scholarly journals Fabrication of Solar Air Purification System

2020 ◽  
pp. 204-211
Author(s):  
Mohammed Iqbal Khatib ◽  
Shahin Shaikh ◽  
Mohammed Hisham Uddin ◽  
Mohammed Mazhar ◽  
Mohammed Zia ◽  
...  
Keyword(s):  
Air Pollution ◽  
Indoor Air Pollution ◽  
International Energy Agency ◽  
Transport Infrastructure ◽  
World Health ◽  
Air Purification ◽  
Energy Agency ◽  
Premature Deaths ◽  
Purification System ◽  
Health Organization

Air pollution occurs when harmful or excessive quantities of substances including gases, particles, and biological molecules are introduced into Earth's atmosphere. It may cause diseases, allergies and even death to humans; it may also cause harm to other living organisms such as animals and food crops, and may damage the natural or built environment. Both human activity and natural processes can generate air pollution. Indoor air pollution and poor urban air quality are listed as two of the world’s worst toxic pollution problems in the 2008 Blacksmith Institute World's Worst Polluted Places report. Outdoor air pollution alone causes 2. 1 to 4. 21 million premature deaths annually. According to the 2014 World Health Organization report, air pollution in 2012 caused the deaths of around 7 million people worldwide, an estimate roughly echoed by the International Energy Agency. Though government is taking several measures to control air pollution it is rising rapidly due to urbanization, excessive usage of automobiles, factories, construction works. , etc. , As we cannot deny the fact that development without transport, infrastructure and factories is not possible. We have to search for alternate means of air pollution reduction. However air purification / filtration requires lot of energy to drive induced air fans it is better to use solar energy rather than going for conventional thermal energy. As a part of our project dissertation we are planning to fabricate a solar air purification system for reduction of air pollution.

Decision Tree-Based Analytics for Reducing Air Pollution

2018 ◽  
Vol 17 (02) ◽  
pp. 1850015 ◽  
Author(s):  
Ajanta Das ◽  
Anindita Desarkar
Keyword(s):  
Air Pollution ◽  
Decision Tree ◽  
World Health ◽  
Pollution Level ◽  
Rule Base ◽  
Premature Deaths ◽  
Id3 Algorithm ◽  
Rule Sets ◽  
Term Basis ◽  
Health Organization

Air pollution indicates contaminated air which arises due to the effect of physical, biological or chemical alteration to the air in the atmosphere applicable both for indoors and outdoors. This situation arises when poisonous gases, dust or smoke enter into the atmosphere and make the surroundings vulnerable for any living beings as well as difficult for them to survive. Large numbers of premature deaths happen across the globe if exposed to these pollutants on a long-term basis as major portion of the cities have the pollution level above the threshold determined by World Health Organization (WHO). So appropriate measures need to be taken on a priority basis to reduce air pollution as well as save our planet. This paper proposes a novel air pollution reduction approach which collects source pollution data. After extraction of source data, it uses various databases (DBs) and then different decisions or classes are created. The decision tree was created with the help of Iterative Dichotomiser 3 (ID3) algorithm to implement the rule base appropriately depending on the air pollution level and a bunch of rule sets were derived from the decision tree further.

scholarly journals Indoor Air Quality, Information, and Socioeconomic Status: Evidence from Delhi

2021 ◽  
Vol 111 ◽  
pp. 420-424
Author(s):  
Michael Greenstone ◽  
Kenneth Lee ◽  
Harshil Sahai
Keyword(s):  
Air Pollution ◽  
Socioeconomic Status ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Indoor Air Pollution ◽  
World Health ◽  
Quality Information ◽  
Air Purifier ◽  
Health Organization

In Delhi, one of the world's most polluted cities, there is relatively little information on indoor air pollution and how it varies by socioeconomic status (SES). Using indoor air quality monitors (IAQMs), we find that winter levels of household air pollution exceed World Health Organization standards by more than 20 times in both high-and low-SES households. We then evaluate a field experiment that randomly assigned monthlong IAQM user trials across medium-and high-SES households but suffered from significant survey non-response. Among respondents, IAQMs did not affect take-up of subsidized air purifier rentals or other defensive behavior.

scholarly journals Academically Produced Air Pollution Sensors for Personal Exposure Assessment: The Canarin Project

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1876
Author(s):  
Boris Dessimond ◽  
Isabella Annesi-Maesano ◽  
Jean-Louis Pepin ◽  
Salim Srairi ◽  
Giovanni Pau
Keyword(s):  
Air Pollution ◽  
Medical Research ◽  
Personal Exposure ◽  
World Health ◽  
Contextual Data ◽  
Premature Deaths ◽  
Portable Sensors ◽  
Personal Exposure Assessment ◽  
Health Organization ◽  
Working And Living Conditions

The World Health Organization has estimated that air pollution is a major threat to health, causing approximately nine million premature deaths every year. Each individual has, over their lifetime, a unique exposure to air pollution through their habits, working and living conditions. Medical research requires dedicated tools to assess and understand individual exposure to air pollution in view of investigating its health effects. This paper presents portable sensors produced by the Canarin Project that provides accessible, real time personal exposure data to particulate matter. Our primary results demonstrate the use of portable sensors for the assessment of personal exposure to the different micro-environments attended by individuals, and for inspecting the short-term effects of air pollution through the example of sleep apnea. These findings underscore the necessity of obtaining contextual data in determining environmental exposure and give perspectives for the future of air pollution sensors dedicated to medical research.

scholarly journals Impacts of the COVID-19 Pandemic on Ambient Air Quality in China: Atox Quasi-difference-in-difference Approach

2021 ◽  
Author(s):  
Tuo ZHANG ◽  
Maogang Tang
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Human Activities ◽  
Ambient Air ◽  
World Health ◽  
Static And Dynamic Analysis ◽  
Premature Deaths ◽  
Novel Coronavirus ◽  
Health Organization ◽  
Pollution Emissions

Abstract The novel coronavirus pandemic (COVID-19) outbreak has provided a distinct opportunity to explore the mechanisms by which human activities affect air quality and pollution emissions. We conduct a quasi-difference-in-differences (DID) analysis of the impacts of lockdown measures on air pollution during the first wave of COVID-19 pandemic in China. Our study covers 367 cities from the beginning of the lockdown on January 23, 2020 until April 22, two weeks after the lockdown in epicenter was lifted. Static and dynamic analysis of the average treatment effects of treated effects is conducted for the air quality index (AQI) and six criteria pollutants. The results indicate that, first, on average, the AQI decreased by about 7%. However, it was still over the threshold of the World Health Organization (WHO). Second, we detect heterogeneous changes in the level of different pollutants, which suggests heterogeneous impacts of the lockdown on human activities: carbon monoxide (CO) had the biggest drop of about 30% and nitrogen dioxide (NO2) had the second-biggest drop of 20%. In contrast, ozone (O3) increased by 3.74% due to the improvement of visibility. We project that it would reduce the premature deaths related to air pollution by 150 thousand nationwide during the research period, which is much larger than the death due to COVID-19 infections. Third, air pollution rebounded immediately after the number of infections dropped, which indicates a swift recovery of human activities. This study provides insights for the implementation of environmental policies in China and other developing countries.JEL codes: Q51, Q52, Q53

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