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In the paper, the comparative analysis of results of the research concerning energy consumption of separation process and influence of operational parameters is presented. Results are acquired basing on experimental and computational research. Scope of the analysis is stated within cascade system with lack of gas recirculation and membrane system with gas recirculation. Investigation is performed using UBE NM-BO2 A capillary polymer membrane. In the paper, operational characteristics of compared systems, obtained both on the basis of experiment and computational investigation, are presented. Results were obtained basing on varying feed pressure of the membrane module, as well as varying feed flows. Furthermore, comparison of the two systems concerning influence of their selected operational parameters and possibility of application in oxy-combustion systems is performed. Rationality of discussed systems application to industrial and power oxycombustion systems is emphasized. Investigated systems are characterized by number of advantages and certain limitations caused by mechanical properties. The paper states a part of research on possibility of use of discussed membrane technology in industrial systems and power oxy-combustion units. [ABSTRACT FROM AUTHOR]

The main objectives of each of cities from Romania are sustainable development, energy efficiency, use of renewable energy and ensuring a clean and healthy environment for citizens in a modern city, attractive, prosperous and a high standard of living. The climate changes, increasingly present every day in the realities of city, mainly caused by human factor, obliges us to a new approach and orientation responsible for the future of our decisions in order to rational and efficient use of resources, especially in order to combate, to reduce and adapt to climate change. The way we intervene to reduce emissions of greenhouse gases, to mitigate and adapt to climate change defines us, placing us among European citizens informed, responsible and active. Renewable energy and biomass energy, a type of renewable energy, are one of the issues that have been overemphasized since the 1990s. The fact that the countries of the world turned to renewable energy sources from fossil fuels and diversified their energy sources, the increasing importance of renewable energies in the energy security context, the lack of stability in energy prices, the fact that the countries adopted growth strategies based on local dynamics, the source of which they had in their lands, reducing transportation costs, alternatives to generate electricity were among the factors that brought this issue to the agenda of the world and made the scientists conduct studies on the issue. Biomass energy that is one of the renewable energy sources is an important energy source particularly for developing countries, and the production and use of it are increasing every day. Considering the geographic features of the region, the use of biomass for bio-economy development, comes naturally. In order to create a business model for the use and integration of biomass supply- chain, this study will focus on providing an overview on the current state of biomass availability and usage in West Region of Romania, as well as providing brief presentation of roadblocks for further development of biomass supply chains. Also, the focus will be on developing transnational interactions that could be a solution to biomass development in the region. In that sense, the target of the next chapters is to assess the energetic potential of existing biomass in Western Region, and the necessary features of the supply chain, needed in order to develop a sustainable business in biomass field. In this paper it will be estimated potential production of biogas from residues and waste for the western region of the country. To accomplish this is necessary to identify the types of wastes and wastes that can be used. Identification will be made by name, quantity, the theoretical potential of biogas and waste to flow through the availability of energy use. Consideration should also be given to the methods of using these wastes and wastes time. [ABSTRACT FROM AUTHOR]

Today the renewable energy technologies are attracting research attention more than ever as a result of the environmentally destructive influences of the fossil fuels. Because there are numerous fossil fuel reserves in the north of the Black Sea, the trend of renewable energies in this region is less than in other countries. The use of fossil fuels in this region causes an increase in both regional and global aspects of environmental pollution. The formation of the H2S in Black Sea, which is a closed sea, affects the natural life of its inhabitants and environmental flora in this region. If the H2S can be separated to produce pure hydrogen using various methods, H2S pollution in this sea will be overcome and pure hydrogen will be used in the fuel cells for alternative energy production. The amount of H2S ensures an adequate potential of energy production in multiple countries around the Black Sea. Moreover, a large amount of the world's boron reserves are in Turkey. Boron is an ideal material for hydrogen storage. Black Sea coastal countries, especially Turkey, must incline using efficient and renewable energy. Country strategies shall be issued aiming this tendency. For the realization of a more conscious use of energy in the future, education should emphasize on energy efficiency and environmental protection. Especially to create the necessary awareness by preschool and primary school students, the topic should be included in the curricula as well as in the social responsibility projects. Accordingly, this paper aims to provide an alternative approach to the energy usage of the Black Sea coastal countries, especially Turkey. In addition, awareness of energy efficiency and environmental protection in education system are described. [ABSTRACT FROM AUTHOR]