The chemical fundamentals of one variant of the chelate method of combined removal of sulfur and nitrogen oxides from flue gases were described. Special attention was paid for chemical reactions responsible for production of solid wastes. A flow sheet of the technology was presented and the operation of industrial installation of SO2, NOx and dust from combustion gases of two 29 MW, grate boilers each was described. The material balance of the process was made and the quantity of solid wastes produced during 3 weeks test of the technology was presented.

The measurement of SO2, and fluorine compounds concentrations in the air at 8 points on the King George Island, South Shetland Islands, were done in January and February 1979. The received values were similar to the ones for regions recognized as the world background areas. The activity of the Polish Antarctic Station did not influence the air pollution status neither in its surroundings, nor in penguins colonies and extinct volcano areas on Penguin Island.

In this paper a method of analyzing air pollution data in an optional automatic measuring station, allowing for identification of the directions of the pollution inflow has been presented. The method is based on four parameters provided by the measuring station: pollution concentration, wind direction, wind speed and fluctuation of the wind directions. For the description of the wind direction fluctuation in 30-minutes' periods a coefficient of relative turbulent diffusion rr(3, 30) was used, which is defined as a deviation of 3-minutes' wind vectors from the 30-minutes' vector. The presented method was applied for identification of the inflow directions of SO2 and NO2 using the measuring data from a telemetric system OPSIS at the Institute for Ecology of Industrial Areas in Katowice-Załęże.

This article presents the topic of atmospheric pollution. The authors have presented the most important national air-quality regulations. They have identified measurement stations in Kraków (Poland), collected data from them and conducted their analysis. The aim of the article is to present the research results on developing a statistical model for estimating air pollution in Kraków depending on the changing weather conditions during the year. The authors used the mathematical modelling method to prepare the air-pollution model. The article presents collected data showing the situation prior to the introduction of a number of environmental regulations in the city of Kraków. The paper is based on meteorological data in the form of daily average values of air temperature, wind speed, air humidity, pressure and precipitation. Emission data included the average daily concentrations of the selected air pollutants, including sulfur dioxide (SO2), nitrogen dioxide (NO2), nitrogen oxides (NOx), nitrogen oxide (NO), carbon monoxide (CO), ozone (O3) and particulate matter PM10 and PM2.5. The results of the study indicate that the three most significant factors influencing the level of air pollution (appearing as explanatory changes in the models for each of the pollutants listed) are the value of ambient air temperature (a destimulant, except for ozone), wind speed (a destimulant) and the concentration of each pollutant on the previous day (a stimulant). The article concludes with a summary and conclusions.

An analysis of the methods used in Bulgaria for estimating CO2, SO2 and dust emissions has been conducted. The first methodology, which is officially used by all energy auditors at the Agency for Sustainable Energy Development targets the energy efficiency of combustion devices installed mainly at industrial enterprises. The second methodology, used by the Ministry of Environment and Water, is more comprehensive and can be applied to thermal power plants, small combustion plants as well as industrial systems. In recent years, many projects related to energy efficiency and renewable energy projects, including hydrogen technologies, which require an assessment of reduced greenhouse gas emissions, have been implemented as a priority. The use of reliable and accurate methods is essential in the assessment of greenhouse emissions. A novel methodology, based on stoichiometric equations of the combustion process for solid, liquid and gaseous fuels has been proposed and comprised. This novel methodology is characterized by higher precision compared to the methods currently in place and this is achieved through calculating emissions from the combustion of energy fuels accounting for the full elemental composition of the fuel and its heating value, whereas the current commonly applied methods use only the fuel type and the carbon content. A further benefit of the proposed methodology is the ability to estimate emissions of fuels for which there is no alternative method for calculating CO2, SO2 and dust. Results of emission calculations according to the analysed methods are presented. Finally, a comparative analysis between the presented methodologies including an assessment of their accuracy and universal applicability has been made.

In order to improve the efficiency of power generation system and reduce CO2 emissions power plants work at high temperature and pressure. Under such conditions modified steel 9Cr, which fulfils the requirements concerning creep resistance, is used. However, Cr2O3 formed on the steel does not protect the construction material in the atmosphere which contains CO2 and SO2. The aim of the experiment was to study the behaviour of P91 steel in CO2 atmosphere with the addition of 1% and 5 vol.% of SO2 at different temperatures (700, 800 and 900°C). It was concluded that the corrosion rate of P91 steel is increasing with a rise in temperature. Scales formed in CO2 atmosphere at 900°C contain a mixture of iron oxides in the outer layer and chromium-iron spinel in the inner layer. The FeS and Ni were found in the inner zone of scales formed in SO2 atmosphere.