Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XI
Written by Marcel RUSCĂ, Levente DIMEN, Liviu MĂRCUȚĂ
Currently, the level of air pollution, especially in big cities, is above the allowed limits and this affects the health of the inhabitants and the environment. High levels of air pollution can cause a few respiratory and cardiovascular diseases. Based on these considerations, we draw attention to the major importance of research in the field of pollution, finding solutions to improve and minimize the negative effects of air pollution in general on the planet. Greater attention needs to be paid to actions to identify the sources of air pollution and its chemical composition, as well as to establish measures to monitor and improve the quality of the atmosphere. It is known that the level of air quality is influenced by the level of pollutant emissions. In the air we breathe, these emissions come from both stationary and mobile sources of pollution. Mainly road traffic, but also heating installations that use fossil fuels are the main suppliers of polluting emissions. The rapid evolution of technology, as well as fierce competition from car manufacturers, is having an increasing impact on global consumption trends, and in the coming years, until 2025, several major changes are announced. Carbon dioxide emissions are expected to decrease due to fuel efficiency and the use of ultra-efficient hybrid cars. It is estimated that by 2025, almost a third of the car's carbon dioxide emissions will be reduced, so a natural question about the resource consumption of these cars will be higher or lower. Europe is made up of 50 states, in 31 of which natural gas, compressed or liquefied, is used as fuel for light or heavy commercial vehicles. According to studies carried out by the European Environment Agency, it has been concluded that the change in pollutant emissions is directly related to the speed of traffic. Thus, the carbon emissions increase 1.5 - 2 times during the acceleration / braking cycles and up to 25 times in the case of idling and the concentration of the emission of noxious substances increases in proportion to the speed.
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