This page has only limited features, please log in for full access.
This paper presents an analysis of methods to increase the efficiency of heat transfer in heat exchangers. The scope of the research included analysis of efficiency optimization using the example of two tubular heat exchanger structures most often used in industry. The obtained efficiency of heat recovery from the ground of the examined exchangers was over 90%, enabling the reduction of emissions of the heating systems of buildings. The paper presents the results of tests of two types of heat pipes using R134A, R404A, and R407C working agents. The paper also presents the results of experimental tests using the R410A working medium. The results included in the study will also enable the effective use of land as a heat store.
Łukasz Adrian; Szymon Szufa; Piotr Piersa; Piotr Kuryło; Filip Mikołajczyk; Krystian Kurowski; Sławomir Pochwała; Andrzej Obraniak; Jacek Stelmach; Grzegorz Wielgosiński; Justyna Czerwińska; Przemysław Kubiak. Analysis and Evaluation of Heat Pipe Efficiency to Reduce Low Emission with the Use of Working Agents R134A, R404A and R407C, R410A. Energies 2021, 14, 1926 .
AMA StyleŁukasz Adrian, Szymon Szufa, Piotr Piersa, Piotr Kuryło, Filip Mikołajczyk, Krystian Kurowski, Sławomir Pochwała, Andrzej Obraniak, Jacek Stelmach, Grzegorz Wielgosiński, Justyna Czerwińska, Przemysław Kubiak. Analysis and Evaluation of Heat Pipe Efficiency to Reduce Low Emission with the Use of Working Agents R134A, R404A and R407C, R410A. Energies. 2021; 14 (7):1926.
Chicago/Turabian StyleŁukasz Adrian; Szymon Szufa; Piotr Piersa; Piotr Kuryło; Filip Mikołajczyk; Krystian Kurowski; Sławomir Pochwała; Andrzej Obraniak; Jacek Stelmach; Grzegorz Wielgosiński; Justyna Czerwińska; Przemysław Kubiak. 2021. "Analysis and Evaluation of Heat Pipe Efficiency to Reduce Low Emission with the Use of Working Agents R134A, R404A and R407C, R410A." Energies 14, no. 7: 1926.
Municipal waste management system modeling based on the mass balance of individual waste streams allows us to answer the question of how the system will react to organizational changes, e.g., to the expected reduction in the amount of plastics or the introduction of a deposit for glass and/or plastic packaging. Based on the data on Polish municipal solid waste and the forecast of changes in its quantity and composition, as well as demographic data, a balance model was prepared to assess the impact of introducing higher and higher levels of recycling, in accordance with the circular economy assumptions on the waste management system. It has been shown that, for the Polish composition of municipal waste, even if the assumed recycling levels of individual streams are achieved, achieving the general target level of 65% recycling in 2025/30 may not be feasible. The possibility of achieving a higher level of recycling will be possible due the introduction of selective ash collection from individual home furnaces, while the impact of reducing the amount of plastics or introducing a deposit on packaging is minimal. The calculations also showed that, to complete the waste management system in Poland, we need at least 3.5 million Mg/year of incineration processing capacity and the present state (approx. 1.3 million Mg/year) is insufficient.
Grzegorz Wielgosiński; Justyna Czerwińska; Szymon Szufa. Municipal Solid Waste Mass Balance as a Tool for Calculation of the Possibility of Implementing the Circular Economy Concept. Energies 2021, 14, 1811 .
AMA StyleGrzegorz Wielgosiński, Justyna Czerwińska, Szymon Szufa. Municipal Solid Waste Mass Balance as a Tool for Calculation of the Possibility of Implementing the Circular Economy Concept. Energies. 2021; 14 (7):1811.
Chicago/Turabian StyleGrzegorz Wielgosiński; Justyna Czerwińska; Szymon Szufa. 2021. "Municipal Solid Waste Mass Balance as a Tool for Calculation of the Possibility of Implementing the Circular Economy Concept." Energies 14, no. 7: 1811.
Nitrogen oxides, polychlorinated dibenzo-p-dioxins, and polychlorinated dibenzofurans are pollutants formed during thermal processes, in particular during the combustion of various fuels, including waste. They are classified as dangerous and highly toxic environmental pollutants whose emissions are strictly regulated. Many methods for reducing their emissions are known, but all involve additional production costs. For this reason, effective and cheap methods for removing these pollutants from exhaust gases are still sought. Selective non-catalytic reduction of nitrogen oxides is one of the more effective and cheaper methods for reducing these emissions. However, an alternative to expensive methods for dioxin and furan removal (catalysis, adsorption, etc.) may include using dioxin synthesis inhibitors. The authors propose a method for the simultaneous removal of both pollutants from flue gases using selective non-catalytic reduction technologies with dioxin synthesis inhibitors used as reducing agents.
Grzegorz Wielgosiński; Justyna Czerwińska; Olga Szymańska; Janusz Bujak. Simultaneous NOx and Dioxin Removal in the SNCR Process. Sustainability 2020, 12, 5766 .
AMA StyleGrzegorz Wielgosiński, Justyna Czerwińska, Olga Szymańska, Janusz Bujak. Simultaneous NOx and Dioxin Removal in the SNCR Process. Sustainability. 2020; 12 (14):5766.
Chicago/Turabian StyleGrzegorz Wielgosiński; Justyna Czerwińska; Olga Szymańska; Janusz Bujak. 2020. "Simultaneous NOx and Dioxin Removal in the SNCR Process." Sustainability 12, no. 14: 5766.
This publication presents research work which contains the optimum parameters of the agri-biomass: maize and oat straws torrefaction process. Parameters which are the most important for the torrefaction process and its products are temperature and residence time. Thermogravimetric analysis was performed as well as the torrefaction process using an electrical furnace on a laboratory scale at a temperature between 250–525 °C. These biomass torrefaction process parameters—residence time and temperature—were necessary to perform the design and construction of semi-pilot scale biomass torrefaction installations with a regimental dryer and a woody and agri-biomass regimental torrefaction reactor to perform a continuous torrefaction process using superheated steam. In the design installation the authors also focused on biochar, a bi-product of biofuel which will be used as an additive for natural bio-fertilizers. Kinetic analysis of torrefaction process using maize and oat straws was performed using NETZSCH Neo Kinetics software. It was found that kinetic analysis methods conducted with multiple heating rate experiments were much more efficient than the use of a single heating rate. The best representations of the experimental data for the straw from maize straw were found for the n-order reaction model. A thermogravimetric analysis, TG-MS analysis and VOC analysis combined with electrical furnace installation were performed on the maize and oat straw torrefaction process. The new approach in the work presented is different from that of current scientific achievements due to the fact that until now researchers have worked on performing processes on oat and maize straws by means of the torrefaction process for the production of a biochar as an additive for natural bio-fertilizers. None of them looked for economically reasonable mass loss ratios. In this work the authors made the assumption that a mass loss in the area of 45–50% is the most reasonable loss for the two mentioned agri-biomass processes. On this basis, a semi-pilot installation could be produced in a further BIOCARBON project step. The kinetic parameters which were calculated will be used to estimate the size of the apparatuses, the biomass dryer, and biomass torrefaction reactor.
Szymon Szufa; Grzegorz Wielgosiński; Piotr Piersa; Justyna Czerwińska; Maria Dzikuć; Łukasz Adrian; Wiktoria Lewandowska; Marta Marczak. Torrefaction of Straw from Oats and Maize for Use as a Fuel and Additive to Organic Fertilizers—TGA Analysis, Kinetics as Products for Agricultural Purposes. Energies 2020, 13, 2064 .
AMA StyleSzymon Szufa, Grzegorz Wielgosiński, Piotr Piersa, Justyna Czerwińska, Maria Dzikuć, Łukasz Adrian, Wiktoria Lewandowska, Marta Marczak. Torrefaction of Straw from Oats and Maize for Use as a Fuel and Additive to Organic Fertilizers—TGA Analysis, Kinetics as Products for Agricultural Purposes. Energies. 2020; 13 (8):2064.
Chicago/Turabian StyleSzymon Szufa; Grzegorz Wielgosiński; Piotr Piersa; Justyna Czerwińska; Maria Dzikuć; Łukasz Adrian; Wiktoria Lewandowska; Marta Marczak. 2020. "Torrefaction of Straw from Oats and Maize for Use as a Fuel and Additive to Organic Fertilizers—TGA Analysis, Kinetics as Products for Agricultural Purposes." Energies 13, no. 8: 2064.
All municipal waste incineration plants operating in Poland are discussed and their flue gas treatment systems are described in detail in the article. A comparison of performance indicators, i.e. the amount of raw materials consumed particularly in flue gas treatment systems, is presented. The article also summarizes the results of emission measurements for eight incineration plants in the years 2016–2019.
Justyna Czerwińska; Grzegorz Wielgosiński. Functioning of the flue gas treatment system in Polish municipal waste incineration plants. Przegląd Naukowy Inżynieria i Kształtowanie Środowiska 2020, 29, 108 -119.
AMA StyleJustyna Czerwińska, Grzegorz Wielgosiński. Functioning of the flue gas treatment system in Polish municipal waste incineration plants. Przegląd Naukowy Inżynieria i Kształtowanie Środowiska. 2020; 29 (1):108-119.
Chicago/Turabian StyleJustyna Czerwińska; Grzegorz Wielgosiński. 2020. "Functioning of the flue gas treatment system in Polish municipal waste incineration plants." Przegląd Naukowy Inżynieria i Kształtowanie Środowiska 29, no. 1: 108-119.
The phenomenon of above-average air pollution, i.e., smog, in urban areas is known. Two types of smog have been described in the literature: London and Los Angeles smog. They differ in the conditions of formation and areas of occurrence. In recent years, the phenomenon of smog has also been observed in Poland, where the main reason for poor air quality is exceeding the permissible PM10 concentrations. The main source of particulate matter emissions in Poland is the so-called “low emission”, i.e., released by emitters up to 40 m high, mainly from domestic boilers and traffic. Based on the data from the environmental protection inspection, an analysis was carried out of the impact of atmospheric factors, such as atmospheric pressure and air temperature, on air pollution caused by particulate matter in Poland. Next, data concerning the chemical composition of PM10 particulate matter in Poland was analyzed. In the next stage, tests were carried out on ammonia emissions from biomass and coal combustion processes to determine the source of ammonium ions as a component of particulate matter. The results of analyzes and research allowed us to formulate the thesis about the existence of a specific type of smog called “Polish smog” and determine the conditions for its formation.
Grzegorz Wielgosiński; Justyna Czerwińska. Smog Episodes in Poland. Atmosphere 2020, 11, 277 .
AMA StyleGrzegorz Wielgosiński, Justyna Czerwińska. Smog Episodes in Poland. Atmosphere. 2020; 11 (3):277.
Chicago/Turabian StyleGrzegorz Wielgosiński; Justyna Czerwińska. 2020. "Smog Episodes in Poland." Atmosphere 11, no. 3: 277.
Justyna Czerwińska; Grzegorz Wielgosiński. The Effect of Selected Meteorological Factors on the Process of “Polish Smog” Formation. Journal of Ecological Engineering 2020, 21, 180 -187.
AMA StyleJustyna Czerwińska, Grzegorz Wielgosiński. The Effect of Selected Meteorological Factors on the Process of “Polish Smog” Formation. Journal of Ecological Engineering. 2020; 21 (1):180-187.
Chicago/Turabian StyleJustyna Czerwińska; Grzegorz Wielgosiński. 2020. "The Effect of Selected Meteorological Factors on the Process of “Polish Smog” Formation." Journal of Ecological Engineering 21, no. 1: 180-187.
In recent years, every winter we face the problem of excessive air pollution in the cities in Poland. This phenomenon is usually called smog and is associated with the concept of acidic smog of London type. However, there is a fundamental difference between the Great Smog of London known from the literature and winter smog episodes in Poland. While in 1952 in London the smog occurred at low atmospheric pressure, in foggy and windless weather conditions, in Poland smog episodes occur most often at the influx of cold, high-pressure air masses from the east in sunny weather. There are also various harmful components of smog - in London it was dust (suspended particulate matter), sulfur dioxide and carbon monoxide, while in Poland it is suspended particulate matter and polyaromatic hydrocarbons, especially benzo(a)pyrene. A common factor is the inversion of temperature in the ground level of the atmosphere. The chemical composition of the “Polish smog” is analyzed in the study justifying the need to distinguish the two types of smog described.
Justyna Czerwińska; Grzegorz Wielgosiński; Olga Szymańska. Is the Polish Smog a New Type of Smog? Ecological Chemistry and Engineering S 2019, 26, 465 -474.
AMA StyleJustyna Czerwińska, Grzegorz Wielgosiński, Olga Szymańska. Is the Polish Smog a New Type of Smog? Ecological Chemistry and Engineering S. 2019; 26 (3):465-474.
Chicago/Turabian StyleJustyna Czerwińska; Grzegorz Wielgosiński; Olga Szymańska. 2019. "Is the Polish Smog a New Type of Smog?" Ecological Chemistry and Engineering S 26, no. 3: 465-474.
In Poland, incineration is a relatively new method of waste treatment. Modern installations for waste incineration have two functions: they reduce the quantity (volume) of the waste and are a source of electricity and/or heat. During all combustion processes including waste incineration, polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCD/Fs) (well known as dioxins) are formed. These compounds are considered to be extremely dangerous for living organisms including human beings. Dioxins are formed in any process of combustion of solid and liquid fuels in the presence of chlorine, oxygen and organic matter at appropriate temperatures. Combustion processes also occur during cigarette smoking, which is also a source of dioxin emissions. Although smoking has been classified as a less important source of dioxins in the environment, it directly affects our health. This work’s aim is to determine and compare the degree of harmfulness caused by the amount of inhaled dioxins: cigarette smoking or living near a waste incineration plant. Based on literature and experimental data, the concentration of dioxins in cigarette smoke and exhaust gases generated by municipal waste incineration plants as well as number of dioxins absorbed per day by the body will be presented.
Justyna Czerwińska; Grzegorz Wielgosiński. Cigarette smoke or exhaust gas from waste incineration – where are more dioxins? Acta Innovations 2019, 86 -93.
AMA StyleJustyna Czerwińska, Grzegorz Wielgosiński. Cigarette smoke or exhaust gas from waste incineration – where are more dioxins? Acta Innovations. 2019; (31):86-93.
Chicago/Turabian StyleJustyna Czerwińska; Grzegorz Wielgosiński. 2019. "Cigarette smoke or exhaust gas from waste incineration – where are more dioxins?" Acta Innovations , no. 31: 86-93.
Variations in immission fields resulting from emissions and pollutant dispersion in the atmosphere were investigated. The analysis was based on data from the four-year period covering the years 2012-2015, collected in two automatic atmospheric air monitoring stations, one located in Germany in Magdeburg which is the capital of Saxony-Anhalt and the other in Poland in Lodz, i.e. the seat of Lodz Region authorities. Selected immission monitoring stations in both cities are located in the areas with similar urban development and are characterized by high levels of pedestrian and car traffic. In both measuring stations the following atmospheric air pollutants were measured: PM10, sulfur dioxide, nitrogen oxide and nitrogen dioxide, and ozone (carbon monoxide was analyzed only for the station located in Lodz). On the basis of the measured data the periodic exceedance of air pollution limit values measured at both monitoring stations were observed, as well as the levels of particular pollutants and changes in immission fields were analyzed. It seems that this information may be useful not only to the competent authorities of the country but also to the users of these areas.
Robert Cichowicz; Grzegorz Wielgosiński. Analysis of Variations in Air Pollution Fields in Selected Cities in Poland and Germany. Ecological Chemistry and Engineering S 2018, 25, 217 -227.
AMA StyleRobert Cichowicz, Grzegorz Wielgosiński. Analysis of Variations in Air Pollution Fields in Selected Cities in Poland and Germany. Ecological Chemistry and Engineering S. 2018; 25 (2):217-227.
Chicago/Turabian StyleRobert Cichowicz; Grzegorz Wielgosiński. 2018. "Analysis of Variations in Air Pollution Fields in Selected Cities in Poland and Germany." Ecological Chemistry and Engineering S 25, no. 2: 217-227.
In recent years, in the winter season we are alarmed about the poor air quality in Poland and significantly exceeded permissible concentrations of certain pollutants, especially PM10 and PM2.5, which are a result of so-called low emissions. The authors analyze smog episodes in the Lodz agglomeration by comparing the recorded values of selected pollutant concentrations at monitoring stations of the Regional Inspectorate for Environmental Protection in Lodz with the meteorological conditions prevailing at this time. The analysis covers data from the years 2014-2017.
Grzegorz Wielgosiński; Justyna Czerwinska; Olga Namiecińska; Robert Cichowicz. Smog episodes in the Lodz agglomeration in the years 2014-17. E3S Web of Conferences 2018, 28, 1039 .
AMA StyleGrzegorz Wielgosiński, Justyna Czerwinska, Olga Namiecińska, Robert Cichowicz. Smog episodes in the Lodz agglomeration in the years 2014-17. E3S Web of Conferences. 2018; 28 ():1039.
Chicago/Turabian StyleGrzegorz Wielgosiński; Justyna Czerwinska; Olga Namiecińska; Robert Cichowicz. 2018. "Smog episodes in the Lodz agglomeration in the years 2014-17." E3S Web of Conferences 28, no. : 1039.
In recent years, five modern municipal waste incineration plants have been built in Poland. Next ones are being constructed and at the same time building of several others is being considered. Despite positive experience with the operation of the existing installations, each project of building a new incinerator raises a lot of emotions and social protests. The main argument against construction of an incineration plant is the emission of pollutants. The work compares emissions from municipal waste incineration plants with those from typical heating plants: in the first part, for comparison large heating plants equipped with pulverized coal-fired boilers (OP-140), stoker-fired boilers (three OR-32 boilers) or gas blocks with heat output of about 100 MW have been selected, while the second part compares WR-10 and WR-25 stoker-fired boilers most popular in our heating industry with thermal treatment systems for municipal waste or refuse-derived-fuel (RDF) with similar heat output. Both absolute emission and impact - immission of pollutants in vicinity of the plant were analyzed.
Grzegorz Wielgosiński; Olga Namiecińska; Justyna Czerwinska. Environmental impact of emissions from incineration plants in comparison to typical heating systems. E3S Web of Conferences 2018, 28, 1038 .
AMA StyleGrzegorz Wielgosiński, Olga Namiecińska, Justyna Czerwinska. Environmental impact of emissions from incineration plants in comparison to typical heating systems. E3S Web of Conferences. 2018; 28 ():1038.
Chicago/Turabian StyleGrzegorz Wielgosiński; Olga Namiecińska; Justyna Czerwinska. 2018. "Environmental impact of emissions from incineration plants in comparison to typical heating systems." E3S Web of Conferences 28, no. : 1038.
Seasonal variation of air pollution is associated with variety of seasons and specificity of particular months which form the so-called summer and winter season also known as the “heating” season. The occurrence of higher values of air pollution in different months of a year is associated with the type of climate, and accordingly with different atmospheric conditions in particular months, changing state of weather on a given day, and anthropogenic activity. The appearance of these conditions results in different levels of air pollution characteristic for a given period. The study uses data collected during a seven-year period (2009–2015) in the automatic measuring station of immissions located in Eastern Wielkopolska. The analysis concerns the average and maximum values of air pollution (i.e., particulate matter PM10, sulfur dioxide, nitrogen dioxide, carbon monoxide, and ozone) from the perspective of their occurrence in particular seasons and months or in relation to meteorological actors such as temperature, humidity, and wind speed.
Robert Cichowicz; Grzegorz Wielgosiński; Wojciech Fetter. Dispersion of atmospheric air pollution in summer and winter season. Environmental Monitoring and Assessment 2017, 189, 1 -10.
AMA StyleRobert Cichowicz, Grzegorz Wielgosiński, Wojciech Fetter. Dispersion of atmospheric air pollution in summer and winter season. Environmental Monitoring and Assessment. 2017; 189 (12):1-10.
Chicago/Turabian StyleRobert Cichowicz; Grzegorz Wielgosiński; Wojciech Fetter. 2017. "Dispersion of atmospheric air pollution in summer and winter season." Environmental Monitoring and Assessment 189, no. 12: 1-10.
Grzegorz Wielgosiński; Patrycja Łechtańska; Olga Namiecińska. Emission of some pollutants from biomass combustion in comparison to hard coal combustion. Journal of the Energy Institute 2017, 90, 787 -796.
AMA StyleGrzegorz Wielgosiński, Patrycja Łechtańska, Olga Namiecińska. Emission of some pollutants from biomass combustion in comparison to hard coal combustion. Journal of the Energy Institute. 2017; 90 (5):787-796.
Chicago/Turabian StyleGrzegorz Wielgosiński; Patrycja Łechtańska; Olga Namiecińska. 2017. "Emission of some pollutants from biomass combustion in comparison to hard coal combustion." Journal of the Energy Institute 90, no. 5: 787-796.
Life Cycle Assessment (LCA) is one of the new, little more popular in Poland of elements of environmental management. In the world literature one can find many examples of the use of LCA but mainly for comparison purposes. The paper presents results of LCA analysis made on the basis of data from a running incineration of sewage sludge. Performing a thorough analysis of this process enables improved operational system, including through a better use of the resulting products of combustion, as well as determining the impact of the thermal treatment of sludge on the environment and compared the results with data from the literature. To date, in Poland has not been carried out environmental impact assessments and the process of thermal treatment of both sludge and waste, based on the assumptions of LCA.
Grzegorz Wielgosiński; Robert Cichowicz; Agata Targaszewska; Jacek Wiśniewski. The Use of LCA Method to Assess Environmental Impact of Sewage Sludge Incineration Plants. Ecological Chemistry and Engineering S 2017, 24, 263 -275.
AMA StyleGrzegorz Wielgosiński, Robert Cichowicz, Agata Targaszewska, Jacek Wiśniewski. The Use of LCA Method to Assess Environmental Impact of Sewage Sludge Incineration Plants. Ecological Chemistry and Engineering S. 2017; 24 (2):263-275.
Chicago/Turabian StyleGrzegorz Wielgosiński; Robert Cichowicz; Agata Targaszewska; Jacek Wiśniewski. 2017. "The Use of LCA Method to Assess Environmental Impact of Sewage Sludge Incineration Plants." Ecological Chemistry and Engineering S 24, no. 2: 263-275.
International publishers of academic, scientific and professional journals since 1979.
Adam Grochowalski; Mariusz Holtzer; Włodzisław Ćwiąkalski; Grzegorz Wielgosiński; Patrycja Łechtańska. Dioxin emission from some metallurgical processes. International Journal of Environment and Pollution 2017, 61, 261 .
AMA StyleAdam Grochowalski, Mariusz Holtzer, Włodzisław Ćwiąkalski, Grzegorz Wielgosiński, Patrycja Łechtańska. Dioxin emission from some metallurgical processes. International Journal of Environment and Pollution. 2017; 61 (3/4):261.
Chicago/Turabian StyleAdam Grochowalski; Mariusz Holtzer; Włodzisław Ćwiąkalski; Grzegorz Wielgosiński; Patrycja Łechtańska. 2017. "Dioxin emission from some metallurgical processes." International Journal of Environment and Pollution 61, no. 3/4: 261.
Results of the measurements of emissions of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans in two metallurgical plants representing ferrous metallurgy (an iron ore sintering plant) and non-ferrous metallurgy (a secondary copper smelter) are discussed in the paper. In the case of the secondary copper smelter dioxin concentrations were determined in the range from 0.03 to 8.1 ng TEQ/Nm
Patrycja Łechtańska; Grzegorz Wielgosiński; Adam Grochowalski; Mariusz Holtzer; Włodzisław Ćwiąkalski. Dioxin emission from some metallurgical processes. International Journal of Environment and Pollution 2017, 61, 261 .
AMA StylePatrycja Łechtańska, Grzegorz Wielgosiński, Adam Grochowalski, Mariusz Holtzer, Włodzisław Ćwiąkalski. Dioxin emission from some metallurgical processes. International Journal of Environment and Pollution. 2017; 61 (3/4):261.
Chicago/Turabian StylePatrycja Łechtańska; Grzegorz Wielgosiński; Adam Grochowalski; Mariusz Holtzer; Włodzisław Ćwiąkalski. 2017. "Dioxin emission from some metallurgical processes." International Journal of Environment and Pollution 61, no. 3/4: 261.
In quantitative terms, sludge produced in the process of municipal wastewater treatment represents a small part of the total waste generated in municipal sources - its quantity represents only a few percent of the generated mass of municipal waste. However, the threats it brings, do not allow it to be neglected while designing the wastewater treatment process. At the same time, with increasing requirements regarding the quality of sewage discharged into the environment, there is an increase in the amount of sludge produced in wastewater treatment processes. In recent years, the share of thermal treatment of municipal sewage sludge has risen sharply - about 12 modern sludge incineration plants have been built and construction of new ones is considered. During more than a four-year operation of the sewage sludge incineration plant in the Combined Sewage Treatment Plant in Lodz (GOS) a large ammonia emission from the combustion process was observed. So, a decision was taken to examine this process. The paper presents results of ammonia emission from the combustion of sewage sludge from GOS as a function of temperature.
Grzegorz Wielgosiński; Robert Cichowicz; Jacek Wiśniewski. Ammonia Emission from Sewage Sludge Incineration Process. Ecological Chemistry and Engineering S 2016, 23, 665 -675.
AMA StyleGrzegorz Wielgosiński, Robert Cichowicz, Jacek Wiśniewski. Ammonia Emission from Sewage Sludge Incineration Process. Ecological Chemistry and Engineering S. 2016; 23 (4):665-675.
Chicago/Turabian StyleGrzegorz Wielgosiński; Robert Cichowicz; Jacek Wiśniewski. 2016. "Ammonia Emission from Sewage Sludge Incineration Process." Ecological Chemistry and Engineering S 23, no. 4: 665-675.
Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans are generally considered the most dangerous chemical substances known to man. Although they have never been the product of purposeful human activity, yet they are formed in many chemical and virtually all thermal processes. Research on the occurrence of dioxins in the environment, their release into the environment, ways of formation and methods of reducing their emissions lasts since the late seventies of the last century. Currently, we know three basic pathways of dioxins formation in thermal processes, the most important of them being the so called de novo synthesis which occurs outside the combustion zone at 200-400°C in the presence of catalysts (eg copper) and oxygen from the products of incomplete combustion including carbon black and chlorine or chlorinated compounds. It is well known that some metals like copper catalyze the de novo synthesis, while others decompose dioxins and furans formed previously. The formation of dioxins resulting from the de novo synthesis was studied through analysis of the effect of the type of metal on the course of the de novo synthesis. The influence of the addition of sulfur, nitrogen and alkali metals on this synthesis was also examined because some reports in the literature refer to inhibitory effect of these elements.
Grzegorz Wielgosiński; Olga Namiecińska; Patrycja Łechtańska; Adam Grochowalski. Effect of selected additions on de novo synthesis of polychlorinated dioxins and furans. Ecological Chemistry and Engineering S 2016, 23, 249 -257.
AMA StyleGrzegorz Wielgosiński, Olga Namiecińska, Patrycja Łechtańska, Adam Grochowalski. Effect of selected additions on de novo synthesis of polychlorinated dioxins and furans. Ecological Chemistry and Engineering S. 2016; 23 (2):249-257.
Chicago/Turabian StyleGrzegorz Wielgosiński; Olga Namiecińska; Patrycja Łechtańska; Adam Grochowalski. 2016. "Effect of selected additions on de novo synthesis of polychlorinated dioxins and furans." Ecological Chemistry and Engineering S 23, no. 2: 249-257.
Analysis of the distribution of CO2 concentrations was performed for a water-and-steam boiler plant located in a detached building supplying thermal energy to a hospital. The boiler plant was equipped with two low-temperature boilers and one high-temperature steam boiler. The maximum thermal energy demand of the hospital was 4280, 3500 kW of which came from the hot-water boilers and the remaining 780 kW from the steam boiler. Due to the operating system there were no permanent job positions in the boiler plant. Servicing consisted only in the supervision, periodic adjustment and maintenance of the equipment. These kinds of working conditions release the employer from the necessity to perform tests and measurements of working conditions in such a building. On the other hand, continuous measurements are made because of the installation safety and emissions of pollutants into the environment. The article presents results of the measurements and analysis of the distribution of CO2 concentrations inside and outside a small boiler plant, due to which it was found that the level of carbon dioxide concentration did not depend on the ambient air temperature. The resulting values are similar regardless of whether the measurements were taken in December 2012 or April 2013. However, there is an evident impact of seasons on the concentrations in the indoor air associated primarily with the demand for heat during the given period, the stay of people in the workplace and the number of working devices.
Robert Cichowicz; Grzegorz Wielgosiński; Agata Targaszewska. Analysis of CO2 concentration distribution inside and outside small boiler plants. Ecological Chemistry and Engineering S 2016, 23, 49 -60.
AMA StyleRobert Cichowicz, Grzegorz Wielgosiński, Agata Targaszewska. Analysis of CO2 concentration distribution inside and outside small boiler plants. Ecological Chemistry and Engineering S. 2016; 23 (1):49-60.
Chicago/Turabian StyleRobert Cichowicz; Grzegorz Wielgosiński; Agata Targaszewska. 2016. "Analysis of CO2 concentration distribution inside and outside small boiler plants." Ecological Chemistry and Engineering S 23, no. 1: 49-60.