RON 72 118 Volatility. Volatility is a fuel's tendency to vaporize. Two physical properties are used to characterize fuel volatility: vapor pressure and distillation profile. A more volatile fuel has a higher vapor pressure and lower initial distillation temperatures. Volatility is important because the fuel must vaporize before it can burn. However, too high volatility can result in evaporative losses or fuel system vapor lock. Volatility is one of the major differences between kerosene-type and wide-cut jet fuel. Kerosene-type jet fuel is relatively non-volatile. Widecut jet fuel is better suited for cold weather applications because it has a lower viscosity and freezing point than kerosene-type jet fuel. In such applications, evaporative losses are less of a concern. Non-corrosiveness. Jet fuel contacts a variety of materials during distribution and use. It is essential that the fuel not corrode any of these materials, especially those in aircraft fuel systems. Typically, fuel tanks are aluminum, but fuel systems also contain steel and other metals. Fuel tanks may also have sealants or coatings, and elastomers are used in other sections of the fuel system. Engine and airframe manufacturers conduct extensive fuel compatibility testing before approving a material for fuel system use. Corrosive compounds potentially present in jet fuel include organic acids and mercaptans. The specifications limit these classes of compounds. By-products of microbial growth also can be corrosive. Contamination from trace amounts of sodium, potassium, and other alkali metals in the fuel can cause corrosion in the turbine section of the engine. Cleanness. Fuel cleanliness means the absence of solid particulates and free water. Particulatesrust, dirt, etc.-can plug fuel filters and increase fuel pump wear. Water, in addition to not burning in an engine, will freeze at the low temperatures encountered in high altitude flights. The resulting ice may plug fuel filters and otherwise impede fuel flow. Water in the fuel also may facilitate the corrosion of some metals and the growth of microorganisms. Safety properties. Jet fuel can be hazardous if not handled properly. First, and foremost, it ignites easily and it burns rapidly. Second, exposure to jet fuel liquid or vapor should be limited. Anyone planning to handle jet fuel should obtain and read the Material Safety Data Sheet (MSDS) issued by the supplier.
The problem of landfills is one of the most important and urgent among the problems of environmental pollution. This issue needs an immediate solution not only in Ukraine but all over the world. Every human home accumulates a huge amount of unnecessary materials and products, from old newspapers and magazines, empty cans, bottles, food waste, wrappers and packaging, to broken dishes, worn clothes and broken appliances or office equipment. Every day we are forced to deal with waste: at home, in the environment). Everywhere we are surrounded by papers, plastic wrappers, glass, cellophane, etc. Today, taking into account the environmental factor is a necessary condition for the integration of the Ukrainian economy into world economic processes in order to ensure its competitiveness. Ukrainian enterprises face an important issue of the need to understand environmental prioritiesin the implementation of production and economic activities. That is why the introduction of new technologies, improving environmental culture, compliance with generally accepted environmental standards, the search for effective tools for environmental and economic management of enterprises, territories and regions is a necessary component of future sustainable development. In turn, the practical implementation of the principles of environmentally sustainable development of economic, socio-economic systems necessitates the improvement of methods, methods and tools of production organization based on the greening of the logistics management system. It has become clear that the economy needs to be reorganized so that human industrial activity is fully integrated into an efficient environmental infrastructure. Thus, the study of the process of transport waste management in Ukraine and the world is relevant today. Transport infrastructure includes railways, trams and inland waterways, contact lines, highways, tunnels, overpasses, bridges, railway stations, railway and bus stations, subways, airfields and airports, communication, navigation and traffic management facilities. vehicles, as well as other structures, devices and equipment. Vehicles include aircraft, railway rolling stock, vessels used for the purpose of merchant shipping or shipping, rolling stock of road and electric urban land passenger transport. The subject of the research is the ability of microorganisms isolated from the landfills of the transport infrastructure of Kyiv to biodegrade fuel and lubricants. Research methods: monographic, analytical methods, standard microbiological and research of physicochemical and operational properties of kerosene and diesel fuel. The purpose of research: to investigate the ability of microorganisms isolated from the landfill of the transport infrastructure of Kyiv to the destruction / degradation of fuels. Further use of isolated microorganisms in biodegradation technologies of waste fuels and oils. Achieved results: the ability of a complex of micro-organisms isolated from the landfill of transport infrastructure of Kyiv to the destruction / degradation of fuels was studied; developed an algorithm and method for isolating a complex and pure cultures of microorganisms capable of destruction / degradation of hydrocarbons of petroleum products (diesel fuel, kerosene); developed a method of utilization of waste fuels and lubricants and solid organic (food) waste using isolated from samples taken at landfills of transport infrastructure.
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