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Wyświetlanie 1-25 z 262
Tytuł:
Reduction of organic and inorganic pollutant from waste water by algae
Autorzy:
Sahu, O.
Powiązania:
https://bibliotekanauki.pl/articles/11244.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
pollutant
reduction
organic pollutant
inorganic pollutant
waste water
alga
Opis:
Recently, algae have become significant organisms for biological purification of wastewater since they are able to accumulate plant nutrients, heavy metals, pesticides, organic and inorganic toxic substances and radioactive matters in their cells/bodies. Biological wastewater treatment systems with micro algae have particularly gained importance in last 50 years and it is now widely accepted that algal wastewater treatment systems are as effective as conventional treatment systems. These specific features have made algal wastewaters treatment systems an significant low-cost alternatives to complex expensive treatment systems particularly for purification of municipal wastewaters. By this method 70 % of biological oxygen demand, 66 % of chemical oxygen demand, 71 % total nitrogen, 67 % of phosphorus, 54 % volatile solid and 51 % of dissolved solid was reduced.
Źródło:
International Letters of Natural Sciences; 2014, 08, 1
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Określenie wskaźników uwolnień z pieców wapienniczych dla zanieczyszczeń rekomendowanych w rejestrze PRTR
Determination of pollutant release factors recommended for lime kilns in PRTR registry
Autorzy:
Głodek, E.
Sładeczek, F.
Powiązania:
https://bibliotekanauki.pl/articles/392340.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Ceramiki i Materiałów Budowlanych
Tematy:
piec wapienniczy
emisja zanieczyszczeń
zanieczyszczenie pyłowe
zanieczyszczenie gazowe
współczynnik uwolnienia zanieczyszczeń
lime kiln
pollutant emission
dust pollutant
gas pollutant
pollutant release factor
Opis:
Prowadzący instalację, zgodnie z rozporządzeniem Parlamentu Europejskiego i Rady z dnia 18 stycznia 2006 r. nr 166/2006 w sprawie ustanowienia Europejskiego Rejestru Uwalniania i Transferu Zanieczyszczeń, są zobowiązani do sporządzenia rocznego raportu zgodnie z E-PRTR. Aktualnie zakłady przemysłowe wykorzystują w tym celu dostępne wskaźniki literaturowe dla danego zanieczyszczenia uwalnianego do powietrza. Dla większości zanieczyszczeń z listy PRTR brak jest wskaźników emisyjnych opartych na danych europejskich. W celu oszacowania tych wskaźników dla przemysłu wapienniczego przeprowadzono pomiary emisji zanieczyszczeń z listy PRTR na czterech piecach szybowych.
The facility operators, in accordance with Regulation of the European Parliament and the Council of 18 January 2006, No. 166/2006 concerning the establishment of a European Pollutant Release and Transfer Register, are required to deliver an annual E-PRTR report. Currently industrial plants use for this purpose literature available factors for a given pollutant released into the air. For most pollutants from the PRTR list, there is no emission factors based on European data. In order to estimate these factors for the lime industry emissions from PRTR list were measured on four shaft kilns.
Źródło:
Prace Instytutu Ceramiki i Materiałów Budowlanych; 2011, R. 4, nr 8, 8; 79-87
1899-3230
Pojawia się w:
Prace Instytutu Ceramiki i Materiałów Budowlanych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Air Quality Assessment and Forecasting Using Neural Network Model
Autorzy:
Hamdan, Mohammad A.
Ata, Mohammad F. Bani
Sakhrieh, Ahmad H.
Powiązania:
https://bibliotekanauki.pl/articles/1838288.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
air pollutant
ANN
MATLAB
forecasting
Opis:
Air pollution is a major obstacle faced by all countries which impacts the environment, public health, socioeconomics, and agriculture. In this study, the air pollutants in the city of Amman were presented and analyzed. Nonlinear Autoregressive Exogenous (NARX) model was used to forecast the daily average levels of pollutants in Amman, Jordan. The model was built using the MATLAB software. The model utilized a Marquardt-Levenberg learning algorithm. Its performance was presented using different indices, R2 (Coefficient of Determination), R (Coefficient of Correlation), NMSE (Normalized Mean Square Error), and Plots representing network predictions vs original data. Historical measurements of air pollutants were obtained from 4 of the Ministry of Environment (MoEnv) air quality monitoring stations in Amman. The meteorological data representing three years (2015, 2016, and 2017) were used as predictors to train the Artificial Neural Network (ANN) while the data of the year 2018 were used to test it. The results showed good performance when forecasting SO2, O3, CO, and NO2, and acceptable performance when forecasting Particulate Matter (PM10) at the given 4 locations.
Źródło:
Journal of Ecological Engineering; 2021, 22, 6; 1-11
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Air Quality Assessment and Forecasting Using Neural Network Model
Autorzy:
Hamdan, Mohammad A.
Ata, Mohammad F. Bani
Sakhrieh, Ahmad H.
Powiązania:
https://bibliotekanauki.pl/articles/1838392.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
air pollutant
ANN
MATLAB
forecasting
Opis:
Air pollution is a major obstacle faced by all countries which impacts the environment, public health, socioeconomics, and agriculture. In this study, the air pollutants in the city of Amman were presented and analyzed. Nonlinear Autoregressive Exogenous (NARX) model was used to forecast the daily average levels of pollutants in Amman, Jordan. The model was built using the MATLAB software. The model utilized a Marquardt-Levenberg learning algorithm. Its performance was presented using different indices, R2 (Coefficient of Determination), R (Coefficient of Correlation), NMSE (Normalized Mean Square Error), and Plots representing network predictions vs original data. Historical measurements of air pollutants were obtained from 4 of the Ministry of Environment (MoEnv) air quality monitoring stations in Amman. The meteorological data representing three years (2015, 2016, and 2017) were used as predictors to train the Artificial Neural Network (ANN) while the data of the year 2018 were used to test it. The results showed good performance when forecasting SO2, O3, CO, and NO2, and acceptable performance when forecasting Particulate Matter (PM10) at the given 4 locations.
Źródło:
Journal of Ecological Engineering; 2021, 22, 6; 1-11
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical model development for non-point source in-stream pollutant transport
Autorzy:
Adu, Joy
Kumarasamy, Muthukrishna Vellaisamy
Powiązania:
https://bibliotekanauki.pl/articles/205003.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
non-point source pollution
hybrid cells in series
pollutant transport
instream flow
pollutant concentration
Opis:
Non-point source pollution is a primary cause for concern globally. Various models have been developed to tackle this situation with much emphasis placed on best management practices. This practice has, however, proven to be insufficient to solve the NPS pollution situation. Existing non-point source models are watershed- -based and complicated both in operation, parameter estimation and data requirements. A non-point source model is proposed using the concept of the Hybrid Cells in Series model. The model is a three-parameter model made up of three zones, which describes pure advection through time delay in a plug zone, with combined advection and dispersion occurring when the other two zones are considered as thoroughly mixed. The proposed model is tested using synthetic data and field data from the Snake River, Colorado, USA, obtained from literature. Simulations were performed at four sample points; two from the tracer injection point along the Snake River before a confluence and two further downstream after the confluence. A regression analysis was carried out to determine the model’s capability to simulate pollutant transport for the four sampling points. The coefficients of determination are 0.98, 0.94, 0.84 and 0.97 while the standard error for each reach is 2.28E-2, 2.70E-2, 2.32E-2 and 9.35E-3 respectively. The results show good agreement between the measured and the simulated data. The response of the C-t profiles produced by the proposed model for both synthetic and field data demonstrates its ability to effectively simulate pollutant transport in natural rivers subject to non-point source pollution.
Źródło:
Archives of Environmental Protection; 2020, 46, 2; 91-99
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of engine cooling fan configuration on the emission of pollutants by vehicle exhaust systems in chassis dynamometer tests
Autorzy:
Gis, W.
Żółtowski, A.
Taubert, S.
Powiązania:
https://bibliotekanauki.pl/articles/245551.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
pollutant emissions
environmental protection
Opis:
Reduction of pollutant emission by exhaust systems due to stricter limits has drastically increased the impact of previously ignored factors on the results of emission tests. One such factor is the cooling of the engine by the chassis dynamometer's external fan. Improper cooling can increase the temperature of the engine and the catalytic converter. Preliminary studies conducted by the Motor Transport Institute have confirmed that the configuration of the cooling fan influences exhaust system emissions. This article discusses the results of tests aimed at identifying the cause of changes in emission levels. To achieve this aim, emission levels were measured for various configurations of the chassis dynamometer (including both the fan speed and the distance from the front of the vehicle). During the tests, measurements were taken of temporary pollutant levels in the CVS and of the temperature of exhaust before and after the catalytic converter. The results confirmed the findings of preliminary tests. Increased exhaust emission levels were noted, though not, as anticipated, during the urban driving cycle, but rather during the final phase of the extra-urban driving cycle. Measurements were taken using a single-roller chassis dynamometer equipped with a cooling fan with a regulated fan speed specified by a second-degree curve.
Źródło:
Journal of KONES; 2011, 18, 3; 107-115
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The relationship between parasite community structure and level of bioaccumulation of pollutants within parasite environment
Autorzy:
Sebelova, S.
Dusek, L.
Machala, M.
Gelnar, M.
Jurajda, P.
Powiązania:
https://bibliotekanauki.pl/articles/839055.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
environment
bioaccumulation
community structure
pollutant
Źródło:
Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simplified mathematical model of conservative pollutant propagation in ground water stream including adsorption process
Autorzy:
Aniszewski, A.
Powiązania:
https://bibliotekanauki.pl/articles/241000.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
mathematical model
conservative pollutant propagation
passive pollutant propagation
one-dimensional flow
groundwater
adsorption process
aquiferous layer
Opis:
In the first part of this article, a mathematical model of conservative and passive pollutant propagation in one-dimensional flow of ground water (including advection and adsorption processes) has been presented. Basing on laboratory studies of pollution concentrations on a model for measuring adsorption and adopting the numerical solution for this mathematical model, adsorption parameters kI and n were also cal-culated (for non-linear function describing this process). In the second part, taking advantage of the calculated values of these parameters of adsorption, empirical re-lationships subjecting these adsorption parameters on both those characterising an aquiferous layer (competent diameter d10, spatial ground porosity p) and ground wa-ter flow (water level or pressure line slope of ground water) were worked out. At the same time, the values of pollutant concentration reductions as a result of adsorp-tion both from parameters characterising ground medium (competent diameter d10, spatial ground porosity p), ground water flow (pressure line slope I) and estimated adsorption parameters (k1, n) have also been worked out. At the end of this article basing on the empirical equations for adsorption parameter values, the calculated values of pollutant concentrations have also been calcu-lated and compared with the measured pollutant concentrations on a physical model.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2000, 47, 1-4; 3-26
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of Oil-Contaminated Soils Phytotoxicity During Bioremediation Activities
Autorzy:
Sivkov, Yuriy
Nikiforov, Artur
Powiązania:
https://bibliotekanauki.pl/articles/1839168.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
soil
pollutant
oil contamination
bioremediation
Secále cereále
Opis:
This work is devoted to studying the dynamics of changes in phytotoxicity of oil-contaminated meadow soils in the process of microbial bioremediation. The research was conducted under laboratory and field conditions. Winter rye (Secále cereále) was selected as the test object. In order to assess the degree of toxicity in the laboratory, the indicators of seed germination – germination rate and germination energy-were determined. In a field experiment, the ecological state of oil-contaminated soils was evaluated by the germination rate and the amount of aboveground plant biomass. The research results showed that the content of petroleum products significantly affected the percentage of germination of rye seeds. There are differences in the size of seedlings for different experimental schemes: in all tests, the average height of cleoptila on polluted soil was less than on unpolluted soil, but at the same time it varied for different experimental bioremediation schemes. The use of potassium humate and modified vermiculite as additives significantly reduced the toxicity of the oil-contaminated soil.
Źródło:
Journal of Ecological Engineering; 2021, 22, 3; 67-72
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Flora of toxic depots in selected industrial zones
Autorzy:
Petrik, P
Soudek, P.
Benesova, D.
Najmanova, P.
Najman, M.
Vanek, T.
Powiązania:
https://bibliotekanauki.pl/articles/56761.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
bioindication
organic pollutant
phytoremediation
environment pollutant
soil contamination
industrial area
polychlorinated biphenyl
heavy metal
flora
Opis:
Floristic composition in three industrial areas with soils contaminated by heavy metals (As, Cd, Cu, Hg, Pb, Zn) and organic pollutants (polychlorinated biphenyls) was studied. The content of Pb was only significantly correlated with the floristic composition and explained 13.8% of its variability considering spatial dependency of the sites. No correlation was found for PCBs. Altogether, 237 plant vascular species were found at three study sites (117, 133 and 105, respectively). The three study areas differed in their species composition represented by their own characteristic species. The gradient in the content of natives/non-natives, species number, prevailing life forms and indicator values for plant species investigated was revealed. Based on our results, for phytoremediation purposes we can select productive plant species with high biomass and ability to accumulate large amounts of heavy metals or organic compounds and surviving on soils with low mineral content.
Źródło:
Acta Societatis Botanicorum Poloniae; 2009, 78, 4; 327-334
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Na-P1 zeolite synthesis and its crystalline structure ripening through hydrothermal process using coal combustion by-products as substrates
Autorzy:
Kunecki, P.
Panek, R.
Wdowin, M.
Powiązania:
https://bibliotekanauki.pl/articles/184573.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
energy industry
environment pollutant
earth ecosystem
Opis:
Energy industry sector is one of the major environment pollutants. This branch also generates significant amounts of by-products such as slugs, slug-ash mixtures, ashes and microspheres, which can be very harmful for the earth ecosystems. Statistically the microspheres (MIC) constitute from 0.6% to 2.5% of the total amount of post combustion wastes. MIC occurs mainly in fly ashes (less often in slugs) as the smallest, hollow, spherical particles. MIC is composed mainly of crystalline and amorphous aluminosilicate phases. The combustion conditions have strong influence on MIC composition. Mineral and chemical composition of MIC is very similar to F type of fly ashes; consequently there is a possibility to use them as substrates for zeolite synthesis. Zeolites are minerals from microporous, aluminosilicate group (Szala et al. 2015). Among others, they are characterized by specific channels and chambers occurrence in their structure, which results in a number of important features like: ion exchange, sorption, molecular sieve or catalytic properties. This is the reason for wide use of zeolites in numerous industrial sectors (Ahmaruzzaman 2010). The aim of this study is a synthesis of Na-P1 zeolite at semi-technical scale by conversion of microspheres under hydrothermal conditions in an alkaline medium. This study involves also research of Na-P1 zeolite structure ripening in order to optimize the synthesis conditions. Microspheres from Stalowa Wola Power Plant (Poland) were used as a substrate. For the synthesis of Na-P1 phase the following conditions were applied: 90 dm 3 of water, 15 kg of microsphere, 11 kg of sodium hydroxide (3 mol/dm 3 ), temperature: 80°C, and reaction time up to 26 h (Franus et al. 2014). The zeolite conversion was performed on semi-technical scale installation (Wdowin et al. 2014). During the conversion, samples were collected from the reactor after 2, 4, 6, 10, 14, 26 hours. To investigate the influence of time for zeolitization process efficiency these samples were analyzed in terms of chemical and mineral composition, structural and textural properties. The main attention was paid to the evolution of the Na-P1 unit cell parameters observed as a function of time (calculations and models were performed for every sample). The phase’s composition was determined with powder X-ray diffraction (XRD) method using a PANalytical X’pert MPD diffractometer (with a PW 3050/60 goniometer), Cu lamp, and a graphite monochromator. The analysis was performed within the angle range of 5–65 2θ. PANalytical X’Pert Highscore software was used to process the diffraction data. The identification of mineral phases was based on the PDF-2 release 2010 database formalized by the ICD and IZA-SC Database of Zeolite Structures. The experimental calculations of the unit cell parameters were performed using UnitCell software. The spatial model of Na-P1 zeolite cell was prepared using Mercury 3.7 Windows software. The morphological forms and the chemical composition of the main mineral components were determined with scanning electron microscope (SEM) FEI Quanta 250 FEG equipped with the SE detector and a system of chemical composition analysis based on energy dispersive X-ray-EDS of EDAX company. N 2 adsorption-desorption measurements were carried out at 77 K using ASAP 2020 volumetric adsorption analyzer (Micromeritics). The specific surface areas (S BET ) of the samples were evaluated using the standard Brunauer–Emmett–Teller (BET) method for nitrogen adsorption data in the range of relative pressure p / p 0 from 0.06 to 0.3. The total pore volumes were estimated from single-point adsorption at a relative pressure of 0.98. XRD data indicates that main phases in microsphere are amorphous aluminosilicate glass, mullite and quartz. The obtained product is dominated by Na-P1 phase. Experimental calculations of cell parameters and fabricated models confirm crystallographic similarity to Na-P1 pattern. Noteworthy is the fact that the unit cell parameters depend on reaction time. Calculations indicate that the cell parameters (walls length: a , b , c and cell volume) increase with time towards to pattern values. This phenomenon may be interpreted as a ripening of crystalline structure. An in-depth look at this matter can lead to better estimation of synthesis conditions, which have a significant impact to the total cost of zeolites production – especially at a larger scale. SEM shows progressive dissolution (also as a function of time) of aluminosilicate glass in favor of crystallization of zeolite phase. EDS analysis confirms similarity of chemical composition of the obtained samples to a standard Na-P1 zeolite. Calculated textural properties indicate increase of S BET with the reaction time. Simultaneously, the average pore diameters decrease. The S BET of synthetized Na-P1 was 4.62 m 2 /g after 2 h but it increased to 47.92 m 2 /g after 26 h. This is an effect of growing contribution of zeolite phase in relation to the initial substrates in the sample during the reaction time. The experimental conditions allowed synthesizing Na-P1 zeolite from microsphere particles in the prototype installation. Zeolitization process strongly influences the textural properties by increasing S BET and improving pore structure. The microsphere from Stalowa Wola Power Plant is a promising material for the synthesis of Na-P1 zeolite in the prototype installation. Still, the reaction parameters should be reconsidered, basing on the obtained results, in order to reduce the cost of the zeolite production as much as possible. This is required before proceeding to the full technical production scale. To observe increase of zeolite amount in entirety synthesis batch (and to link it with cell behavior) the Rietveld analysis will be provided.
Źródło:
Geology, Geophysics and Environment; 2016, 42, 1; 90-91
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of a Wetland Constructed with Typha domingensis Pers., for the Recovery of Contaminated Water from Hospital Effluents
Autorzy:
Peralta, Inocencia
Cardozo, César
Nakayama, Héctor
Ávalos, Claudia
Benítez, Gilberto
Elkhalili, Ryad
Ayala, José
Arenas, Rossana
Samudio-Oggero, Antonio
Powiązania:
https://bibliotekanauki.pl/articles/2173364.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
bioremediation
Typha domingensis
effluent
pollutant
environment
Opis:
The objective of this research project was to evaluate the implementation of a phytoremediation system for the effluents generated by the National Cancer Institute (INCAN), Central Department, Paraguay to contribute to the management of the liquid waste that it generates. The system consisted of a set of three pools, in which were made up of floating Typha domingensis Pers plants, at an approximate density of 10 plants per m2, all the roots formed a filter, which was in direct contact with the effluent. The effluent was of continuous flow; the flows of entry and exit were regulated according to the generation of liquid waste by INCAN. There were 5 measurements made with an interval of 7 days for each measurement, at a point of entry and exit of the effluent, to determine the system. The parameters evaluated were: BOD5, COD, NTK, PT, pH, temperature, conductivity, turbidity, dissolved oxygen and fecal coliforms. The results showed a considerable reduction of the pollutants generated for all the parameters evaluated, obtaining an efficiency of 67.9 to 92.4% in the evaluated parameters, indicating that it is very feasible to implement this type of systems for phytodepuration of liquid waste.
Źródło:
Journal of Ecological Engineering; 2022, 23, 9; 136--145
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wplyw punktowych zrodel zanieczyszczen na stezenie form azotu w wodach studziennych
Autorzy:
Sadej, W
Przekwas, K
Powiązania:
https://bibliotekanauki.pl/articles/802335.pdf
Data publikacji:
2006
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
pryzmy
studnie
skladowanie
stezenie zanieczyszczen
zanieczyszczenia rolnicze
obornik
zanieczyszczenia punktowe
zwiazki azotowe
zanieczyszczenia wod
waste heap
well
waste disposal
pollutant concentration
agricultural pollutant
manure
point pollution
nitrogen compound
water pollutant
Opis:
Określono wpływ punktowych źródeł zanieczyszczeń na obciążenie wód studziennych azotem. Wody pobrano dwukrotnie jesienią i wiosną z 13 wytypowanych ujęć własnych na terenie wsi: Radzieje, Dłużec i Solanka województwa warmińsko-mazurskiego. Znamienny wpływ na zanieczyszczenie wód miała odległość pryzm obornikowych oraz głębokość studni. We wszystkich analizowanych wodach stwierdzono przewagę organicznej formy azotu nad mineralną. Dziewięć z trzynastu studni charakteryzowało się podwyższonymi wartościami oznaczonych form biogenu: NO₃⁻, NH₄⁺, NO₂⁻. Ponadto wykazano wyraźną sezonowość zmian stężeń oznaczonych parametrów. Wyższe wartości stwierdzono w wodach pozyskanych wiosną w porównaniu do wód poboru jesiennego. Istotny wpływ na jakość wód badanych ujęć miał stan techniczny studni oraz sposób gospodarowania w obrębie zagrody.
The aim of the present study was to determine the effect of point pollution sources on nitrogen concentrations in well water. Water samples were collected twice, in fall and in spring, at 13 selected water intake points in the villages Radzieje, Dłużec and Solanka, located in the Province of Warmia and Mazury. Water pollution was significantly affected by the distance from manure heaps and well depth. In all water samples organic nitrogen dominated over mineral nitrogen. Water in 9 out of 13 wells was characterized by elevated levels of biogenic forms: NO₃⁻, NH₄⁺, NO₂⁻. In addition, seasonal changes were observed in nitrogen concentrations. Higher values were recorded in water samples collected in spring, as compared with those collected in fall. The technical condition of wells and farm management methods had a considerable influence on water quality.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 2006, 513; 365-372
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of Input of Unintentionally Produced Persistent Organic Pollutants into the Air Basin of the Odessa Industrial-and-Urban Agglomeration
Autorzy:
Mykhailenko, Vladyslav І.
Safranov, Tamerlan А.
Powiązania:
https://bibliotekanauki.pl/articles/1955569.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
persistent organic pollutant
generation
pollution source
emission factor
Opis:
The environmental legislation in Ukraine is changing rapidly. These changes are related to the adaptation of Ukrainian laws to the requirements of the European Union. In this regard, the paper considers the unintentional production of Persistent Organic Pollutants (POPs) in the Odessa Industrial-and-Urban Agglomeration (next – Odessa agglomeration) in the context of new regulatory and legal requirements of Ukraine. In many countries around the world, the issue of pollution of environmental components by POPs has a large focus, because POPs pose a global threat to the environment and human health. The work aims to assess the main sources of unintentional production of POPs in the Odessa agglomeration during one year (2017), taking into account the new territorial features of the Odessa agglomeration. For the first time for Odessa agglomeration, the mass of POPs formed by main sources using the newest European methodological approach was calculated, sources of unintentional production of POPs on volumes of these substances were ranked, and their total mass of generation on the territory of Odessa agglomeration was calculated. The number of POPs molecules equivalent to 2,3,7,8-TСDD, which infiltrate into the air basin of the Odessa agglomeration, hence into the organisms of the agglomeration inhabitants, was calculated. The obtained results were compared with the allowable number per capita of the agglomeration, the relevant conclusions were drawn. Priority sources of unintentional production of POPs were identified, which allows taking appropriate preventive measures to reduce the scale of their generation.
Źródło:
Journal of Ecological Engineering; 2021, 22, 9; 21-31
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ warunków meteorologicznych na zanie-czyszczenie powietrza wielopierścieniowymi węglowodorami aromatycznymi zawartymi w pyle zawieszonym na terenie pozamiejskim
Impact of meteorological conditions on air pollution with polycyclic aromatic hydrocarbons associated with rural aerosol particles
Autorzy:
Skotak, K.
Prządka, Z.
Degórska, A.
Powiązania:
https://bibliotekanauki.pl/articles/236752.pdf
Data publikacji:
2014
Wydawca:
Polskie Zrzeszenie Inżynierów i Techników Sanitarnych
Tematy:
jakość powietrza
emisja zanieczyszczeń
rozprzestrzenianie zanieczyszczeń
zmienność sezonowa
air quality
air pollutant emission
pollutant dispersion
seasonal variability
Opis:
Wielopierścieniowe węglowodory aromatyczne (WWA) w Polsce emitowane są do atmosfery przede wszystkim z sektora komunalnego, transportu oraz przemysłu i energetyki. WWA znajdujące się w powietrzu atmosferycznym są przenoszone na dalekie odległości, a ich zawartość na danym obszarze zależy przede wszystkim od rozmiaru emisji i warunków meteorologicznych. W pracy dokonano oceny stopnia zanieczyszczenia powietrza pyłem i związanymi z nim WWA na obszarze pozamiejskim w regionie Polski północno-wschodniej (Puszcza Borecka). Analizie poddano wpływ warunków meteorologicznych na obserwowane ilości WWA w powietrzu atmosferycznym w latach 2008–2012, w ujęciu rocznym i sezonowym. Statystycznie istotne wyniki korelacji zawartości WWA w powietrzu z parametrami meteorologicznymi uzyskano w przypadku temperatury, natężenia całkowitego promieniowania słonecznego oraz usłonecznienia i parowania. Stwierdzono, że w ciepłym półroczu większy wpływ na zawartość WWA w powietrzu miała temperatura i wysokość opadów, zaś w chłodnym – natężenie promieniowania, usłonecznienie i parowanie.
In Poland, polycyclic aromatic hydrocarbons (PAHs) are emitted into the atmosphere mainly from the non-industrial fossil fuel combustion and energy production sector, transport and industry. PAHs in ambient air are transported over long distances and their concentration in a given area depends primarily on the emission size and local meteorological conditions. Our study assessed the level of air pollution with particle-associated PAHs in rural area in North-Eastern Poland (Puszcza Borecka). Impact of weather conditions on PAH concentrations in ambient air in the period from 2008 to 2012 was analyzed on annual and seasonal basis. Statistically significant correlation results between PAH concentrations and meteorological parameters were achieved for temperature, total solar radiation intensity, sunshine duration and evaporation. It was established that the temperature and precipitation level had stronger influence on PAH air content in the warm half year, while radiation intensity, sunshine duration and evaporation – in the cool half-year period.
Źródło:
Ochrona Środowiska; 2014, 36, 3; 55-63
1230-6169
Pojawia się w:
Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dose-and-time dependent effect of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) on progesterone secretion by porcine luteal cells cultured in vitro
Autorzy:
Gregoraszczuk, E.L.
Wojtowicz, A.K.
Zabielny, E.
Grochowalski, A.
Powiązania:
https://bibliotekanauki.pl/articles/70899.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Fizjologiczne
Tematy:
environment pollutant
2,3,7,8-tetrachlorodibenzo-p-dioxin
luteal cell
progesterone secretion
in vitro
toxic pollutant
Źródło:
Journal of Physiology and Pharmacology; 2000, 51, 1
0867-5910
Pojawia się w:
Journal of Physiology and Pharmacology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seasonal biodiversity of pathogenic fungi in farming air area. Case study
Sezonowa bioróżnorodność patogennych grzybów w otoczeniu ferm. Studium przypadku
Autorzy:
Plewa, K.
Lonc, E.
Powiązania:
https://bibliotekanauki.pl/articles/2143343.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
seasonal biodiversity
biodiversity
fungi
pathogenic fungi
farming air area
airborne fungi
bioaerosol
air pollutant
biological pollutant
poultry production
intensive production
Opis:
Poultry production proved to be a significant source of bioaerosols. The exposure to high concentration of microorganisms in the air can cause primarily irritations, infections, allergies, and toxic effects. The aim of the present study was to investigate the seasonal biodiversity of airborne fungi in the poultry house, in the surrounding area, as well as to estimate health risk. Seasonal investigations were conducted in the spring, summer, autumn and winter 2010 in the poultry house located near Wrocław in Lower Silesia (Poland). The air samples were collected with the use of a Merck MAS-100 onto nutrient Sabouraud agar and were incubated for 5 days at 26°C. Subsequently the colonyforming units (CFU) were determined. The identification of the isolated fungi was made in accordance with the standard procedures. In the summer and autumn when the weather conditions are most friendly for the spread and the development of numerous microorganisms, fungi were more abundant in the surrounding area than in early spring and winter, when both humidity and temperature were lower. The total of 26 species were analysed (10 in the poultry house and 17 in the surrounding areas). Among 12 fungal genera: Aspergillus, Penicilium, Alternaria, Exophiala, Mycelia sterilla, Fusarium, Cladosporium, Scopulariopsis, Chaetomium, Acremonium, Candida and Rhodotorula nearly everything occurred to be the potential respiratory allergens.
Źródło:
Wiadomości Parazytologiczne; 2011, 57, 2; 117-122
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zanieczyszczenia mineralne kaszy manny
Mineralnye zagrjaznenija mannojj kashi
Mineral contamination of semolina
Autorzy:
Hiszpanska, C.
Legatowa, B.
Powiązania:
https://bibliotekanauki.pl/articles/873111.pdf
Data publikacji:
1957
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
kasza manna
zanieczyszczenia ziarna
oznaczanie
zanieczyszczenia nieorganiczne
zanieczyszczenia mineralne
zanieczyszczenia metalowe
wymagania jakosciowe
norma PN-A-74016
semolina
grain contamination
determination
inorganic pollutant
mineral pollutant
metal pollutant
quality requirement
PN-A-74016 standard
Źródło:
Roczniki Państwowego Zakładu Higieny; 1957, 08, 4
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Air pollution and hydromorphological description of the river
Autorzy:
Cichowicz, Robert
Michalska, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/1178424.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
RHS
atmospheric air
hydromorphological status
pollutant emissions
Opis:
Hydromorphological assessment of surface water status not only takes into account biological and physicochemical components, but also structural characteristics of surface waters including among others: hydrological regime, river continuity and morphological conditions. It should be borne in mind that the quality of surface water is also influenced by atmospheric conditions and the type of pollution that occurs in the areas surrounding the catchment area. Because harmful substances can get into the tanks both as a result of precipitation that can absorb atmospheric pollutants and by leaching from neighboring areas of solid contaminants there. It is therefore important to conduct surface water analysis in conjunction with air quality monitoring.
Źródło:
World Scientific News; 2017, 73; 80-91
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Emisja zanieczyszczeń przy zasilaniu silnika ZS olejem napędowym z domieszką bioetanolu
Pollutant emissions of diesel engines powered by diesel fuel mixed with ethanol
Autorzy:
Matuszewska, Anna
Odziemkowska, Małgorzata
Czarnocka, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/470427.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Tematy:
bioethanol
biofuel
compression-ignition engine
pollutant emission
Opis:
Bioethanol is an oxygen compound added to gasoline. Research into the possibility of applying it to diesel oil are conducted. It is assumed that such fuel could help reduce the emission of gaseous and particulate matter in comparison with conventional fuels. This paper presents the results of the authors’ chassis dynamometer test for biofuel containing 15% bioethanol. Emissions of carbon monoxide (CO), nitrogen oxides (NOx), hydrocarbons (THC), and particulate matters (PM) were related to diesel oil emissions.
Źródło:
Studia Ecologiae et Bioethicae; 2013, 11, 2; 139-146
1733-1218
Pojawia się w:
Studia Ecologiae et Bioethicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Treatment of Surface Treatment Effluents by Electrocoagulation Process Using Aluminium Electrodes
Autorzy:
Namoussi, Soukaina
Merbouh, Chaimaa
Kabriti, Mohamed
Nahli, Abdelmottalib
Naamane, Ayoub
Chlaida, Mohamed
Iounes, Nadia
Powiązania:
https://bibliotekanauki.pl/articles/2025816.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
electrocoagulation
aluminium electrode
surface treatment
effluent
pollutant
Opis:
The surface treatment industry generates effluents with a high load of highly toxic chemicals which must be treated under increasingly stringent regulation. The aim of this study was to treat the effluents of surface treatment unit of an aeronautical industry by the electrocoagulation process using aluminium electrodes. This process is used to study the performance to remove colloidal load, significant amount of oxidizable material and high levels of various metal elements (Cr, Fe, Zn, Cu and Al) from these effluents, under optimum conditions of pH 7, 8.6A of current intensity and 60 min of application. The electrocoagulation process was found to be effective in reducing turbidity (97.12%), COD (97.5%), SS (97.84%) and conductivity (96.82%), hexavalent chromium (99.99%), Zn (96.82%), Cu (94.3%), Iron (99.9%), Al (91.96%). The treated effluent conformed to the Moroccan standards of surface treatment discharge.
Źródło:
Journal of Ecological Engineering; 2022, 23, 1; 91-99
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Technogenic Loading on the Surface Water Bodies of the Separate Regions of the North-Western Black Sea
Autorzy:
Chugai, Angelina
Safranov, Tamerlan
Powiązania:
https://bibliotekanauki.pl/articles/123925.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
quality assessment
pollutant
wastewater
technogenic loading module
Opis:
The assessment of surface water quality and technogenic loading on the separate regions of the North-Western Black Sea, namely the Mykolaiv region, was performed in this work. The water quality assessment was conducted using the graphical method that allows determining the suitability of water for the certain types of water using, as well as the method of calculating a water pollution combinatorial index. The estimation of the technogenic loading is based on calculating a technogenic loading module. It was found that the surface waters of the Mykolaiv region do not meet the requirements of fisheries in relation to most quality indicators. According to various standards, this surface water quality in this region is characterized by the “polluted” – “very dirty” categories. A reduction of the technogenic loading by the volume of wastewater discharges since 2006 can be determined. According to the pollutant discharge indicators, a steady decrease of the level of loading has been noted since 2005, which is caused by a reduction of wastewater discharges.
Źródło:
Journal of Ecological Engineering; 2020, 21, 5; 197-201
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Emerging POPs. A special session at 'Dioxin 2008' in Birmingham
Trwale zanieczyszczenia organiczne [POPs] pojawiajace sie w srodowisku przyrodniczym. Sesja specjalna podczas konferencji 'Dioxin 2008' w Birmingham
Autorzy:
Rose, M
Falandysz, J.
Powiązania:
https://bibliotekanauki.pl/articles/875048.pdf
Data publikacji:
2008
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
organic pollutant
environment pollutant
chlorinated flame-retardant
Birmingham
biocide
Dioxin 2008 conference
persistent organic pollutant
dioxin
symposium
environment contaminant
dioxin-like compound
brominated flame retardant
perfluorinated compound
food
Źródło:
Roczniki Państwowego Zakładu Higieny; 2008, 59, 4
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research of the pollutant emission from a city bus engine
Badania emisji zanieczyszczeń z silnika autobusu miejskiego
Autorzy:
Chłopek, Z.
Powiązania:
https://bibliotekanauki.pl/articles/949477.pdf
Data publikacji:
2008
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
silniki spalinowe
silniki autobusów miejskich
emisja zanieczyszczeń
testy emisji zanieczyszczeń
internal combustion engines
city bus engines
pollutant emission
pollutant emission tests
Opis:
Methods of test synthesis to research the internal combustion engines used in different, other then typical automobile vehicle applications are presented. Results of empiric research of pollutant emission from a self ignition engine in static and dynamic tests are analyzed. The conditions of the engine use are compatible with the homologation tests and work conditions of city bus engines. The need of the possibilities for the objective opinion of useful properties of internal-combustion engines requires the applications of the research methods respondent to the real levels of engines service. The static and dynamic tests, worked out by the author, were used to the research of pollutant emission from the city bus engine. The results of pollutant emission from the engine were sensibility on conditions of the engine use. On the base of performed investigations and from secured experiences in the hitherto existing works it is possible to formulate following conclusions: results of empirical research performed on the work conditions of the of internal-combustion engines during their real usage enable the synthesis of a priori research tests, simulating engine work conditions, therefore the causes of the processes describing engine properties. The emissions of pollution from the internal combustion engine are strongly susceptible on the work conditions of the engines, both static states and occurrence of dynamic states.
W pracy przedstawiono metody syntezy testów do badań właściwości silników spalinowych o specyficznych zastosowaniach różnych od zastosowań do napędu typowych pojazdów samochodowych. Przeanalizowano wyniki badań empirycznych emisji zanieczyszczeń z silnika o zapłonie samoczynnym w testach statycznych i dynamicznych, odpowiadających różnym warunkom użytkowania silnika. Warunki te dotyczą użytkowania silnika spalinowego do napędu samochodu zgodnie z testami homologacyjnymi oraz do napędu autobusu miejskiego. Potrzeba możliwości obiektywnej oceny użytkowych właściwości silników spalinowych wymaga stosowania metod badawczych odpowiadających rzeczywistym warunkom eksploatacji silników. Do badań emisji zanieczyszczeń w warunkach innych niż homologacyjne wykorzystano testy badawcze: statyczne i dynamiczne, wyznaczone przez autora dzięki badaniom empirycznym warunków pracy silnika spalinowego w czasie jego rzeczywistego użytkowania w autobusie miejskim. Wyniki badań emisji zanieczyszczeń z silnika spalinowego wykazały znaczną wrażliwość na warunki jego użytkowania. Na podstawie przeprowadzonych badań oraz doświadczeń zdobytych w dotychczasowych pracach można sformułować następujące wnioski: wyniki badań empirycznych, przeprowadzanych nad warunkami pracy silników spalinowych w czasie ich rzeczywistego użytkowania, umożliwiają syntezę apriorycznych testów badawczych, symulujących warunki pracy, a więc przyczyny procesów opisujących właściwości silników. Emisje zanieczyszczeń z silnika spalinowego są silnie wrażliwe na warunki pracy silników, zarówno stanów statycznych, jak i występowania stanów dynamicznych.
Źródło:
Journal of KONES; 2008, 15, 3; 67-74
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Models of the Impact of Road Transport in Air Quality Management System
Autorzy:
Królikowski, Jan
Wodzińska, Jagoda
Powiązania:
https://bibliotekanauki.pl/articles/503698.pdf
Data publikacji:
2013
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
environmental monitoring
air quality
pollutant dispersion models
road transportation
Opis:
The paper presents categorization of models used in environmental monitoring taking into account the factors of emissions into the air, and the impact of road transport emissions. The information collected was related to the share of road transport in the creation of the emission in the Lodz region, analyzed as a case study. Types of substances were classified according to their harmfulness and intensity derived from traffic sources. Particular attention has been given to the issue of dispersion models used in environmental monitoring, the practice of their use and suitability for road transport.
Źródło:
Logistics and Transport; 2013, 20, 4; 29-36
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-25 z 262

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