Time filter

Source Type

Petrov K.,Bulgarian Academy of Science | Baykara S.Z.,Yildiz Technical University | Ebrasu D.,National Institute for Cryogenics and Isotopic Technologies ICIT | Gulin M.,Ukrainian Academy of Sciences | Veziroglu A.,International Association for Hydrogen Energy
International Journal of Hydrogen Energy | Year: 2011

In the deeper parts of the Black Sea basin, water is anoxic. Hydrogen sulfide (H2S) occurs naturally, and its concentration is nearly constant, around 9.5 mg/L at 1500 m depth. Its high solubility, and the existing chemical environment facilitate its accumulation and containment in the seawater, and its extraction poses a challenge. Possibility of hydrogen and sulfur production from H2S contained in the waters of Black Sea is investigated conceptually. A multistage process is considered which involves extraction of seawater, adsorption of H2S, electrochemical production of hydrogen and polysulfides; fresh water production by desalination of seawater and further hydrogen production from the resulting salty solution through chlorine-alkaline electrolysis. Some consideration is included regarding the economic and environmental aspects of the process. © 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.


Faurescu I.,National Institute for Cryogenics and Isotopic Technologies ICIT | Varlam C.,National Institute for Cryogenics and Isotopic Technologies ICIT | Faurescu D.,National Institute for Cryogenics and Isotopic Technologies ICIT | Vagner I.,National Institute for Cryogenics and Isotopic Technologies ICIT | And 2 more authors.
Journal of Radioanalytical and Nuclear Chemistry | Year: 2015

This paper describe a method that correlate underground water dating using radiocarbon and other environmental isotopes in order to estimate recharge conditions of an aquifer located in Romania. Radiocarbon ages were corrected by six correction models. Obtained data conducted to a mean transit velocity of studied aquifer of 0.55 m/year, value which is specific for this type of aquifer. Although radiocarbon measurement method proposed in this paper is a classical one, optimizations to the preparation technique allow reduction of time and financial costs and can be successfully applied to a large number of samples, common in hydrological studies. © 2015, Akadémiai Kiadó, Budapest, Hungary.


Vagner I.,National Institute for Cryogenics and Isotopic Technologies ICIT | Varlam C.,National Institute for Cryogenics and Isotopic Technologies ICIT | Faurescu I.,National Institute for Cryogenics and Isotopic Technologies ICIT | Faurescu D.,National Institute for Cryogenics and Isotopic Technologies ICIT
Journal of Radioanalytical and Nuclear Chemistry | Year: 2015

In order to evaluate the impact of tritium on wild vegetation around ICIT we have monitored the tritium concentrations in precipitation, air, soil, grass and green wheat from a specific area near the tritium removal facility during vegetation periods in 2012–2013. The tissue free water tritium concentration showed the influence of tritium level in precipitation, with higher values during the summer (around 2 Bq l−1) and lower values during the autumn (around 1.3 Bq l−1). The same behavior was observed for the total organically bound tritium level. © 2014, Akadémiai Kiadó, Budapest, Hungary.

Loading National Institute for Cryogenics and Isotopic Technologies ICIT collaborators
Loading National Institute for Cryogenics and Isotopic Technologies ICIT collaborators