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Wyszukujesz frazę "sulphur dioxide" wg kryterium: Temat


Tytuł:
Numerical model of so2 scrubbing with seawater applied to marine engines
Autorzy:
Lamas, M. I.
Rodríguez, C. G.
Rodríguez, J. D.
Telmo, J.
Powiązania:
https://bibliotekanauki.pl/articles/258856.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
sulphur dioxide
SO2
scrubbers
CFD
Opis:
The present paper proposes a CFD model to study sulphur dioxide (SO2) absorption in seawater. The focus is on the treatment of marine diesel engine exhaust gas. Both seawater and distilled water were compared to analyze the effect of seawater alkalinity. The results indicate that seawater is more appropriate than distilled water due to its alkalinity, obtaining almost 100% cleaning efficiency for the conditions analyzed. This SO2 reduction meets the limits of SOx emission control areas (SECA) when operating on heavy fuel oil. These numerical simulations were satisfactory validated with experimental tests. Such data are essential in designing seawater scrubbers and judging the operating cost of seawater scrubbing compared to alternative fuels.
Źródło:
Polish Maritime Research; 2016, 2; 42-47
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Issues of the Impact of Granulated Sulfur Transportation on the Environmental Components
Autorzy:
Ivanov, Andrey V.
Smirnov, Yuriy D.
Lisay, Viktoria V.
Borowski, Gabriel
Powiązania:
https://bibliotekanauki.pl/articles/24201741.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
granulated sulphur
dust suppression
transportation
sulphur dioxide
spillage
ignition
Opis:
Nowadays, sulfur is considered one of the primary resources of the chemical industry, most of which is produced as a refinery by-product during the processing of oil and natural gas. Sulfur production volumes are increasing every year, while the demand for it does not always match the growing supply, which leads to a serious problem of sulfur surplus in the world market. Granulated sulfur – the main commercial type of elemental sulfur – is transported in large quantities both by land and sea and can have a negative impact on the environment. At the moment, the issue of the negative impact of granulated sulfur on the environment has not been fully studied, which determines the relevance of this research. This review article presents the global market of granulated sulfur, paying attention to its safe transport – from the producer to the consumer. The potentially harmful factors of the impact of sulfur handling on elements of the natural environment, such as atmospheric air, water reservoirs, soil and vegetation, were also taken into account.
Źródło:
Journal of Ecological Engineering; 2023, 24, 6; 86--97
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dependence of air quality conditions in cities in north-western Poland on the direction of air inflow
Autorzy:
Kicińska, Bożena
Mikulska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2032475.pdf
Data publikacji:
2006-06-01
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
North-western Poland
air pollution
sulphur dioxide
nitrogen dioxide
wind direction
Opis:
This paper presents the dependence of air pollution with sulphur dioxide and nitrogen dioxide on wind direction in Szczecin, Łeba, Elbląg and Zielona Góra in the period 19931999. It has been shown that the most disadvantageous air quality conditions in the cities listed above are on the days with air inflow from south-east, and the most advantageous on the days with advection from north-west. This dependence is particularly evident in the case of pollution with sulphur dioxide, especially in the cold half-year.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2006, 12; 81-86
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Removal of SO2 from gases on carbon materials
Autorzy:
Narkiewicz, U.
Pietrasz, A.
Pełech, I.
Arabczyk, W.
Powiązania:
https://bibliotekanauki.pl/articles/778340.pdf
Data publikacji:
2012
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
usuwanie dwutlenku siarki
nanowęgle
sulphur dioxide removal
nanocarbon materials
Opis:
The aim of the work is to describe a capability of the active carbon CARBON L-2-4 (AC) and of the nanocarbon (NC) materials containing iron nanoparticles to continuously remove SO2 from air. The carbon nanomaterials (NC) containing iron nanoparticles were synthesised using a chemical vapor deposition method - through catalytic decomposition of ethylene on nanocrystalline iron. The process of SO2 removal was carried out on dry and wet with water carbon catalyst (AC or NC) and was studied for inlet SO2 concentration 0.3 vol.% in the presence of O2, N2 and H2O, in the temperature range of 40-80°C.
Źródło:
Polish Journal of Chemical Technology; 2012, 14, 1; 41-45
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Case-crossover design: Air pollution and health outcomes
Autorzy:
Szyszkowicz, Mieczysław
Tremblay, Neil
Powiązania:
https://bibliotekanauki.pl/articles/2185393.pdf
Data publikacji:
2011-09-01
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
air pollution
city
depression
emergency department
humidity
temperature
nitrogen dioxide
sulphur dioxide
Opis:
Objectives: The objective of this study was to investigate variants of case-crossover design for assessing correlations between counts of health events over time and exposure to ambient air pollution. For illustrative purposes, daily emergency department (ED) visits for depression among females were considered. Materials and Method: Ambient nitrogen dioxide (NO₂) was used as a principal ambient air pollutant. In addition, sulphur dioxide (SO₂) and carbon monoxide (CO) were considered. Different configurations of the control periods (every 1, 2, …, 10 days) and different forms (linear, natural splines) of meteorological factors in the applied conditional logistic regression models were used. The sequence of overlapping age intervals was defined ([0, 19], [1, 20], and so on) and each age group was analyzed separately. The results for the defined age sequences allow identifying age ranges in which the effects are strongest. Results: Consequently, for example, different age ranges for patients for which ED visits for depression were correlated with NO₂ and SO₂ were identified. This age-interval difference explains the very often observed phenomenon whereby two air pollutants used in one model may not show correlations with health outcomes. In this situation they affect separate age groups. The results also show dependency on number-defined control periods for the applied case-crossover technique. The opposite statistical conclusions may be generated by using different control schemas. Conclusions: The results support the hypothesis that ED visits for depressive disorder may be correlated with exposure to ambient air pollution.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2011, 24, 3; 249-255
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dekompozycja redukcji emisji dwutlenku siarki w polskich elektrowniach, 1995-2008
Decomposition of sulphur dioxide emissions reduction in Polish power plants, 1995-2008
Autorzy:
Iskrzycki, K.
Suwała, W.
Kaszyński, P.
Powiązania:
https://bibliotekanauki.pl/articles/283048.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
dekompozycja
redukcja emisji
dwutlenek siarki
decomposition
emissions reduction
sulphur dioxide
Opis:
Celem niniejszego artykułu jest określenie jakie czynniki wpływają na zmianę emisji końcowej SO2 w elektrowniach w latach 1995-2008. Aby to osiągnąć utworzono model dekompozycyjny, wyszczególniający wielkości kształtujące emisję. Model zakłada zależność między czynnikami: procesowym, paliwowym, sprawności oraz popytu. Dzięki przedstawionym metodom możliwe było określenie efektów pochodzących od wymienionych czynników. Uzyskane wyniki wskazują, iż największy wpływ na zmianę emisji końcowej SO2 miały dwa pierwsze efekty: procesowy i paliwowy. Natomiast efekt sprawności oraz popytu nie wpłynął znacząco na wynik końcowy. Dwie z trzech zastosowanych metod dają porównywalne wyniki, zaś metoda dekompozycji niedoskonałej charakteryzuje się nieco zawyżonymi wartościami.
The purpose of the paper was to identify quantitatively factors influencing reduction of sulphur dioxide emission in Polish power stations between 1995 and 2008. A decomposition model was built and analyses dependences between the following factors: process - reduction due to desulphurization units; fuel - result of fuel switch or use of better quality fuel; efficiency - improvements of electricity production technologies; and demand - effect of electricity consumption variations. Various methods of effects evaluation were applied. Results of the study prove that the biggest influence on final emission of SO2 had process and fuel effects. Two out of three applied methods gave similar results, while method which does not perform perfect decomposition had residual.
Źródło:
Polityka Energetyczna; 2011, 14, 2; 107-125
1429-6675
Pojawia się w:
Polityka Energetyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Critical price of sulphur dioxide emission allowances
Autorzy:
Sowiński, J.
Powiązania:
https://bibliotekanauki.pl/articles/206196.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
decision-making investment model
emission of sulphur dioxide
tradable emission allowances
Opis:
The paper presents a decision-making model of environmental modernization in a power plant. The goal of the model is to analyse strategies implemented by power producers trying to comply with environmental regulations. Detailed analysis is related to the sulphur dioxide emission. Tradable emission allowances might be a new economic tool in fighting environmental problems in Poland. The model applies the real options approach. The approach is appropriate to model investments that are irreversible and an investor can afford to wait rather than invest immediately. The model assumes price uncertainty. The investment rule takes the form of a critical value optimal for immediate investment. The critical value of the project is calculated using dynamic programming. The project value follows a geometric Brownian motion. The results presented demonstrate that it is possible to calculate a critical price of emission allowances.
Źródło:
Control and Cybernetics; 2001, 30, 2; 191-201
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Photochemical activity, photosynthetic pigments and carbohydrates in poplar leaves fumigated with sulphur dioxide
Autorzy:
Szadel, A
Lorenc-Plucinska, G.
Karolewski, P.
Matysiak, R.
Powiązania:
https://bibliotekanauki.pl/articles/41307.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
pigment
photosynthetic pigment
Populus deltoides
sugar
sulphur dioxide
carotenoid
carbohydrate
chlorophyll
leaf
poplar
Opis:
The purpose of this study was to assess the influence of SO2 on photosynthetic apparatus and the level of total nonstructural carbohydrates (TNC) in developing and mature leaves of poplar (Populus deltoides). Photosynthetic apparatus was evaluated on the basis of fluorescence parameters (Fv/Fm, OPSII, qP and Rfd) and photosynthetic pigments (chlorophylls and carotenoids). Cuttings of poplar were exposed to 0.25 ppm of SO2 at 25°C and 200-300 mmol m-2s-1 PAR for 6 hours daily during 5 days in a fumigation chamber. The fumigation did not produce any significant differences in fluorescence parameters in neither developing nor mature leaves. In some mature leaves the concentration of pigments increased under the influence of SO2. Soluble carbohydrates decreased significantly both in developing and mature leaves and this was accompanied with an increase in starch accumulation. We suggest that Populus deltoides is a species tolerant to sulphur dioxide and the used SO2 dosage did not significantly impair the light reactions of photosynthesis, but it disturbed the accumulation of starch and the utilization of soluble carbohydrates in plants exposed to SO2.
Źródło:
Dendrobiology; 2003, 49
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The extraordinary world of Sulphur. Part 1
Autorzy:
Szydło, Zbigniew A.
Powiązania:
https://bibliotekanauki.pl/articles/31342693.pdf
Data publikacji:
2023
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
sulphur
sulphuric acid
sulphur dioxide
alchemy
chemistry
technology
siarka
kwas siarkowy
dwutlenek siarki
alchemia
chemia
technologia
Opis:
Sulphur is a highly reactive element, and is therefore able to enter into a great variety of chemical combinations, resulting in the formation of compounds of widely differing properties. Reactions involving sulphur, and the compounds which they produce, have stimulated and inspired people throughout the ages. Sulphur has always been associated with volcanoes, fires and smells. However, its story goes much further. Sulphur is present in thousands of products of the chemical industry, which are in everyday use. These include car batteries, car tyres, matches, paints, paper, textiles, food, detergents and pharmaceuticals. In part 1 of this essay, the evolution of the role of sulphur in the history of mankind is explained, through the eyes of etymology, geology, literature, art, and chemistry. In part 2 the role of sulphur in biochemistry and chemical technology is reviewed. In so doing, a case is established, to show that sulphur is the most extraordinary substance known to Man.
Źródło:
Chemistry-Didactics-Ecology-Metrology; 2023, 28, 1-2; 5-38
2084-4506
Pojawia się w:
Chemistry-Didactics-Ecology-Metrology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Legal aspects of low-emission shipping in the light of provisions of “sulphur directive” adopted by the European Union
Autorzy:
Madejska, B.
Powiązania:
https://bibliotekanauki.pl/articles/259460.pdf
Data publikacji:
2013
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship emissions
sulphur dioxide
nitrogen oxides
sulphur directive
MARPOL Annex VI
protection of the environment
control on sulphur emissions
Opis:
Shipping emits a variety of air pollutants: sulphur dioxide (SOx), nitrogen oxides (NOx ), carbon dioxide (CO2 ) and particulate matter PM. Air pollutant emissions from maritime transport can be transported over long distances and thus increasingly contribute to air quality problems. Key environmental regulations (international and European) coming into force in this decade address emissions of SOx , NOx , CO2 and PM to control and limit their impact in the atmosphere. In the European Union, accordingly to the legal regulations, in the sulphur emission control areas the required SOx content of fuel will be reduced from 1.5 % to 0.1 % beginning January 2015. Globally, from 2020 onwards, ships operating in all other European Sea areas will have to use fuels with sulphur content of 0.5 % or less.
Źródło:
Polish Maritime Research; 2013, 4; 87-94
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł

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