National Research And Development Institute For Cryogenics And Isotopic Technologies Icsi Rm Valcea

Râmnicu Vâlcea, Romania

National Research And Development Institute For Cryogenics And Isotopic Technologies Icsi Rm Valcea

Râmnicu Vâlcea, Romania
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Marinoiu A.,National Research And Development Institute For Cryogenics And Isotopic Technologies Icsi Rm Valcea | Raceanu M.,National Research And Development Institute For Cryogenics And Isotopic Technologies Icsi Rm Valcea | Carcadea E.,National Research And Development Institute For Cryogenics And Isotopic Technologies Icsi Rm Valcea | Varlam M.,National Research And Development Institute For Cryogenics And Isotopic Technologies Icsi Rm Valcea | And 2 more authors.
Medziagotyra | Year: 2017

Aiming a commercial development of proton exchange membrane fuel cells(PEMFC), a low cost, sustainable and high performance electrocatalyst for oxygen reduction reaction (ORR) with capability to replace/reduce rare metals, are high desirable. In this paper, we present a class of doped graphene, namely iodinated graphenewith highly ORR electrochemical performances, synthesized by using theelectrophilic substitution method. The prepared samples werecharacterized by different techniques, including Scanning Electron Microscopy SEM, X-ray photoelectron spectroscopy XPS, Raman spectroscopy, surface area measurementby BET method, that revealed the structure and morphology. Themost highlyiodinated graphene was tested in a single cell by measuring thecyclic voltammetry.The electrochemical performances were evaluated and compared with a typical PEMFC configuration, when a single cathodic peak at 0.2V with a current density of –3.67mA cm-2 for the Pt/C electrode was obtained. The best electrochemical performances in terms of electrochemical active area, was obtained for a new concept of cathode composed from Pt/C –iodine doped graphene, when a well-defined peak centred at 0.23V with a current density of approx. –9.1mA cm-2 was obtained, indicating a high catalytic activity for ORR. © 2017, Kauno Technologijos Universitetas. All rights reserved.


Cristian P.,Romanian National Institute for Research and Development in Chemistry and Petrochemistry | Violeta P.,Romanian National Institute for Research and Development in Chemistry and Petrochemistry | Anita-Laura R.,Romanian National Institute for Research and Development in Chemistry and Petrochemistry | Raluca I.,Romanian National Institute for Research and Development in Chemistry and Petrochemistry | And 6 more authors.
Journal of Water Process Engineering | Year: 2015

In this paper, the performances and efficiency of some novel polymer membranes doped with fumed silica powder were investigated. The membranes obtained using a laboratory electrodialysis system was involved in zinc ions removal from model wastewater system. The experiments were carried out using three concentrations of zinc ions: 500, 1000 and 1500ppm, respectively; an applied voltage of 5, 10 and 20V; flow rate: 13mL/min; time for each experiment: 2h. The removal ratio (R) and mass flow (J) of zinc ions and also water content (% wt.) were determined. Membranes were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM) and electrochemical impedance spectroscopy (EIS). The results indicated that the membranes doped with fumed silica powder significantly influenced the zinc ions removal process from wastewater, this fact being proved by a strong enhancement of the removal ratio from 27.56±0.38% to 96.30±0.11% and by the increase of the mass flow from 8.79±0.12g/m2h to 92.33±0.10g/m2h. The FTIR-ATR spectra showed the existence of a peak located at ~1079cm-1 indicating the presence of silica. The TGA results indicated an improvement of the fouling resistance of the membranes doped with incorporated fumed silica powder. Other properties are also enhanced by the addition of fumed silica, namely the membrane hydrophilicity and the ionic conductivity. The highest ionic conductivity was 0.8937mS/cm at 20V. © 2015 Elsevier Ltd.


Caprarescu S.,Polytechnic University of Bucharest | Radu A.-L.,Romanian National Institute for Research and Development in Chemistry and Petrochemistry | Purcar V.,Romanian National Institute for Research and Development in Chemistry and Petrochemistry | Ianchis R.,Romanian National Institute for Research and Development in Chemistry and Petrochemistry | And 7 more authors.
Applied Surface Science | Year: 2015

The present paper was aimed at studying the possibility of zinc (Zn) removal from the wastewater discharged from zinc electroplating processes. In order to save industrial and environmental resources, the concentrated solution could be reused after electrodialysis process. A mini-electrodialysis system with three cylindrical compartments and different membranes containing various resins (Purolite A500 and Hypersol-Macronet MN500) was employed, which can be further applied for the treatment of synthetic effluent which contained zinc ions. The electrodialysis system was operated at constant voltage using different concentrations of synthetic solutions of zinc ions, without and with electrolyte recirculation for 1.5 h. The pH and conductivity of solutions were measured before and after the electrodialysis process occurs. Also the removal ratio (Rr) and mass flow (J) of zinc ions, energy consumption (EC) and current efficiency (CE) were determined. It was found that electrodialysis treatment generated a very low conductivity solution, enabling its reuse as rinse water. According to the obtained results when using a membrane pair with higher ion exchange capacity (IEC) the removal ratio is improved (over 80%). The physico-chemical, structural and mechanical properties of prepared membranes were registered, before and after electrodialysis process takes place, by means of complementary analytical techniques, namely, ion-exchange capacity, water content and thickness measurements. Furthermore analysis were also carried out by Fourier transform infrared spectroscopy (FT-IR), environmental scanning electron microscopy (ESEM), thermal gravimetric analysis (TGA) and electrochemical impedance spectroscopy (EIS). © 2015 Elsevier B.V. All rights reserved.


Grant
Agency: European Commission | Branch: FP7 | Program: JTI-CSA-FCH | Phase: SP1-JTI-FCH.2011.5.1 | Award Amount: 1.77M | Year: 2012

Scope and background of project In the 4th call of the European FCH JU (AIP 2011) a project has been called to map out the relevance of hydrogen underground storage. The focus being on seasonal energy storage at large scale, the potential, application profile, impact of and schedule to implement this concept may differ across Europe. In recent studies a clear profile for various large-scale storage concepts / technologies has been elaborated for Germany, and here specifically the northern regions, with involvement of the public sector and industry. Utilizing this knowledge, also actors in other regions have started to assess the individual geographic hydrogen underground storage potential in their respective region such as in Spain and the UK and show interest to commercially deploy this concept. Expected results The idea behind the project is to establish a European initiative supporting the deployment of hydrogen energy storage in underground storage caverns at large scale, benchmark their storage potential in relation to the energy market and competing storage technologies, and to identify and assess application areas, stakeholders, safety, regulatory framework and public acceptance. The general concept of the project foresees case studies for five representative European regions benchmarking against the results from ongoing German industry projects. Each of these case studies will consider the competitiveness of hydrogen storage against other large scale energy storage concepts, the geologic potential for hydrogen storage in the region, and how to embed the hydrogen energy storage in the energy market. The perspective of the cases studies is potential business cases for each region and the development of an Implementation Plan at European scale.


Grant
Agency: European Commission | Branch: FP7 | Program: CSA-CA | Phase: INFRA-2007-3.0-05 | Award Amount: 2.12M | Year: 2007

The term Research Infrastructures (RIs) refers to facilities and resources that provide to the scientific community essential services needed for the performance of leading edge research in both an academic and/or industrial environment. Research Infrastructures should be open to researchers, to the scientific community and to the Industry and cover the whole range of scientific and technological fields. The Research Infrastructures are of high importance in order to strengthen the knowledge base of Scientifc Communities and the technological know-how of Industrial sector across Europe. The overall objective of the proposed project is: To support the efficient implementation of the Research Infrastructures Programme and to promote the benefities offered by the RIs in order to enhance the Research Excellence, the competitiveness and the growth of Europe. Within this framework the project aims to improve the effectiveness of the Research Infrastructures (RIs) NCPs network through the upgrade of the level of the transnational cooperation which will result in more consistent services provided to the customers/clients across Europe. Coordination activities and synergies with other EU Networks will promote a coherent approach towards the Research Infrastructures and their utilization for the benefits of the European Scientific Community and Industry. The NCPs within each particular country represent different administrative and organisational schemes and patterns. The lack of coordination activities between NCPs frequently leads to obstacles both for the NCPs and the Researchers and requires more efforts by the European Commission for the effective implementation of the Programme itself. The project will focus on the establishment of a unified approach to RIs NCPs services across EU, will support the trasnational collaboration, will raise awareness at European level and will promote RIs as a base for a coherent development of the enlarged Union.


Grant
Agency: European Commission | Branch: FP7 | Program: CSA | Phase: INFRA-2011-3.5. | Award Amount: 1.20M | Year: 2011

The main objective of EuroRIs-Net\ is to provide value-added services, through the Network of NCPs for Research Infrastructures. These services will facilitate transnational cooperation of NCPs, promoting the effective implementation of the RI programme, highlighting opportunities offered by Research Infrastructures - at the European and international level - and their impact on e-science. The Network will develop observatory functions for EC and national Research Infrastructures policies, programmes and initiatives, supported by an efficient dialogue scheme for RI NCPs with the RI ecosystem and a sustainable and comprehensive RI Knowledge Repository. Specifically:\tProvision of high level services to our clients (RI scientific communities, industry and public stakeholders) and promotion of best RI NCP practices will be supported through training, peering and helpdesk activities for all RI NCPs, whereas development of systematic partnering activities will increase collaboration among RI stakeholders \tIncreased visibility of the RI programme to all thematic areas of FP7 will empower and support bottom-up approaches for scientific and user communities in the RI programme, facilitated through cooperation with other NCP networks, with direct benefit on focused scientific communities. Moreover, the network will implement targeted dissemination activities to improve visibility of the projects services and the RI programme, contributing to the broader use of Research Infrastructures \tAn interactive platform for communication among the Network, EC, RI policy bodies and RI stakeholders will constructively support policy design, through a dialogue - among RI ecosystem actors - which will facilitate diffusion of RI policy bodies recommendations to the relevant public authorities and, vice-versa, will permit collection and analysis of integrated data on countries participation in Research Infrastructures, to support, wherever possible, their integration within the ERA


Geana E.I.,National Research And Development Institute For Cryogenics And Isotopic Technologies Icsi Rm Valcea | Geana E.I.,University of Bucharest | Popescu R.,National Research And Development Institute For Cryogenics And Isotopic Technologies Icsi Rm Valcea | Costinel D.,National Research And Development Institute For Cryogenics And Isotopic Technologies Icsi Rm Valcea | And 4 more authors.
Food Control | Year: 2016

The assessment of wine traceability and authenticity is a major concern that has gained a lot of interest internationally since the wine has always been subjected to various fraudulent practices. Practiced since ancient times, wine fraud has become more sophisticated in the present day, taking many forms. Consumers, regulatory bodies and manufacturers are all interested to have reliable analytical tools and information to allow the authentication and detection of wine adulteration or incorrect labelling. This research study evaluates and proposes a possible strategy for the detection of adulterated sweet or medium sweet red table wines using appropriate chemical parameters which can reveal prohibited practices in the winemaking process. The work is performed on 29 table wine samples, bought from the market, packed in PET bottles. Exogenous addition of sugar and water in the counterfeited table red wines was detected by the measurement of stable isotopes content (δ13C and δ18O) known as origin markers and supplementary confirmed by other classical parameters, as the alcoholic strength of the wines (% vol.) and the presence of 5-(hydroxymethyl)-2-furaldehyde (HMF) and of synthetic sweeteners or synthetic red dyes used to correct deficiencies of taste and colour. Additionally, the nature and profile of anthocyanins, as indicator of the red colour of wine, was investigated in the table wines and then compared with that of authentic wines obtained by microvinification of Vitis vinifera, in order to determine their authenticity. © 2015 Elsevier Ltd.

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