Air purifier – individual protection against indoor particulate matter

2020 ◽  
Vol 10 (1) ◽  
pp. 13-19
Author(s):  
Marek Chyc
Keyword(s):  
Particulate Matter ◽  
High Efficiency ◽  
Research Work ◽  
Residential Building ◽  
Local Market ◽  
Equipment Operation ◽  
Suspended Particulates ◽  
Total Suspended Particulates ◽  
Air Purifier ◽  
Indoor Particulate Matter

The research work presents the findings of testing air purified using two commercial air purifiers available on the local market. Tests were carried out in the office and bedroom of a residential building. The results obtained show a high (75–93%) yield of air purification from particulate matter. Particulate matters fractions such as: PM1, PM2.5, PM4.0, PM10 and total suspended particulates (TSP) were analysed by means professional dust meter. A very strong correlation of particulate matter (PM) contents were found in individual particle classes during equipment operation. Obtained results approve high efficiency of equipment operation in the total range of measured values. This study is one of the first in the topic of assessing the effectiveness of PM purification, taking into account various dust fractions. This study should be useful for individual customers and for public utilities during purchase decisions.

scholarly journals Analysis of concentration levels of particulate matter (PM10, total suspended particulates and black smoke) in the city of Zrenjanin

2010 ◽  
Vol 64 (5) ◽  
pp. 453-458 ◽  
Author(s):  
Bogdana Vujic ◽  
Dusan Milovanovic ◽  
Dejan Ubavin
Keyword(s):  
Particulate Matter ◽  
Air Quality ◽  
Geographical Location ◽  
Quality Monitoring ◽  
Air Quality Monitoring ◽  
Suspended Particulates ◽  
Black Smoke ◽  
Total Suspended Particulates ◽  
The City ◽  
Concentration Levels

Air quality monitoring on the territory of AP Vojvodina was initiated in mid 90s. During the last decade of the 20th century the development of the air quality monitoring in Serbia didn?t keep up with the pace of the other countries in the region due to political isolation and severe economic crisis. Monitoring of the particular pollutants was conducted unsystematically and sporadically. Data presented in this paper were obtained on the territory of the city of Zrenjanin, which represents typical agglomeration in the region in regard to its geographical location, population, level of industry development and the presence of natural gas as energy product in the remote and domestic heating system of residential objects. Available data on the concentration levels of PM10 (particulate matter with aerodynamic diameter less than 10 ?m), TSP (total suspended particulates) and BS (black smoke) during the period of 2005-2007 (three cold and three warm seasons) have been used in this work in order to carry out analysis and comparison of the daily concentration levels of PM10, TSP and BS and their seasonal variation.

The Intergovernmental Fiscal Effects of the Clean Air Act

2011 ◽  
Vol 39 (6) ◽  
pp. 810-830 ◽  
Author(s):  
Douglas A. Carr
Keyword(s):  
United States ◽  
Particulate Matter ◽  
Sulfur Dioxide ◽  
Local Governments ◽  
Property Tax ◽  
Clean Air Act ◽  
Suspended Particulates ◽  
Total Suspended Particulates ◽  
Criteria Pollutants ◽  
Clean Air

The impacts of air quality regulations under the Clean Air Act extend beyond directly regulated polluting industries; these regulations also affect the tax bases of local governments. To assess the local fiscal effects of nonattainment regulations under the Clean Air Act, this article analyzes revenue data spanning twenty years for counties throughout the entire United States. Attainment status for ozone, total suspended particulates (TSP), particulate matter smaller than 10 μm (PM10), and sulfur dioxide (SO2) is found to affect local governments' own source or property tax revenues. Nonattainment for these criteria pollutants results in regulations focusing on local industries. These findings indicate declining revenues in ozone, TSP, and PM10 nonattainment areas and suggest suppression of growth during the nonattainment period for SO2.

scholarly journals Retrofitting existing buildings to control indoor PM2.5 concentration on smog days: Initial experience of residential buildings in China

2017 ◽  
Vol 39 (3) ◽  
pp. 263-283 ◽  
Author(s):  
Yiyi Chu ◽  
Peng Xu ◽  
Zhiwei Yang ◽  
Weilin Li
Keyword(s):  
Particulate Matter ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Control Method ◽  
Control Strategies ◽  
Residential Building ◽  
Existing Buildings ◽  
Indoor Particulate Matter ◽  
Particulate Matter 2.5

Severe smog days in many parts of developing countries, such as China and India, have drawn worldwide attention. This study aims at integrating various building retrofitting methods of existing buildings to control indoor particulate matter 2.5 concentrations. Methods are such as airtightness improvement, room pressure control, recycling air filtration and combinations of the above. The study verifies the effectiveness of each control method to reduce the indoor particulate matter 2.5 concentration below 25 µg/m3 under certain outdoor conditions in building. Measurements and modelling are conducted for different outdoor particle concentration scenarios under different control strategies at an apartment in Shanghai, China. Overall, the retrofitting methods depend on outdoor smog circumstances and building structures. Therefore, it would be wise to choose appropriate control method depending on outdoor particulate matter 2.5 concentrations. This is the first time that various existing residential building retrofitting strategies are integrated jointly and the combination of different control methods are tested to ensure indoor air quality under different outdoor conditions. To validate the generality of these control strategies, a simulation model is developed and calibrated against experimental data under different scenarios. The variation of the indoor particulate matter 2.5 concentration in an extremely bad day is simulated and the influencing factors including infiltration air change rate, air volume and filter efficiency are all analyzed according to the model. The results and conclusions of this study can be used in many parts of the worlds, when building occupants have to choose proper equipment or retrofitting methods to control their indoor air quality. Practical application: The building retrofitting methods introduced in this article could be used in any residential building to control indoor particulate matter 2.5 concentrations continuously below 25 µg/m3 under different outdoor conditions.

Particulate matter < 10 μm (PM10) and total suspended particulates (TSP) in urban, rural and alpine air in Switzerland

1995 ◽  
Vol 29 (19) ◽  
pp. 2565-2573 ◽  
Author(s):  
Ch. Monn ◽  
O. Braendli ◽  
G. Schaeppi ◽  
Ch. Schindler ◽  
U. Ackermann-Liebrich ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Suspended Particulates ◽  
Total Suspended Particulates ◽  
Urban Rural

Piezoelectric β-polymorph formation of new textiles by surface modification with coating process based on interfacial interaction on the conformational variation of poly (vinylidene fluoride) (PVDF) chains

2020 ◽  
Vol 91 (3) ◽  
pp. 31301
Author(s):  
Nabil Chakhchaoui ◽  
Rida Farhan ◽  
Meriem Boutaldat ◽  
Marwane Rouway ◽  
Adil Eddiai ◽  
...  
Keyword(s):  
High Efficiency ◽  
Vinylidene Fluoride ◽  
Research Work ◽  
Research Area ◽  
Interfacial Interaction ◽  
Tetraethyl Orthosilicate ◽  
Poly Vinylidene Fluoride ◽  
Carbon Nanofillers ◽  
The Impact ◽  
Advanced Applications

Novel textiles have received a lot of attention from researchers in the last decade due to some of their unique features. The introduction of intelligent materials into textile structures offers an opportunity to develop multifunctional textiles, such as sensing, reacting, conducting electricity and performing energy conversion operations. In this research work nanocomposite-based highly piezoelectric and electroactive β-phase new textile has been developed using the pad-dry-cure method. The deposition of poly (vinylidene fluoride) (PVDF) − carbon nanofillers (CNF) − tetraethyl orthosilicate (TEOS), Si(OCH2CH3)4 was acquired on a treated textile substrate using coating technique followed by evaporation to transform the passive (non-functional) textile into a dynamic textile with an enhanced piezoelectric β-phase. The aim of the study is the investigation of the impact the coating of textile via piezoelectric nanocomposites based PVDF-CNF (by optimizing piezoelectric crystalline phase). The chemical composition of CT/PVDF-CNC-TEOS textile was detected by qualitative elemental analysis (SEM/EDX). The added of 0.5% of CNF during the process provides material textiles with a piezoelectric β-phase of up to 50% has been measured by FTIR experiments. These results indicated that CNF has high efficiency in transforming the phase α introduced in the unloaded PVDF, to the β-phase in the case of nanocomposites. Consequently, this fabricated new textile exhibits glorious piezoelectric β-phase even with relatively low coating content of PVDF-CNF-TEOS. The study demonstrates that the pad-dry-cure method can potentially be used for the development of piezoelectric nanocomposite-coated wearable new textiles for sensors and energy harvesting applications. We believe that our study may inspire the research area for future advanced applications.

scholarly journals A Study on Indoor Particulate Matter Variation in Time Based on Count and Sizes and in Relation to Meteorological Conditions

2021 ◽  
Vol 13 (15) ◽  
pp. 8263
Author(s):  
Marius Bodor
Keyword(s):  
Particulate Matter ◽  
Meteorological Data ◽  
Monitoring Network ◽  
Pollution Monitoring ◽  
Quality Monitoring ◽  
Air Quality Monitoring ◽  
Indoor Location ◽  
Particle Matter ◽  
Indoor Particulate Matter

An important aspect of air pollution analysis consists of the varied presence of particulate matter in analyzed air samples. In this respect, the present work aims to present a case study regarding the evolution in time of quantified particulate matter of different sizes. This study is based on data acquisitioned in an indoor location, already used in a former particulate matter-related article; thus, it can be considered as a continuation of that study, with the general aim to demonstrate the necessity to expand the existing network for pollution monitoring. Besides particle matter quantification, a correlation of the obtained results is also presented against meteorological data acquisitioned by the National Air Quality Monitoring Network. The transformation of quantified PM data in mass per volume and a comparison with other results are also addressed.

Indoor particulate matter and blood heavy metals in housewives: a repeated measured study

2021 ◽  
pp. 111013
Author(s):  
Dong-Wook Lee ◽  
Jongmin Oh ◽  
Shinhee Ye ◽  
Youngrin Kwag ◽  
Wonho Yang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Particulate Matter ◽  
Indoor Particulate Matter
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