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Wyszukujesz frazę "indoor air quality" wg kryterium: Wszystkie pola


Wyświetlanie 1-9 z 9
Tytuł:
Ocena mikrobiologiczna jakości powietrza w zakładach piekarniczych
The assessment of microbiological indoor air quality in bakeries
Autorzy:
Wołejko, E.
Kowaluk-Krupa, A.
Wydro, U.
Butarewicz, A.
Jabłońska-Trypuć, A.
Piekut, J.
Dec, D.
Łoboda, T.
Powiązania:
https://bibliotekanauki.pl/articles/399933.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
piekarnie
bakterie
grzyby
zanieczyszczenie powietrza
bacteria
fungi
indoor air quality
bakeries
Opis:
Celem niniejszej pracy była ocena stanu jakości mikrobiologicznej powietrza w zakładach piekarniczych zlokalizowanych na terenie województwa podlaskiego. Badania wykonano jesienią 2014 roku na terenie trzech zakładów piekarniczych. Próby powietrza pobierano metodą zderzeniową z użyciem próbnika powietrza MAS-100 (Merck, Niemcy). Mikrobiologiczne badania powietrza obejmowały oznaczenie ogólnej liczby bakterii psychrofilnych i mezofilnych, bakterii wskaźnikowych tj. bakterii z gatunku Pseudomonas fluorescens, gronkowców mannitolododatnich i manitoloujemnych oraz grzybów pleśniowych znajdujących się w powietrzu atmosferycznym. Zanieczyszczenie powietrza wewnętrznego w badanych piekarniach pod kątem mikrobiologicznym różniło się w zależności od rodzaju lokalizacji zakładu produkcyjnego. Stężenia występujących wewnątrz zakładów bakterii mezofilnych i Staphylococcus mannitolododatnich oraz mannitoloujemnych przekraczały wartości graniczne określone dla powietrza niezanieczyszczonego. Nie odnotowano natomiast w analizowanych piekarniach nadmiernego zanieczyszczania powietrza grzybami pleśniowymi. Najwyższą liczbę grzybów w powietrzu wykryto w piekarni 1, natomiast w pozostałych piekarniach ich liczba utrzymywała się na poziomie czystego powietrza atmosferycznego.
The aim of this study was to assess microbiological indoor air quality of selected bakeries located in the region of Podlasie. The microbiological studies were conducted in autumn in 2014 in three selected bakeries. Microbiological air counts were measured by impaction using an air sampler MAS-100 NT. The microbiological air studies, comprised the determination of the total number of psychrophilic and mesophilic bacteria, namely indicator bacteria such as: bacteria of the species Pseudomonas fluorescens, mannitol-positive and mannitol-negative Staphylococc, the total number of bacteria from the Enterobacteriaceae family and fungi found in atmospheric air. The results of the study of indoor air polluted with the analyzed groups of microorganisms differed depending on the type of test air and the location of the manufacturing plant. In the plants, the concentration of mesophilic bacteria and mannitol–positive and mannitol-negative Staphylococcus exceeded the limit values of unpolluted air, according to the Polish Standard recommendations.
Źródło:
Inżynieria Ekologiczna; 2016, 47; 182-188
2081-139X
2392-0629
Pojawia się w:
Inżynieria Ekologiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Case Study of the PM2.5 and PM10 Local Elimination Device – The Impact on Indoor Air Quality
Autorzy:
Szatyłowicz, Ewa
Siemiończyk, Emilia
Hawrylik, Eliza
Powiązania:
https://bibliotekanauki.pl/articles/24201765.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
air protection
air purification
particulate matter
PM2.5
PM10
Opis:
Due to its irritating, allergenic, toxic, pathogenic, and carcinogenic effects, suspended particulate matter (PM) seriously threatens human health. Therefore, it seems obvious to control the level of concentration of PM2.5 and PM10 particles and their reduction in the indoor environment such as homes, workplaces, or public utilities. In the following work, an attempt was made to determine the efficiency of a home air purifier based on the concentration of PM2.5 and PM10 particles at selected measurement points in a teaching room located in the building of the Bialystok University of Technology. The tests were carried out in March and in April 2021, using the DT-96 meter, which measured the concentration of PM2.5 and PM10 in the air. The study included the time and intensity of air purifier operation. In addition, reference was made to the concentration of PM2.5 and PM10 in outdoor air, which was measured at measuring stations in the city of Bialystok. The obtained test results made it possible to assess the initial state of air quality in the test room, as well as to determine the parameters affecting the best efficiency of the air purifier and to notice the dependencies in changes in the concentration of PM2.5 and PM10 between the indoor and outdoor environment.
Źródło:
Journal of Ecological Engineering; 2023, 24, 5; 32--39
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indoor Air Quality in a Selected Health Resort Facility: Analysis of PM10, PM2.5 and 222Rn Concentrations
Autorzy:
Merenda, Beata
Maciejewski, Piotr
Bezyk, Yaroslav
Sówka, Izabela
Powiązania:
https://bibliotekanauki.pl/articles/2202169.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
health resort
indoor air
particulate matter
PM
222Rn
Opis:
This paper discusses the importance of indoor air quality and indicates its relation with outdoor air quality in the area of spa treatment. Significant factors and sources causing indoor air pollution by particulate matter and radon are considered. Particular attention is drawn to specific functions of health resorts in spa treatment in the context of the importance of indoor and outdoor air for patients staying in the resorts. It is underlined the specificity of health resorts providing treatment for patients classified as the group most sensitive to air pollution, i.e. people with chronic respiratory diseases. The study comprised measurements of 24-h concentrations of PM10, PM2.5 and 10-minute instantaneous concentrations of radon-222 (222Rn) from February 5 to February 25, 2021 in a treatment room of one of the Polish spas located in Lower Silesia. The analysis of interactions between the concentrations of two fractions of particulates PM10 and PM2.5 was presented. The interaction and dependence of factors affecting the elevated values of concentrations of the studied pollutants were discussed. The presented analyses showed that the concentrations of the studied pollutants were influenced by air exchange and air infiltration from outside to inside. In the case of short-term measurements of 222Rn activity concentration in the air, it was found that the observed changes in hourly concentrations of 222Rn are analogous to those observed in residential buildings. For the specific time intervals, the variation of PM concentrations and 222Rn activity concentration was found to be similar.
Źródło:
Journal of Ecological Engineering; 2022, 23, 10; 202--215
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Photodegradation of Lower Polybrominated Diphenyl Ether Congeners in Indoor Air – Model Studies
Autorzy:
Staszowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/124336.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
PBDEs
indoor air quality
flame retardants
photolytic degradation
Opis:
Polybrominated diphenyl ethers (PBDEs) are additive flame retardants which have found applications in polymers for many consumer plastic and electronic goods. Wide use of these chemicals has led to their extremely high concentrations in the indor environments. This paper presents an exploratory study of the photodebromination of five individual lower polybrominated diphenyl ether congeners (BDE-28, BDE-47, BDE-99, BDE-100 and BDE-101) irradiated with white light and different UV (A, B, C) light ranges. The capability of photodegradation of lower PBDEs under room lights was proven by the debromination which occurred with various effectiveness for the selected PBDE congeners and depended of light source. Almost all PBDE congeners showed the greatest decay when exposed to UV-C, with the exception of BDE-100. The decay of irradiated congeners occurred rapidly during the first 5 min of experiment. The final degradation varied from 38% decay (BDE-28, UV-C) to 94% (BDE-47, UV-C). These findings can help in predicting PBDE behavior in indoors and also be useful in the design of PBDE remediation processes.
Źródło:
Journal of Ecological Engineering; 2017, 18, 3; 180-186
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badanie parametrów powietrza w kotłowni opalanej różnymi rodzajami paliwa
Parameters of air fired boiler fed with different types of fuel
Autorzy:
Gładyszewska-Fiedoruk, K.
Rybałtowska, N.
Powiązania:
https://bibliotekanauki.pl/articles/400633.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
jakość powietrza wewnętrznego
tlenek węgla
dwutlenek węgla
kotłownia
indoor air quality
carbon monoxide
carbon dioxide
boiler
Opis:
W pracy podjęto próbę analizy wyników z przeprowadzonych pomiarów CO i CO2 w kotłowniach przydomowych. Przedstawiono stężenie spalin w trakcie energetycznego wykorzystania różnych rodzajów paliwa (olej opałowy lekki, pellet drzewny, ekogroszek, drewno brzozowe z węglem). Dało to możliwość oszacowania, które z badanych paliw daje najwyższą jakość powietrza w kotłowni podczas jego spalania, a tym samym najniższe stężenia badanych parametrów. Dodatkowo pozwoliło to dowieść, które paliwo w jakich warunkach spala się całkowicie i zupełnie, co oznacza, że wszystkie składniki paliwa uległy spaleniu do postaci ostatecznej i w spalinach nie ma już palnych cząstek. Analiza kosztów pozwoliła sprawdzić, jaki nośnik energii będzie najkorzystniejszy pod względem finansowym.
The measurement and interpretation of indoor carbon dioxide CO2 concentration can provide information on building indoor air quality and ventilation. On the other hand, concentration of carbon monoxide CO can show as how combustion process run and if the boiler is safe. When there is not sufficient air available to complete the combustion process, some of the fuel is left unburned, resulting in inefficiency and undesirable emissions. An examination of the CO2 and CO concentration in boiler and interpretation results help to improve indoor air quality. The paper presents characteristics of concentration CO2 and CO depend on used fuel in tested boiler rooms. The concentration curves show how each fuel combustion affect the amount of CO2 and CO that is produced.
Źródło:
Inżynieria Ekologiczna; 2016, 49; 202-207
2081-139X
2392-0629
Pojawia się w:
Inżynieria Ekologiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Air Filtration and Sterilization in Ventilation Systems According to the New Paradigm
Autorzy:
Cepiński, Wojciech
Szałański, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/2202141.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
pathogen
filtration
ventilation
indoor air pollution
indoor air quality
COVID-19
SARS-CoV-2
air handling unit
Opis:
The paper deals with the subject of increasing the efficiency of air purification in ventilation systems in situations of unusual hazardous indoor air pollutants. It analyzes possible locations of additional filtering and sterilizing elements in the installation to eliminate their return to the rooms. The quantities of pollutants in particular parts of the system were determined for a given fan configuration in the air handling unit and a possible leakage in the heat recovery system. Guidelines were proposed for the design and construction of systems to enable rapid modification of systems in the event of unusual contamination or pathogens in the indoor air.
Źródło:
Journal of Ecological Engineering; 2022, 23, 10; 25--34
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CFD Analysis of an Innovative Wind Tower Design with Wind-Inducing Natural Ventilation Technique for Arid Climatic Conditions
Autorzy:
Obeidat, Bushra
Kamal, Hammam
Almalkawi, Amal
Powiązania:
https://bibliotekanauki.pl/articles/1839069.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
wind tower
computational fluid dynamics
natural ventilation
wind pressure fluctuation
indoor air quality
passive ventilation system
Opis:
Wind towers are passive architectural elements traditionally used to ventilate buildings in the Middle East’s hot and arid regions. Some recent design initiatives in Jordan are particularly interested in using passive systems for natural ventilation. This paper focuses on an innovative wind tower design as a passive ventilation system, which will be integrated into a train station design in Aqaba, Jordan to improve the air quality in indoor spaces and reduce the cooling loads. The design uses wind-induced effects as the motivating forces to improve natural ventilation. The study optimized the wind tower and evaluated its performance using Autodesk Computational Fluid Dynamics (CFD) simulations and Grasshopper Rhino plug-ins. Airflow and distribution through the tower were analyzed using the CFD model. Grasshopper definitions were used to examine the tower efficiency in lowering the indoor air temperature. Simulations indicated the potential of the proposed wind tower to reduce the temperature by 6.164°C and supply the interior space with the required fresh air rates. This article outlines how wind towers can be used in contemporary architecture and incorporate the simulation methods to pave the way for architects to effectively validate the performance of their design proposals at the early design stage.
Źródło:
Journal of Ecological Engineering; 2021, 22, 2; 86-97
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indoor and Outdoor Concentrations of Particulate Matter and Gaseous Pollutants on Different Floors of a University Building: A Case Study
Autorzy:
Cichowicz, Robert
Dobrzański, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/1839306.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
air quality monitoring
VOCs
H2S
PM10
PM2.5
indoor air quality
outdoor air quality
Opis:
In this study, we investigate the changes in the concentrations of suspended particulate matter (PM10 and PM2.5) and selected gaseous pollutants (VOCs, H2S) in the atmospheric air inside and outside a 9-story building, which is intended primarily for the teaching activities. The purpose was to determine whether the air quality inside the building is directly dependent on the outside air quality. The analysis also included the influence of the height of the building, its location and environment, as well as meteorological conditions. No clear correlation was found between the measured parameters inside and outside the building. The height above ground (the floor on which the measurements were made) was found to have a significant influence on the concentration of each pollutant. Wind direction was also found to have a very important impact on the air quality inside the building. A strong relationship was observed on the leeward side between the concentration of impurities on the inside and outside of the building.
Źródło:
Journal of Ecological Engineering; 2021, 22, 1; 162-173
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microbiological Quality of Indoor and Outdoor Air in a Municipal Wastewater Treatment Plant – A Case Study
Autorzy:
Staszowska, Amelia
Powiązania:
https://bibliotekanauki.pl/articles/2027817.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
microbial air quality
wastewater treatment plant
bioaerosol
Opis:
Wastewater treatment plants (WWTPs) have been recognized as a source of odors and microbial pathogens to the outdoor air. The results of many studies revealed that high amounts of microorganisms are not only present in the stream of wastewater or sludges but also in the bioaerosols that are generated during the different stages of the wastewater treatment. Hence, possible migration of biological contaminants into the interiors cannot be excluded. However, there is a knowledge gap in an assessment of the microbiological indoor air quality of the facilities located at WWTPs. The aim of this study was to evaluate the level of outdoor microbial air contamination upon the indoor environment based on the determined outdoor to indoor (O/I) ratios. The sampling of airborne bacteria and fungi was conducted in three replications with the sedimentation and impaction method, during a one-year survey in ten technological and office buildings as well as their vicinity, at the municipal wastewater treatment plant of Lublin (Poland). Moreover, the cleanliness of hand contact surfaces in staff rooms was examined (Rodac plates). Additionally, API identification of bacteria and fungi was carried out. The highest concentration of total bacteria count (3617 CFU/$m^3$) and fungi in bioaerosols (5386 CFU/$m^3$) was detected in the air around the sewage pumping station, close to the aeration tanks. P. fluorescens was found in the air around the grit chamber (78 CFU/$m^3$). The majority of the examined indoor air samples were characterized with different levels of microbiological contamination – from non-polluted to moderately polluted. The number of total bacteria counts ranged from 180 to 4679 CFU/$m^3$. The highest estimated indoor fungi concentration was 4022 CFU/$m^3$. The controlled surfaces were mostly contaminated with the Actinomycetes and Coliform bacteria. No Salmonella sp. were detected. The bacteria from the Enetrobacteriaceae family were commonly isolated from the indoor and outdoor air samples. The obtained data can be used to devise further guidelines facilitating control and management of WWTP to avoid or minimize the staff exposure.
Źródło:
Journal of Ecological Engineering; 2022, 23, 2; 185-190
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-9 z 9

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