards. Results demonstrated that plasma irradiation for 15 s was sufficient for partial inactivation of A. niger but less effective against the Gram-positive bacterium B. subtilis, regardless of the raw material. At the same time, plasma treatment reduced water activity, which can positively affect further storage of spices. Properly selected plasma parameters may also enhance extractability of phenolics or piperine (from black pepper seeds) and improve antioxidant activity with not very great, but visible, color changes.

ACS Style

Artur Wiktor; Bartosz Hrycak; Mariusz Jasiński; Katarzyna Rybak; Marek Kieliszek; Karolina Kraśniewska; Dorota Witrowa-Rajchert. Impact of Atmospheric Pressure Microwave Plasma Treatment on Quality of Selected Spices. Applied Sciences 2020, 10, 6815 .

AMA Style

Artur Wiktor, Bartosz Hrycak, Mariusz Jasiński, Katarzyna Rybak, Marek Kieliszek, Karolina Kraśniewska, Dorota Witrowa-Rajchert. Impact of Atmospheric Pressure Microwave Plasma Treatment on Quality of Selected Spices. Applied Sciences. 2020; 10 (19):6815.

Chicago/Turabian Style

Artur Wiktor; Bartosz Hrycak; Mariusz Jasiński; Katarzyna Rybak; Marek Kieliszek; Karolina Kraśniewska; Dorota Witrowa-Rajchert. 2020. "Impact of Atmospheric Pressure Microwave Plasma Treatment on Quality of Selected Spices." Applied Sciences 10, no. 19: 6815.

Conference paper
Published: 01 May 2019 in 2019 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO)
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This work presents original concepts of describing the electrodynamic properties of a microwave plasma source by an equivalent circuit. The main goal of this work was to investigate the electrodynamic characteristics of a 2.45 GHz microwave plasma sheet source. The aim was achieved by performing experimental measurements which were then supplemented with calculations of the electrodynamic characteristics of the device using the equivalent circuit method. The experimental measurements allowed the energy efficiency of the presented plasma source to be assessed, while the calculations allowed the impedance of the generated plasma to be estimated. Additionally, the method of using an equivalent circuit provided the opportunity to determine the dimensions of a diaphragm whose introduction would improve the energy efficiency of the device.

ACS Style

Robert Miotk; Mariusz Jasinski; Mariusz Jasiński. Investigation of the electrodynamic characteristics of 2.45 GHz microwave plasma sheet source. 2019 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) 2019, 1 -4.

AMA Style

Robert Miotk, Mariusz Jasinski, Mariusz Jasiński. Investigation of the electrodynamic characteristics of 2.45 GHz microwave plasma sheet source. 2019 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO). 2019; ():1-4.

Chicago/Turabian Style

Robert Miotk; Mariusz Jasinski; Mariusz Jasiński. 2019. "Investigation of the electrodynamic characteristics of 2.45 GHz microwave plasma sheet source." 2019 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) , no. : 1-4.

Journal article
Published: 22 January 2019 in IEEE Transactions on Plasma Science
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The characterization of an atmospheric pressure microwave argon plasma in the form of a plasma sheet and the results of its use in the investigation of the wettability modification of polyethylene (PE) surfaces are presented in this paper. The spectroscopic investigations performed indicate a plasma temperature at the level of 750-1100 K and an electron density at the level of 2.9-5.4 x 10¹⁴ cm⁻³. The following PE-type specially prepared materials were subjected to the plasma treatment process: PE (pure low-density PE), PE + UV (PE with a UV stabilizer), PE - UV + M (with a UV stabilizer and a montmorillonite), PE + S (PE with soot), and PE - F (PE with a UV stabilizer, a montmorillonite, and soot). The experimental investigations prove the high potential of the presented method for the PE surface activation in industrial applications. The atomic force microscopy scanning of samples was performed before and after the plasma treatment. The aging of the adhesion enhancement effect indicates that the water contact angle is related to the surface energy changes.

ACS Style

Bartosz Hrycak; Andrzej Sikora; Magdalena Moczala; Dariusz Czylkowski; Mariusz Jasinski; Miroslaw Dors. Atmospheric Pressure Microwave Argon Plasma Sheet for Wettability Modification of Polyethylene Surfaces. IEEE Transactions on Plasma Science 2019, 47, 1309 -1315.

AMA Style

Bartosz Hrycak, Andrzej Sikora, Magdalena Moczala, Dariusz Czylkowski, Mariusz Jasinski, Miroslaw Dors. Atmospheric Pressure Microwave Argon Plasma Sheet for Wettability Modification of Polyethylene Surfaces. IEEE Transactions on Plasma Science. 2019; 47 (2):1309-1315.

Chicago/Turabian Style

Bartosz Hrycak; Andrzej Sikora; Magdalena Moczala; Dariusz Czylkowski; Mariusz Jasinski; Miroslaw Dors. 2019. "Atmospheric Pressure Microwave Argon Plasma Sheet for Wettability Modification of Polyethylene Surfaces." IEEE Transactions on Plasma Science 47, no. 2: 1309-1315.

Journal article
Published: 19 October 2018 in International Journal of Hydrogen Energy
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Liquid ethanol introduced as microdroplets into the tip of microwave nitrogen plasma, operating at 2.45 GHz under atmospheric pressure, has been investigated. Injection of ethanol outside the region of plasma generation eliminated a problem of soot formation at that region, which was responsible for short reactor lifetime. Using liquid ethanol allows to save energy needed for vaporization. Hydrogen, carbon monoxide and solid carbon were the main outlet products. Other products detected with gas chromatography were CH4, C2H4 and C2H2. The best results concerning hydrogen production were as follows: concentration in the outlet gas up to 28%, production rate up to 1043 L/h, energy yield up to 209 L per kWh of microwave power, and were obtained for liquid C2H5OH flow rate of 3.7 L/h. A numerical 0D model was used to determine contributions of chemical reactions in formation of measured gaseous products. Simplified model involving only radical reactions without any ions and electrons predicts final concentrations of main compounds quite well for microwave power up to 4 kW.

ACS Style

Dariusz Czylkowski; Bartosz Hrycak; Mariusz Jasiński; Miroslaw Dors; Jerzy Mizeraczyk. Hydrogen production by direct injection of ethanol microdroplets into nitrogen microwave plasma flame. International Journal of Hydrogen Energy 2018, 43, 21196 -21208.

AMA Style

Dariusz Czylkowski, Bartosz Hrycak, Mariusz Jasiński, Miroslaw Dors, Jerzy Mizeraczyk. Hydrogen production by direct injection of ethanol microdroplets into nitrogen microwave plasma flame. International Journal of Hydrogen Energy. 2018; 43 (46):21196-21208.

Chicago/Turabian Style

Dariusz Czylkowski; Bartosz Hrycak; Mariusz Jasiński; Miroslaw Dors; Jerzy Mizeraczyk. 2018. "Hydrogen production by direct injection of ethanol microdroplets into nitrogen microwave plasma flame." International Journal of Hydrogen Energy 43, no. 46: 21196-21208.

Accepted manuscript
Published: 17 July 2018 in Plasma Sources Science and Technology
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Typically, microwave plasma sources (MPSs) operated at atmospheric pressure delivers plasmas in the common forms of flames or cylindrical columns. In contrast to that, in this paper a novel MPS (recently patented by us) for generating a new type of plasma in the form of a plasma sheet which is sustained within dielectric flat cuboid box is presented. It is waveguide-based, operated at frequency of 2.45 GHz and in argon at atmospheric pressure. The plasma sheet consists of many filaments, typical for a microwave argon plasma. The MPS is described and analysed in terms of optical emission spectroscopy, simulations of the electric field distributions in the MPS and numerical modelling of the working gas flow. Depending on the argon flow rate and absorbed microwave power the determined electron density and rotational temperatures of OH radicals ranged from 3.6×1014 to 5.6×1014 cm-3 and from 800 to 1250 K, respectively. Numerical simulations have confirmed that the dimensions of the box are chosen correctly to ensure a sufficiently homogeneous distribution of the gas flow velocity field. Calculated electromagnetic field distributions in the MPS with plasma have shown that the device is well matched to the feeding line. Relative simplicity of the presented plasma source and the industrially convenient plasma shape make the presented source attractive for practical applications in the surface treatment of various materials.

ACS Style

Helena Nowakowska; Dariusz Czylkowski; Bartosz Hrycak; Mariusz Jasiński. Characterization of a novel microwave plasma sheet source operated at atmospheric pressure. Plasma Sources Science and Technology 2018, 27, 085008 .

AMA Style

Helena Nowakowska, Dariusz Czylkowski, Bartosz Hrycak, Mariusz Jasiński. Characterization of a novel microwave plasma sheet source operated at atmospheric pressure. Plasma Sources Science and Technology. 2018; 27 (8):085008.

Chicago/Turabian Style

Helena Nowakowska; Dariusz Czylkowski; Bartosz Hrycak; Mariusz Jasiński. 2018. "Characterization of a novel microwave plasma sheet source operated at atmospheric pressure." Plasma Sources Science and Technology 27, no. 8: 085008.

Accepted manuscript
Published: 01 March 2018 in Plasma Sources Science and Technology
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This paper presents the partial electromagnetic optimisation of a 2.45 GHz cylindrical-type microwave plasma source (MPS) operated at atmospheric pressure. The presented device is designed for hydrogen production from liquid fuels e.g.: hydrocarbons, alcohols. Due to industrial requirements regarding low costs for hydrogen produced in this way, previous testing indicated that improvements were required to the electromagnetic performance of the MPS. The MPS has a duct discontinuity region, which is a result of the cylindrical structure located within the device. Farther, in this discontinuity region the microwave plasma is generated. Rigorous analysis of the region requires solving a set of Maxwell equations, which is burdensome for complicated structures. Furthermore, the presence of the microwave plasma increases the complexity of this task. To avoid calculating the complex Maxwell equations, we suggest the use of the equivalent circuit method. This work is based upon the idea of using a Weissfloch circuit to characterize the area of the duct discontinuity and the plasma. The resulting MPS equivalent circuit allowed the calculation of a capacitive metallic diaphragm, through which an improvement in the electromagnetic performance of the plasma source was obtained.

ACS Style

Robert Miotk; M Jasiński; Jerzy Mizeraczyk. Electromagnetic optimisation of a 2.45 GHz microwave plasma source operated at atmospheric pressure and designed for hydrogen production. Plasma Sources Science and Technology 2018, 27, 035011 .

AMA Style

Robert Miotk, M Jasiński, Jerzy Mizeraczyk. Electromagnetic optimisation of a 2.45 GHz microwave plasma source operated at atmospheric pressure and designed for hydrogen production. Plasma Sources Science and Technology. 2018; 27 (3):035011.

Chicago/Turabian Style

Robert Miotk; M Jasiński; Jerzy Mizeraczyk. 2018. "Electromagnetic optimisation of a 2.45 GHz microwave plasma source operated at atmospheric pressure and designed for hydrogen production." Plasma Sources Science and Technology 27, no. 3: 035011.

Journal article
Published: 01 March 2018 in Fuel
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Growing interest has recently been observed in hydrogen production and storage technologies. Proposed here is a catalyst-free method of hydrogen-enriched gas production by decomposition of kerosene vapour in a carbon dioxide microwave (915 MHz) plasma system operating at atmospheric pressure. The results are given for both experimental and theoretical investigations. The roles analysed included the energy supply to the microwave plasma, the kerosene flow rate and the carbon dioxide flow rate, on the concentrations of gaseous compounds resulting from the kerosene processing. Carbon dioxide, hydrogen, carbon monoxide, methane, acetylene and ethylene all occurred as gaseous by-products. It was observed that 470 NL of hydrogen could be obtained from 1 L of kerosene at an absorbed microwave power of 6 kW. The results confirm the capability of an atmospheric pressure microwave plasma system in decomposing kerosene in the production of hydrogen-enriched gas.

ACS Style

Dariusz Czylkowski; Bartosz Hrycak; Robert Miotk; Mariusz Jasiński; Mirosław Dors; Jerzy Mizeraczyk. Hydrogen-enriched gas production from kerosene using an atmospheric pressure microwave plasma system. Fuel 2018, 215, 686 -694.

AMA Style

Dariusz Czylkowski, Bartosz Hrycak, Robert Miotk, Mariusz Jasiński, Mirosław Dors, Jerzy Mizeraczyk. Hydrogen-enriched gas production from kerosene using an atmospheric pressure microwave plasma system. Fuel. 2018; 215 ():686-694.

Chicago/Turabian Style

Dariusz Czylkowski; Bartosz Hrycak; Robert Miotk; Mariusz Jasiński; Mirosław Dors; Jerzy Mizeraczyk. 2018. "Hydrogen-enriched gas production from kerosene using an atmospheric pressure microwave plasma system." Fuel 215, no. : 686-694.

Journal article
Published: 12 December 2017 in The European Physical Journal D
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Reforming of gaseous and liquid hydrocarbon compounds into hydrogen is of high interest. In this paper we present a microwave (2.45 GHz) plasma-based method for hydrogen production by conversion of ethanol (C2H5OH) in the thermal reforming process in nitrogen plasma. In contrast to our earlier investigations, in which C2H5OH vapour was supplied into the microwave plasma region either in the form of a swirl or axial flow, in this experiment we injected C2H5OH vapour directly into the nitrogen microwave plasma flame, behind the microwave plasma generation region. The experimental results were as follows. At an absorbed microwave power of 5 kW, N2 (plasma-generating gas) swirl flow rate of 2700 NL(N2)/h and C2H5OH mass flow rate of 2.7 kg(C2H5OH)/h the hydrogen production rate was 1016 NL(H2)/h, which corresponds to the energy yield of hydrogen production 203 NL(H2)/kWh. After the C2H5OH conversion the outlet gas contained 27.6% (vol.) H2, 10.2% CO, 0.2% CO2, 4.8% CH4, 4.3% C2H2, 3.7% C2H4 and 3.7% C2H6. These results are comparable to those obtained in our earlier investigations, in which different methods of C2H5OH vapour supply to the microwave plasma generation region were employed.

ACS Style

Dariusz Czylkowski; Bartosz Hrycak; Mariusz Jasiński; Miroslaw Dors; Jerzy Mizeraczyk. Hydrogen production by conversion of ethanol injected into a microwave plasma. The European Physical Journal D 2017, 71, 321 .

AMA Style

Dariusz Czylkowski, Bartosz Hrycak, Mariusz Jasiński, Miroslaw Dors, Jerzy Mizeraczyk. Hydrogen production by conversion of ethanol injected into a microwave plasma. The European Physical Journal D. 2017; 71 (12):321.

Chicago/Turabian Style

Dariusz Czylkowski; Bartosz Hrycak; Mariusz Jasiński; Miroslaw Dors; Jerzy Mizeraczyk. 2017. "Hydrogen production by conversion of ethanol injected into a microwave plasma." The European Physical Journal D 71, no. 12: 321.

Journal article
Published: 07 December 2017 in IEEE Transactions on Microwave Theory and Techniques
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An improvement in the energy transfer in a cavity-type microwave plasma source (MPS) operated at 915 MHz by a better design of the device, capable of ensuring a high microwave power coupling from the supply line to the sustained plasma was a goal of this paper. Our approach was twofold. First, numerical simulations of an electromagnetic field distribution inside a typical cavity-type MPS were carried out. The standard model of homogeneous plasma generated by the MPS and the two-port method was combined. This enabled estimating the concentration ne and collisions frequency $\nu $ of electrons in the plasma. Based on these data, a more energy efficient MPS could be designed. Second, to verify the numerical prediction, a modified version of the MPS was built and the improvement in the MPS energy efficiency was proved experimentally.

ACS Style

Robert Miotk; Mariusz Jasinski; Jerzy Mizeraczyk; Mariusz Jasiński. Improvement of Energy Transfer in a Cavity-Type 915-MHz Microwave Plasma Source. IEEE Transactions on Microwave Theory and Techniques 2017, 66, 711 -716.

AMA Style

Robert Miotk, Mariusz Jasinski, Jerzy Mizeraczyk, Mariusz Jasiński. Improvement of Energy Transfer in a Cavity-Type 915-MHz Microwave Plasma Source. IEEE Transactions on Microwave Theory and Techniques. 2017; 66 (2):711-716.

Chicago/Turabian Style

Robert Miotk; Mariusz Jasinski; Jerzy Mizeraczyk; Mariusz Jasiński. 2017. "Improvement of Energy Transfer in a Cavity-Type 915-MHz Microwave Plasma Source." IEEE Transactions on Microwave Theory and Techniques 66, no. 2: 711-716.

Research article
Published: 01 December 2017 in Journal of Spectroscopy
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The paper presents the investigations of an atmospheric-pressure argon plasma generated at 915 MHz microwaves using the optical emission spectroscopy (OES). The 915 MHz microwave plasma was inducted and sustained in a waveguide-supplied coaxial-line-based nozzleless microwave plasma source. The aim of presented investigations was to estimate parameters of the generated plasma, that is, excitation temperature of electrons Texc, temperature of plasma gas Tg, and concentration of electrons ne. Assuming that excited levels of argon atoms are in local thermodynamic equilibrium, Boltzmann method allowed in determining the Texc temperature in the range of 8100–11000 K. The temperature of plasma gas Tg was estimated by comparing the simulated spectra of the OH radical to the measured one in LIFBASE program. The obtained Tg temperature ranged in 1200–2800 K. Using a method based on Stark broadening of the Hβ line, the concentration of electrons ne was determined in the range from 1.4 × 1015 to 1.7 × 1015 cm−3, depending on the power absorbed by the microwave plasma.

ACS Style

Robert Miotk; Bartosz Hrycak; Mariusz Jasiński; Jerzy Mizeraczyk. Characterization of an Atmospheric-Pressure Argon Plasma Generated by 915 MHz Microwaves Using Optical Emission Spectroscopy. Journal of Spectroscopy 2017, 2017, 1 -6.

AMA Style

Robert Miotk, Bartosz Hrycak, Mariusz Jasiński, Jerzy Mizeraczyk. Characterization of an Atmospheric-Pressure Argon Plasma Generated by 915 MHz Microwaves Using Optical Emission Spectroscopy. Journal of Spectroscopy. 2017; 2017 ():1-6.

Chicago/Turabian Style

Robert Miotk; Bartosz Hrycak; Mariusz Jasiński; Jerzy Mizeraczyk. 2017. "Characterization of an Atmospheric-Pressure Argon Plasma Generated by 915 MHz Microwaves Using Optical Emission Spectroscopy." Journal of Spectroscopy 2017, no. : 1-6.

Conference paper
Published: 01 May 2017 in 2017 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO)
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In this work the electrodynamic characterization of a cavity-type microwave plasma source (MPS) operated at 915 MHz was presented. The work was aimed at finding a better design of the MPS for ensuring a higher microwave power energy transfer from the microwave feeding line to the sustained plasma. In this analysis a standard model of microwave plasma and two-port method, developed by Nowakowska et al., supported with one-time simulation of the electric field distribution inside the MPS with plasma, was used.

ACS Style

Robert Miotk; Mariusz Jasinski; Jerzy Mizeraczyk; Mariusz Jasiński. Electrodynamic characterization of a cavity-type microwave plasma source. 2017 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO) 2017, 176 -178.

AMA Style

Robert Miotk, Mariusz Jasinski, Jerzy Mizeraczyk, Mariusz Jasiński. Electrodynamic characterization of a cavity-type microwave plasma source. 2017 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO). 2017; ():176-178.

Chicago/Turabian Style

Robert Miotk; Mariusz Jasinski; Jerzy Mizeraczyk; Mariusz Jasiński. 2017. "Electrodynamic characterization of a cavity-type microwave plasma source." 2017 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO) , no. : 176-178.

Journal article
Published: 01 October 2016 in Energy
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ACS Style

Dariusz Czylkowski; Bartosz Hrycak; Mariusz Jasiński; Miroslaw Dors; Jerzy Mizeraczyk. Microwave plasma-based method of hydrogen production via combined steam reforming of methane. Energy 2016, 113, 653 -661.

AMA Style

Dariusz Czylkowski, Bartosz Hrycak, Mariusz Jasiński, Miroslaw Dors, Jerzy Mizeraczyk. Microwave plasma-based method of hydrogen production via combined steam reforming of methane. Energy. 2016; 113 ():653-661.

Chicago/Turabian Style

Dariusz Czylkowski; Bartosz Hrycak; Mariusz Jasiński; Miroslaw Dors; Jerzy Mizeraczyk. 2016. "Microwave plasma-based method of hydrogen production via combined steam reforming of methane." Energy 113, no. : 653-661.

Journal article
Published: 08 August 2016 in The European Physical Journal Applied Physics
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ACS Style

Jerzy Mizeraczyk; Mariusz Jasiński. Plasma processing methods for hydrogen production. The European Physical Journal Applied Physics 2016, 75, 24702 .

AMA Style

Jerzy Mizeraczyk, Mariusz Jasiński. Plasma processing methods for hydrogen production. The European Physical Journal Applied Physics. 2016; 75 (2):24702.

Chicago/Turabian Style

Jerzy Mizeraczyk; Mariusz Jasiński. 2016. "Plasma processing methods for hydrogen production." The European Physical Journal Applied Physics 75, no. 2: 24702.

Journal article
Published: 01 June 2016 in Nukleonika
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The hydrogen production by conversion of liquid compounds containing hydrogen was investigated experimentally. The waveguide-supplied metal cylinder-based microwave plasma source (MPS) operated at frequency of 915 MHz at atmospheric pressure was used. The decomposition of ethanol, isopropanol and kerosene was performed employing plasma dry reforming process. The liquid was introduced into the plasma in the form of vapour. The amount of vapour ranged from 0.4 to 2.4 kg/h. Carbon dioxide with the flow rate ranged from 1200 to 2700 NL/h was used as a working gas. The absorbed microwave power was up to 6 kW. The effect of absorbed microwave power, liquid composition, liquid flow rate and working gas fl ow rate was analysed. All these parameters have a clear influence on the hydrogen production efficiency, which was described with such parameters as the hydrogen production rate [NL(H2)/h] and the energy yield of hydrogen production [NL(H2)/kWh]. The best achieved experimental results showed that the hydrogen production rate was up to 1116 NL(H2)/h and the energy yield was 223 NL(H2) per kWh of absorbed microwave energy. The results were obtained in the case of isopropanol dry reforming. The presented catalyst-free microwave plasma method can be adapted for hydrogen production not only from ethanol, isopropanol and kerosene, but also from different other liquid compounds containing hydrogen, like gasoline, heavy oils and biofuels.

ACS Style

Dariusz Czylkowski; Bartosz Hrycak; Robert Miotk; Mariusz Jasiński; Jerzy Mizeraczyk; Mirosław Dors. Microwave plasma for hydrogen production from liquids. Nukleonika 2016, 61, 185 -190.

AMA Style

Dariusz Czylkowski, Bartosz Hrycak, Robert Miotk, Mariusz Jasiński, Jerzy Mizeraczyk, Mirosław Dors. Microwave plasma for hydrogen production from liquids. Nukleonika. 2016; 61 (2):185-190.

Chicago/Turabian Style

Dariusz Czylkowski; Bartosz Hrycak; Robert Miotk; Mariusz Jasiński; Jerzy Mizeraczyk; Mirosław Dors. 2016. "Microwave plasma for hydrogen production from liquids." Nukleonika 61, no. 2: 185-190.

Journal article
Published: 25 April 2016 in Plasma Sources Science and Technology
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Hydrogen is expected to be one of the most promising energy carriers. Due to the growing interest in hydrogen production technologies, in this paper we present the results of experimental investigations of thermal decomposition and dry reforming of two alcohols (ethanol and isopropanol) in the waveguide-supplied metal-cylinder-based nozzleless microwave (915 MHz) plasma source (MPS). The hydrogen production experiments were preceded by electrodynamics properties investigations of the used MPS and plasma spectroscopic diagnostics. All experimental tests were performed with the working gas (nitrogen or carbon dioxide) flow rate ranging from 1200 to 3900 normal litres per hour and an absorbed microwave power up to 5 kW. The alcohols were introduced into the plasma using an induction heating vaporizer. The ethanol thermal decomposition resulted in hydrogen selectivity up to 100%. The hydrogen production rate was up to 1150 NL(H2) h−1 and the energy yield was 267 NL(H2) kWh−1 of absorbed microwave energy. Due to intense soot production, the thermal decomposition process was not appropriate for isopropanol conversion. Considering the dry reforming process, using isopropanol was more efficient in hydrogen production than ethanol. The rate and energy yield of hydrogen production were up to 1116 NL(H2) h−1 and 223 NL(H2) kWh−1 of microwave energy used, respectively. However, the hydrogen selectivity was no greater than 37%. Selected results given by the experiment were compared with the results of numerical modeling.

ACS Style

Robert Miotk; Bartosz Hrycak; Dariusz Czylkowski; Miroslaw Dors; Mariusz Jasinski; Jerzy Mizeraczyk. Liquid fuel reforming using microwave plasma at atmospheric pressure. Plasma Sources Science and Technology 2016, 25, 35022 .

AMA Style

Robert Miotk, Bartosz Hrycak, Dariusz Czylkowski, Miroslaw Dors, Mariusz Jasinski, Jerzy Mizeraczyk. Liquid fuel reforming using microwave plasma at atmospheric pressure. Plasma Sources Science and Technology. 2016; 25 (3):35022.

Chicago/Turabian Style

Robert Miotk; Bartosz Hrycak; Dariusz Czylkowski; Miroslaw Dors; Mariusz Jasinski; Jerzy Mizeraczyk. 2016. "Liquid fuel reforming using microwave plasma at atmospheric pressure." Plasma Sources Science and Technology 25, no. 3: 35022.

Journal article
Published: 01 April 2016 in Physics of Plasmas
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In this paper, we present an analysis of the tuning characteristics of waveguide-supplied metal-cylinder-based nozzleless microwaveplasma source. This analysis has enabled to estimate the electron concentration ne and electron frequency collisions ν in the plasma generated in nitrogen and in a mixture of nitrogen and ethanol vapour. The parameters ne and ν are the basic quantities that characterize the plasma. The presented new plasma diagnostic method is particularly useful, when spectroscopic methods are useless. The presented plasma source is currently used in research of a hydrogen production from liquids.

ACS Style

Robert Miotk; Mariusz Jasiński; Jerzy Mizeraczyk. Analysis of the tuning characteristics of microwave plasma source. Physics of Plasmas 2016, 23, 043507 .

AMA Style

Robert Miotk, Mariusz Jasiński, Jerzy Mizeraczyk. Analysis of the tuning characteristics of microwave plasma source. Physics of Plasmas. 2016; 23 (4):043507.

Chicago/Turabian Style

Robert Miotk; Mariusz Jasiński; Jerzy Mizeraczyk. 2016. "Analysis of the tuning characteristics of microwave plasma source." Physics of Plasmas 23, no. 4: 043507.

Journal article
Published: 01 May 2014 in Physica Scripta
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Robert Miotk; Mariusz Jasiński; Jerzy Mizeraczyk. Optical emission spectroscopy of plasma generated by a waveguide-supplied microwave plasma source operated at 915 MHz. Physica Scripta 2014, T161, 1 .

AMA Style

Robert Miotk, Mariusz Jasiński, Jerzy Mizeraczyk. Optical emission spectroscopy of plasma generated by a waveguide-supplied microwave plasma source operated at 915 MHz. Physica Scripta. 2014; T161 ():1.

Chicago/Turabian Style

Robert Miotk; Mariusz Jasiński; Jerzy Mizeraczyk. 2014. "Optical emission spectroscopy of plasma generated by a waveguide-supplied microwave plasma source operated at 915 MHz." Physica Scripta T161, no. : 1.

Journal article
Published: 17 January 2014 in Open Chemistry
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Hydrogen seems to be one of the most promising alternative energy sources. It is a renewable fuel as it could be produced from e.g. waste or bio-ethanol. Furthermore hydrogen is compatible with fuel cells and is environmentally clean. In contrast to conventional methods of hydrogen production such as water electrolysis or coal gasification we propose a method based on atmospheric pressure microwave plasma. In this paper we present results of the experimental investigations of hydrogen production from ethanol in the atmospheric pressure plasma generated in waveguide-supplied cylindrical type nozzleless microwave (2.45 GHz) plasma source (MPS). Nitrogen was used as a working gas. All experimental tests were performed with the nitrogen flow rate Q ranged from 1500 to 3900 NL h

ACS Style

Bartosz Hrycak; Dariusz Czylkowski; Robert Miotk; Miroslaw Dors; Mariusz Jasinski; Jerzy Mizeraczyk. Hydrogen production from ethanol in nitrogen microwave plasma at atmospheric pressure. Open Chemistry 2014, 13, 1 .

AMA Style

Bartosz Hrycak, Dariusz Czylkowski, Robert Miotk, Miroslaw Dors, Mariusz Jasinski, Jerzy Mizeraczyk. Hydrogen production from ethanol in nitrogen microwave plasma at atmospheric pressure. Open Chemistry. 2014; 13 (1):1.

Chicago/Turabian Style

Bartosz Hrycak; Dariusz Czylkowski; Robert Miotk; Miroslaw Dors; Mariusz Jasinski; Jerzy Mizeraczyk. 2014. "Hydrogen production from ethanol in nitrogen microwave plasma at atmospheric pressure." Open Chemistry 13, no. 1: 1.

Journal article
Published: 24 November 2013 in Plasma Chemistry and Plasma Processing
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Results of chemical kinetics modeling in methane subjected to the microwave plasma at atmospheric pressure are presented in this paper. The reaction mechanism is based on the methane oxidation model without reactions involving nitrogen and oxygen. For the numerical calculations 0D and 1D models were created. 0D model uses Calorimetric Bomb Reactor whereas 1D model is constructed either as Plug Flow Reactor or as a chain of Plug Flow Reactor and Calorimetric Bomb Reactor. Both models explain experimental results and show the most important reactions responsible for the methane conversion and production of H, CH, CH and CH detected in the experiment. Main conclusion is that the chemical reactions in our experiment proceed by a thermal process and the products can be defined by considering thermodynamic equilibrium. Temperature characterizing the methane pyrolysis is 1,500–2,000 K, but plasma temperature is in the range of 4,000–5,700 K, which means that methane pyrolysis process is occurring outside the plasma region in the swirl gas flowing around the plasma.

ACS Style

Mirosław Dors; Helena Nowakowska; Mariusz Jasiński; Jerzy Mizeraczyk. Chemical Kinetics of Methane Pyrolysis in Microwave Plasma at Atmospheric Pressure. Plasma Chemistry and Plasma Processing 2013, 34, 313 -326.

AMA Style

Mirosław Dors, Helena Nowakowska, Mariusz Jasiński, Jerzy Mizeraczyk. Chemical Kinetics of Methane Pyrolysis in Microwave Plasma at Atmospheric Pressure. Plasma Chemistry and Plasma Processing. 2013; 34 (2):313-326.

Chicago/Turabian Style

Mirosław Dors; Helena Nowakowska; Mariusz Jasiński; Jerzy Mizeraczyk. 2013. "Chemical Kinetics of Methane Pyrolysis in Microwave Plasma at Atmospheric Pressure." Plasma Chemistry and Plasma Processing 34, no. 2: 313-326.