BrainMap

Mr. Dragos-George Astanei

Ph.D

Conferentiar universitar - UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI

Other affiliations

- GREMI Laboratory - Site of Bourges / Orleans University - CNRS (France)

Researcher | Teaching staff | Scientific reviewer | Entrepreneur | Manager

Web of Science ResearcherID: A-4511-2019

Curriculum Vitae (02/11/2024)

Expertise & keywords

Double-sided bio-treatment of polymeric foil for food packaging using coupled DBD-Corona non-thermal plasma Call name: P 3 - SP 3.2 - Proiecte ERA.NET
ERANET-MANUNET-PlasmaPack 2020 - 2022

Role in this project: Project coordinator

Coordinating institution: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI

Project partners: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO); PROSUPPORT CONSULTING SRL (RO); Istanbul Technical University (TR); Poşetsan Ambalaj San. Ve Tic A.Ş. (TR)

Affiliation: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO)

Project website: http://www.plasmapack.ieeia.tuiasi.ro/

Abstract:

The advantages of polymeric food packaging are widely recognized but the improper sterilization and/or disinfection of inner surface of polymer in contact with food may represent a major risk in food safety. On the other hand, the next generation of food packaging should be suitable for incorporating e-labels and smart labels in order to improve the traceability of the food products. The most important issue is related to both inner and outer surfaces of polymeric foil treatment, playing an important role in packaging and should satisfy the expectations in respect to food safety and labelling quality. In this regard, non-thermal plasma (NTP) emerged as technology capable of increasing the surface energy of polymers, enhancing adhesion and printability, and has been successfully applied for surface decontamination of both food products and food packaging. Accordingly, PlasmaPack aims to develop a technology based on NTP plasma (coupled DBD-Corona discharges) for double-sided treatment of polymeric foil used in food packaging. This will lead to proper disinfection (sterilization) of inner surface and facilitates smart labels printing on outer surface.

Experimental model for demonstrating the feasibility of increasing the therapeutic potential of wheat sprouts by treating them with non-thermal plasma activated water (PAW) Call name: P 2 - SP 2.1 - Proiect experimental - demonstrativ
PN-III-P2-2.1-PED-2019-0556 2020 - 2022

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI

Project partners: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO); UNIVERSITATEA DE MEDICINA SI FARMACIE "GRIGORE T. POPA" DIN IAŞI (RO); UNIVERSITATEA DE STIINTE AGRICOLE SI MEDICINA VETERINARA "ION IONESCU DE LA BRAD" (RO); CODALB-M.V. SRL (RO)

Affiliation: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO)

Project website: http://www.phytopaw.ieeia.tuiasi.ro/

Abstract:

The scope of this project is to develop an experimental device meant to demonstrate the feasibility of increasing the therapeutic potential of wheat sprouts (Triticum aestivum) by treating them with non-thermal activated water (PAW). The effect of natural products in the prophylaxis or even in the treatment of diseases is well known, since, in most cases, they have no side effects on the human body. Excellent results have been obtained following the introduction into the diet of natural products, even in cases considered incurable. Wheat sprouts are a rich source of nutrients (proteins, lipids, fibers, vitamins) and bioactive phytochemicals (BFT) (polyphenols, gamma-aminobutyric acid, etc.). The project propose the utilization of a non-thermal plasma-based technology (NTP) to produce plasma-activated water (PAW) aiming to increase the bioactive phytochemicals in wheat sprouts with benefits for human health and well-being. The technological innovation currently has been tested, as a small single laboratory unit, which can produce low concentrations of NO3- and H2O2 in water treated by non-thermal plasma. In order to bring this innovation to market, the key technical challenges of the proposal are referring to: the reactor/power supply scale-up to a laboratory complex equipment for PAW production, power supply optimization, long time tests of the complete system and correlation between the electrical parameters of the NTP with BFT produced by wheat sprouts.

Atmospheric pressure nonthermal plasma reactor for preTREATment of pOlymeric substrates used in printable FLEXible electronics manufacturing Call name: P 3 - SP 3.2 - Proiecte ERA.NET
ERANET-MANUNET-III-Treatoflex 2020 - 2022

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI

Project partners: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO); PROSUPPORT CONSULTING SRL (RO); FUNDACION I+D AUTOMOCION Y MECATRONICA (ES); MATEPRINCS (ES)

Affiliation: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO)

Project website: http://www.treatoflex.ieeia.tuiasi.ro

Abstract:

Flexible electronics also known as organic electronics is defining a category of electronic devices developed on a bendable substrate material (mainly polymers, but also paper) with the aim of addressing the current societal needs in terms of applications (e.g. increasing the energy production from renewable sources, improving energy efficiency, providing new diagnosis tolls for health system), targets which can be reached only by diminishing the production cost of the electronic and electrical devices. The herein proposal is aiming to foster the development of flexible printed electronics processes by proposing a solution to the disadvantages of the current manufacturing technology. Thus, the Consortium is proposing utilization of a plasma based technology for pretreating the surface of the polymeric substrate at atmospheric pressure and room temperature, in the absence of additional gases. The new technology which is to demonstrate high potential of being integrated at the level of screen printing and inkjet printing processes may impact significantly the economic situation of both SMEs and ensure their improved position within International supply chain.

Evaluation of the activated water produced by different non-thermal plasma reactors Call name: P 3 - SP 3.1 - Proiecte de mobilități, România-Franța (bilaterale)
PN-III-P3-3.1-PM-RO-FR-2019-0213 2019 - 2021

Role in this project: Project coordinator

Coordinating institution: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI

Project partners: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO); GREMI-Site de Bourges, UMR7344, CNRS/Université d'Orléans (FR)

Affiliation: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO)

Project website: http://www.paw-ev.tuiasi.ro/

Abstract:

The main objective of the project is to obtain a complete evaluation of reactive species concentrations (especially NO3 and H2O2) into non-thermal plasma (NTP) activated water, PAW, when using different NTP reactors and different primary parameters (water flowrate, gas flowrate, electrical parameters). The obtained results will allow realizing a complete image in choosing the optimum conditions for producing PAW (reactor and primary operating parameters) for irrigating plants in different vegetation stages.

High Efficiency Double Spark-Plug Based Ignition System Call name:
PN-III-9PFE COMPETE 2019 - 2020

Role in this project: Partner team leader

Coordinating institution: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI

Project partners: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI ()

Affiliation: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI ()

Project website: http://www.compete.tuiasi.ro

Abstract:

The development of “clean” and efficient internal combustion engines (ICE) requires a fast and complete combustion of the air/fuel mixture under high pressure, which cannot be always assured by a conventional ignition system. The reduction of the ICE’s pollutant emissions (HC, CO, NOx) can be obtained by operating with lean mixtures (low hydrocarbons ratio in mixture with air), which also implies a lower fuel consumption.

The scope of this study is to design, develop, test and validate a new type of plasma ignition system based on a double spark plug for internal combustion engines (ICE), which can adapt to all current types of internal combustion engines without changing their structure. In particular, the increase of the plasma volume and especially the enlargement of the contact area between the plasma and the air / fuel mixture, as compared to the spark generated by a conventional spark plug, to promote the rapidity and the quality of the combustion. In addition to the benefits delivered by the spark plug configuration, the combustion process will also be improved due to the higher discharge current rise rate induced by the power supply that will be designed.

Increasing the Agricultural Production in Greenhouses using Non- Thermal Plasma Activated Water Technology for Irrigation Call name: P 4 - Proiecte de Cercetare Exploratorie
PN-III-P4-ID-PCE-2016-0277 2017 - 2019

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI

Project partners: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO)

Affiliation: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO)

Project website: http://www.awag.ieeia.tuiasi.ro/

Abstract:

The thematic of the project refers to the sustainable intensification of crop plants and systems of agriculture, by developing integrated, systems-based approaches to biomass increasing, organic pesticides and fertilizers, intensive land exploitation of greenhouses by using interdisciplinary and innovative technologies.

This project proposal aims implement some new methods of ecological and non-stressful treatment of plants for eliminating or reducing to a minimum of the quantity of chemical substances (pesticides) used for the protection of plants against the pathogen agents or for stimulating growth compounds (fertilizer).

The non-thermal plasma activated water (PAW) has a notable effect on the plants growing and pests elimination (bio-disinfection). PAW reduces the period of plants growing and increases the biomass and provides plants leaves disinfection and effective as bio fertilizer in the same time.

In addition, in order to obtain an intensive exploitation of greenhouses land use by increasing the biomass, the application of PAW treatments in the vegetation periods with high demand from the plant may have an increasing effect of biological resistance to the attacks of diseases (fungal and bacterial) manifested by crops grown in protected areas.

To emphasize the changes that occur due to PAW treatment on plant development stages specific horticultural tests and biochemical analysis in the leaves and fructification will be performed supplemented by numerous biometric phenological and production determinations.

It is expected to obtain stimulation of seeds germination, reducing the interval between sowing and growth Herbaceous energy annual crops species, a good development after planting, stimulating to increase foliar surface, increasing the number of flowers / plant, developing an immune system and finally the increasing economic competitiveness of plants yield.

Demand-Side Management of residential prosumers with photovoltaic systems Call name: P 2 - SP 2.1 - Cecuri de inovare
PN-III-P2-2.1-CI-2017-0823 2017 - 2018

Role in this project: Key expert

Coordinating institution: CONSULT FINANCE SRL

Project partners: CONSULT FINANCE SRL (RO); UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO)

Affiliation: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO)

Project website: http://www.simas.tuiasi.ro

Abstract:

The main objective of the project is to design, develop and experimentally test an intelligent system for demand side management of residential prosumers with photovoltaic systems, in order to increase the level of self-consumption from owner sources.

The proposed experimental model for the demand side management system aims to allow a partially or totally relocation in time of the residential loads, the main objective being maximize the self-consumption coefficient, minimize the amount of energy exchanged with the electric grid, and also ensure the suitable availability indices for residential loads supplied from photovoltaic sources.

In order to fulfill the project objective, the main activities will be planned in accordance with following directions: (1) to development a new algorithm which, based on power/energy flows analyzes and also on the feed-in-priority restriction, to establish a schedule of loads operations, in order to adjust the load profile to the generated photovoltaic power profile; (2) to design and experimentally develop a hardware structure around an intelligent module, which will manage the loads operations, the manage mode being ensured by transmitting the on/off states of loads through a wireless structure; an Android application will be created in order to ensure the interface of DSM systems with the operators; (3) after the development of DSM system, practical testing will be carried out, in the first stage in the LACARP laboratory and, in the second stage, in the utility grid of the beneficiary, by carrying out different scenarios for which the self-consumption characteristics will be monitored.

The study of high pressure electrical discharges used for a qualitative combustion Call name:
Proiect Capacitati Modul III - Cooperari bilaterale (Nr.302/2009 2009 - 2010

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI

Project partners: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO); GREMI Laboratory - Site of Bourges/CNRS, Orleans University (RO)

Affiliation: UNIVERSITATEA TEHNICĂ "GHEORGHE ASACHI" IAŞI (RO)

Project website: http://iota.ee.tuiasi.ro/~bhnatiuc/index.html

Abstract:

The classical ignition for internal combustion motors uses switch and an ignition coil that multiply the car battery voltage 12-13 v up to few tenths of thousands volts in order to initiate the spark between the spark-plug electrodes. The timing of the ignition spark must be correlated and synchronized with the piston position into the motor cylinder. The development of an electronic ignition system for internal combustion motors, clean and efficient, requires a fast and complete burn of the poor combustion mixture at high pressure. The ignition sparks provided by the classical spark plug do not always assure a fast and complete combustion of the mixture hydrocarbon-air.

The previous studies have demonstrated that a reducing of pollutant emissions of the motors (HC, CO, NOx) can be obtained by using a low concentration of hydrocarbons in the mixture with air, which implies a lower consumption of fuel.

In order to improve the quality of the combustion a lot of technical solutions have been found to be effective, among which on can mention: ignition in a burned gases, Pulse Jet Combustor, multi-electrode spark plug, pulsed Laser ignition, Corona and Glidarc discharges, etc.

Another solution have been proposed by Nakamura which uses more ignition points for a cylinder equipped with several classical spark plugs. He noticed that the combustion cycle evolves faster, the compression ratio of the motor increase and the poor mixture of hydrocarbons leads to a decreasing of some pollutants and in the same time a higher efficiency of the combustion.

Taking into account the principles mention above three ignition systems have been proposed and tested in a high pressure (10 bar) air reactor:

- the double spark system that used two simultaneous sparks generated by pulsed a high voltage power supply, which have been tested and analyzed from electrical and optical point of view;

- the DBD volumetric discharge system that use the propriety of this type of discharge to generate more plasma channels, therefore a higher homogeneity of the plasma;

- the gliding arc discharge system, which permits a simplification of the ignition system and a reducing of the electrical insulation level.

The experimental tests and analyze have demonstrated that the ignition devices proposed above are applicable in real conditions of functioning of a one cylinder motor. The research proposed refers to the testing, validation and implementation of an ignition device for an internal combustion motor in order to increase the rapidity and the quality of the fuel combustion, therefore the reducing of pollutant emissions. The method consists in the generation of an electrical discharge between the spark plug electrodes able to assure a larger and more homogenous volume of the plasma in the cylinder. Among the principles mention above the first one has been proved to be more effective and easier to set up from a technical point of view. The two ignition sparks are obtained by interposing between the electrodes of a classical spark plug of an auxiliary electrode. The testing set up of two-spark plug required a pulsed power supply that use an ignition coil driven by a micro system with AT89S52. The power supply used for the experiments permitted the shift control of the pulses and therefore the possibility to control the ignition timing of the combustion process. The experiments done in a high pressure chamber with air showed that the two sparks breaks down at a time interval of hundreds of nanoseconds and their total length have been about 2 mm.

The ignition system was tested on a mono-cylinder 4 times motor aiming the combustion and mechanical parameters analysis. Different types of pulses was tested in order to adapt the ignition timing to the mechanical parameters of the motor. The combustion was analyzed quantitative and qualitative as well.

Function on the results to be obtained the research team is looking forward to apply for a patent. On can mention that the ignition system proposed can be applicable in other domains than automotive. The bilateral project aim to conclude and develop a previous research, with the possibility of a technological transfer and involved not only senior researcher but also young graduated students.

FILE DESCRIPTION	DOCUMENT
List of research grants as project coordinator or partner team leader	Download (45.56 kb) 22/03/2023
Significant R&D projects for enterprises, as project manager
R&D activities in enterprises
Peer-review activity for international programs/projects