{"id":32551,"date":"2024-11-22T17:37:25","date_gmt":"2024-11-22T12:07:25","guid":{"rendered":"https:\/\/www.nextias.com\/ca\/?p=32551"},"modified":"2024-11-22T17:37:26","modified_gmt":"2024-11-22T12:07:26","slug":"indoor-air-quality-and-purification","status":"publish","type":"post","link":"https:\/\/www.nextias.com\/ca\/current-affairs\/22-11-2024\/indoor-air-quality-and-purification","title":{"rendered":"Indoor air quality and Purification"},"content":{"rendered":"\n<p><strong>Syllabus: GS3\/Air Pollution<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Context<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In most of North India, PM2.5 levels exceed the World Health Organization\u2019s safe limits almost year-round, <strong>making indoor air quality management essential.<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Indoor Air Pollution<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Indoor air pollution refers to the presence of harmful substances or pollutants in the air inside buildings and homes, which can pose health risks to the people.<\/li>\n\n\n\n<li>These pollutants can accumulate to harmful levels if proper ventilation or air filtration systems are not in place.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Common Sources of Indoor Air Pollution:<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Household Products:<\/strong> Cleaning agents, paints, and air fresheners can release chemicals like volatile organic compounds (VOCs) into the air.<\/li>\n\n\n\n<li><strong>Tobacco Smoke:<\/strong> Cigarette smoke is a significant indoor air pollutant.<\/li>\n\n\n\n<li><strong>Cooking:<\/strong> Stoves, particularly gas stoves, release nitrogen dioxide and particulate matter.<\/li>\n\n\n\n<li><strong>Dust and Pollen:<\/strong> Accumulated dust and outdoor pollen can worsen respiratory conditions and allergies.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Impacts\u00a0 :<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Indoor air pollution<\/strong> is a big problem in developing countries, where people often burn wood, coal, dung, or other solid fuels indoors for cooking and heating.\n<ul class=\"wp-block-list\">\n<li>Burning these materials releases harmful pollutants into the air, including fine particulate matter, <strong>carbon monoxide, and various other toxins.<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>It leads to <strong>noncommunicable diseases<\/strong> including stroke, ischaemic heart disease, chronic obstructive pulmonary disease (COPD) and lung cancer.<\/li>\n\n\n\n<li>Women and children, typically responsible for household chores such as cooking and collecting firewood, bear the greatest health burden from the use of polluting fuels and technologies in homes.<\/li>\n\n\n\n<li>Around 4.2 million people die prematurely due to indoor air pollution, according to the World Health Organization.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Measures\u00a0<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Improving indoor air quality starts with <strong>managing exposure to PM2.5<\/strong>, the primary pollutant of concern which is linked to respiratory diseases, cardiovascular conditions, and neurological disorders.<\/li>\n\n\n\n<li>The first step is to<strong> limit the entry of outdoor pollutants.<\/strong>\n<ul class=\"wp-block-list\">\n<li>Keeping windows and doors closed prevents polluted air from seeping inside, while sealing gaps around windows, doors, and vents reduces air leaks.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Indoor Plants: <\/strong>Indoor plants help purify the air by absorbing contaminants and releasing oxygen.<\/li>\n\n\n\n<li><strong>Using an air purifier<\/strong>, especially in spaces like bedrooms where significant time is spent, is key to reducing exposure.\u00a0<\/li>\n\n\n\n<li><strong>Limiting the volume of air<\/strong> the purifier needs to clean \u2014 by closing doors to other rooms \u2014 further <strong>enhances efficiency.<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Importance of Air Purifiers<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>An air purifier is essentially a fan paired with a <strong>HEPA (High Efficiency Particulate Air) filter<\/strong>, designed to <strong>trap fine particulate matter like PM2.5.<\/strong>\u00a0<\/li>\n\n\n\n<li>Many modern purifiers come with sensors that<strong> automatically adjust <\/strong>fan speed based on air quality, improving efficiency.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Limitations of Air Purifiers:<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Effectiveness : <\/strong>Outdoor air purifiers (smog towers) are ineffective due to the vast volume of outdoor air.\n<ul class=\"wp-block-list\">\n<li>Indoor purifiers are less effective in homes with poor sealing where outdoor pollutants easily infiltrate.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Ethical Issues :\u00a0 <\/strong>Air purifiers are inequitable solutions, benefiting only those who can afford them.\n<ul class=\"wp-block-list\">\n<li>These individual measures address symptoms, not root causes, and risk exacerbating existing inequalities.<\/li>\n\n\n\n<li>Long-term solutions require improving outdoor air quality, not just individual mitigation efforts.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclusion\u00a0<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>As technology continues to evolve, new and more effective solutions for controlling indoor air pollution are emerging.\u00a0<\/li>\n\n\n\n<li>Additionally, compact and more efficient air quality sensors can now be installed in homes to continuously monitor pollutant levels and provide alerts when air quality deteriorates.<\/li>\n\n\n\n<li>Nanotechnology is another promising area for future innovation.\u00a0<\/li>\n<\/ul>\n\n\n\n<p><strong>Source: <\/strong><a href=\"https:\/\/indianexpress.com\/article\/explained\/explained-climate\/expert-explains-what-to-know-about-indoor-air-quality-and-purification-9680573\/\" target=\"_blank\" rel=\"noopener\"><strong>IE<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In most of North India, PM2.5 levels exceed the World Health Organization\u2019s safe limits almost year-round, making indoor air quality management essential.<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21],"tags":[],"class_list":["post-32551","post","type-post","status-publish","format-standard","hentry","category-current-affairs"],"acf":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/32551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/comments?post=32551"}],"version-history":[{"count":1,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/32551\/revisions"}],"predecessor-version":[{"id":32552,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/32551\/revisions\/32552"}],"wp:attachment":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/media?parent=32551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/categories?post=32551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/tags?post=32551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}