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Pollution PPT | 30+ Best Pollution PPT Collection Download Free

Pollution ppt.

• Air Pollution PPT
• Water Pollution PPT
• Environmental Pollution PPT
• Marine Pollution PPT
• Thermal Pollution PPT
• Types of Pollution PPT
• Land Pollution PPT
• Plastic Pollution PPT
• Control of Air pollution PPT
• Air prevention and control of Pollution act 1981 PPT
• Industrial Pollution PPT
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• Groundwater pollution PPT
• Types of air pollution PPT
• Air pollution case study PPT

Noise Pollution PPT

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• Causes of Water Pollution PPT
• Indoor Air Pollution PPT
• Light Pollution PPT
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• Noise Pollution Act of 2000 PPT
• Visual Pollution PPT
• Air Quality PPT
• Effects of water pollution on human health PPT
• Soil Pollution PPT
• Oil Pollution PPT
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Pollution PPT

• DEFINITION OF POLLUTION
• Types of Pollution
• Air Pollution
• Water Pollution
• Noise Pollution
• Land Pollution
• Radio Active Pollution
• thermal pollution
• What is Atmosphere
• Pollution In Facts and Figures
• Pollution Control Measures
• The PPC Division
• Enforcement Mechanisms
• Causes of air pollution
• Effects of air pollution
• How to avoid air pollution
• Definition and causes and effects of water pollution
• Water pollution pictures
• How to avoid water pollution
• Noise pollution (causes, effects, and prevention)
• How to avoid noise pollution
• Definition, causes, and prevention of land pollution
• Land pollution pictures

Air pollution PPT

• What is air
• List of major air pollutants
• Sources and effects of air pollutants
• What is air pollutants?
• Six major air pollutants
• Major sources of pollutants
• Greenhouse gases
• What is air pollution
• Wildlife affected by air pollution
• Ozone layer
• Greenhouse effect
• Global warming
• Air problems caused by incineration of waste materials
• Controlling air pollution

Water pollution PPT

• Human and natural pollutants
• Sources of water pollution
• How do we measure water quality?
• Quantitative water quality tests
• Qualitative water tests
• What are some indicator species of water pollution 
• Is the water safe to drink?
• What have developed countries done to  reduce stream pollution
• What have developed countries done to reduce stream pollution
• Who reports on drinking water
• Clean water act 1972
• Safe water drinking act 1974
• Water purification
• What is water pollution?
• Types of water pollution
• Causes of water pollution
• Effects of water pollution
• What you can do
• Classification of water pollutant
• Common water-borne diseases

Water act 1974 PPT

• Introduction
• Salient provisions of water act (1974) 
• Objectives & scope
• Powers and functions of boards
• Prevention and control of water pollution
• Penalties and procedure
• Miscellaneous
• Application and commencement
• Functions of the central board (sec. 16)
• Functions of the state board
• Ganga action plan ( gap)
• Water quality board actions

Environmental pollution PPT

• Degradable pollution
• Non-degradable  pollution 
• Types of pollution ( noise,air,water,land ,soil,thermal,nuclear)
• Air pollution
• Composition of air
• Types of pollutants
• Sources of air pollution
• Ozone depletion
• Water pollution ( meaning, types, definition, sources, causes and control and measures)
• Soil pollution
• Causes of soil degradation
• Marine pollution
• Causes, effects, control, and measure of marine pollution
• Control measures for oil pollution
• Noise pollution
• Levels of noise and vibration
• Decibel levels of common sounds DB
• Ambient noise levels DB
• Safe time exposure in DB
• Effects of noise pollution
• Control techniques
• Thermal pollution
• Nuclear hazards
• Effects of nuclear pollution
• Control measures
• Role of an individual in prevention of pollution

Environmental pollution PPT 2

• Types of pollution
• Water pollution
• Municipal wastewater
• Industrial waste
• Inorganic pollutants
• Organic pollutants
• Agricultural wastes
• Consequences of air pollution
• Land pollution
• Causes of land pollution
• Sources of noise pollution
• Solutions for noise pollution
• Ways to stop pollution
• Global warming and the greenhouse effect
• Difference between global warming and the greenhouse effect
• Some proof of global warming

Light pollution PPT

• What is light pollution?
• Types of light pollution
• Consequences
• Causes effect solution

Photochemical smog PPT

• Photochemical smog
• Air pollutant
• How photochemical smog is formed
• The process involving the formation of photochemical smog
• Effect on human health and plants
• Sources and effect of photochemical smog
• Factors affecting the formation of photochemical smog
• Mitigation measures for photochemical smog
• How to save the environment by preventing smog

Plastic pollution ppt

• What is pollution?
• What is plastic?
• What is plastic pollution?
• History of plastic
• Plastic pollution
• Chemicals in plastic
• Types of plastic products
• Sources of plastic pollution
• Causes of plastic pollution
• Effects of plastic pollution
• Solutions to plastic pollution
• Steps taken by govt
• Initiatives on plastic pollution
• Case studies
• Ways to mitigate plastic pollution
• Scary facts about plastic

Marine pollution PPT

• Types of marine pollution
• Causes & effects of marine pollution
• Prevention and control
• What is a pollution?
• What is marine pollution??
• Causes of marine pollution
• Major impacts of marine pollution
• The health of marine life
• Some examples of marine pollution
• Ways of pollutant inputs 
• Human impacts on marine environments
• How to protect marine life?
• Oil pollution
• Garbage pollution
• Accidental loss or discharge of fishing gear
• Plan to reduce and store your garbage
• Garbage waste management onboard        shore facilities
• Marine pollution threats and biodiversity conservation
• Ocean world
• Marine life and resources
• Marine ecosystem
• Marine biodiversity
• Marine pollution threats
• Pollutants types & sources
• Impact of marine pollution
• Coastal ecology
• Coastal regulation zone (crz)
• Aquaculture: the blue revolution?
• How to solve environmental pollution
• Role of marine biotechnology on environmental pollution
• Suggestions to protect marine environments
• World environmental day- June 5
• Policies and acts for the protection

Thermal pollution PPT

• Diagramatic representation
• Causes of thermal pollution
• Effects of thermal pollution
• Control of thermal pollution
• The Bentley manufacturing company
• Freeze fish breeding in Macquarie river
• Thermal pollution and the Hudson river
• Impacts of thermal pollution
• Thermal pollution causes and consequences

Land pollution PPT

• What is land pollution? 
• Causes of land pollution
• Effects of land pollution
• Prevention of land pollution
• Solutions for land pollution
• WHAT IS NOISE POLLUTION
• Health Effects
• Sources of Noise Pollution
• Solutions for Noise Pollution

Agricultural pollution PPT

• What is agricultural pollution
• Types of agricultural pollution
• Main causes of agricultural pollution
• Effects of agricultural pollution
• Challenges of agricultural pollution
• Ways to reduce agricultural pollution
• Types of the mechanism of agricultural pollution
• Leaching and groundwater poisoning
• Water runoff
• Eutrophication
• Challenges or managements problems of  agricultural pollution
• Prevention and techniques of agriculture pollution
• A figure showing irrigation drainage

Agriculture water pollution PPT

• Agriculture as a cause
• Sources of awp
• Impacts 

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Air Pollution PPT | Free Download | 17 Slides

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To live, we need to breathe. To breathe, we need fresh air. Fresh air is one of the basic and essential things we need to live on earth. Fresh air is equally important to every one us as food and water. Even plants need oxygen to convert food into energy. From these things, we can understand the importance of oxygen and fresh air. A place without oxygen will be a dead zone with no humans, animals, and plants. Without oxygen, nobody can survive on earth.

All these facts point the fingers at the importance of keeping air pollution-free. But the truth is, the air is getting polluted at a massive rate every day. There are hundreds of causes. In these, there are some which are very harmful to us. But how can we reduce the rate of air pollution? Well, there are different ways that we could try to stop air pollution. Before that, let us find out what are the utmost causes of air pollution. Here are they. 

What Do We Mean By Air Pollution?

It’s simple. Air pollution refers to the release of pollutants into the air like Nitrogen Oxide, Volatile Organic Compounds, Carbon Dioxide, Sulphur Oxide, dioxins, and other harmful gases. Once these gases are released, they become a colossal threat to the environment and human health.

How Do We Know the Quality of Air?

The purity of air measured using an AQI thermometer that runs on a scale from 0 to 500. The AQI refers to Air Quality Index. It measures how pure or polluted the surrounding air is. If the numeric value on the scale is between 0-50, the quality of the surrounding air is considered healthy and satisfactory. As the values increase, the quality of the air decreases. If AQI is showing a value of 500, that means you are standing in a hazardous surrounding. Have a look at the AQI chart below for more details.

Major Causes Of Air Pollution

It is well known to everyone how air pollution happens. It happens in many ways. Sometimes careless and reckless human activities lead to the major reasons for air pollution. Even though, here are some of the common causes of air pollution.

Burning of Plastic Wastes.

How do we avoid plastics from our houses? Either we throw them or light them up, right? These careless acts will lead to the worst pollution ever. Burning them releases toxic gases like dioxins, furans, mercury, and polychlorinated. These gases are a threat to the atmosphere, vegetation, humans, and animal health. If we throw them out, they can remain in the soil for 20-500 years before fully decomposing based on the material and structure. Over these years, it pollutes the soil and harms the earth. 

So, burning and throwing plastic does not work and leads to air pollution or soil pollution in the long term perspective. Then what will we do? Well, we can recycle and reuse plastic to an extent. But once the plastic is melted and reformed into new products, the quality of plastic gets reduced. In addition, the quality of plastic will keep reducing with every successive recycling. Furthermore, recycling is limited to a number 3 or 4 times because of the quality compromise of plastic. 

In fact, we only have a limited number of opportunities in the case of plastic. Either we reduce the use of plastic or recycle and reuse them as much as we can. 

Limiting the use of plastic seems more practical and smooth in our day-to-day life. There are many instances where we can reduce the use of plastic. Here are some of the tracts where we can instantly act to limit the usages of plastic

• Use cloth bags instead of plastics bags while going to the shops.
• Use paper plates and tumblers instead of plastic ones when you arrange a tea party or get-togethers. 
• Use paper straws in restaurants and coffee shops.
• Use paper bottled soft drinks.

There are more and more situations where we can reduce the unnecessary use of plastic covers and materials. It can turn out well when more people come forward with the same mindset of bringing down plastic use. 

Are there any alternatives for plastic?

Yes, there are. But literally, there are no materials with the exact matching properties with plastic. For instance, properties like durability, strength, water-resistant, lightweight, and inexpensive are rare to find in materials without polymer as an ingredient. Scientists and researchers are trying to formulate materials with the matching properties as plastic but with less pollution.

As said earlier, there are many instances where we can reduce the use of plastic and always try to avoid it as much as we can. Even if they are baby steps towards reducing plastic, take it and help our environment. Moreover, be a part of keeping the city and your premises clean.

Industrial Emission

Industries play a colossal role in all kinds of pollutions. They contribute almost one-third to the overall when we compare industrial pollution with other causes. Industries will be the 2nd largest cause of air pollution, water pollution, and sound pollution. Pollutants like carbon monoxide, Nitrogen dioxide, and Sulfur dioxide are released when they operate factories and industries. The volume of pollutants released into the atmosphere is way more than we imagine and the problems they can make are huge.

It is necessary to know where the pollution happens and who pollutes the air the most. Studies say that industries that produce electricity pollute the atmosphere more than any other industry.

A considerable amount of pollutants is kicked from the industries when the continuous burning of fossil fuels happened. These emitted gases make the most of the troubles to the ozone layer and cause ozone layer depletion. We need both electricity and the earth. We can not avoid one or the other for any reason. The only way is to protect both without harming each other. The only solution for this will be the rise of green energy. Only the challenge facing is the continuous supply of energy. Green energy like solar and wind are very cost-effective and pollution-free when comparing to the traditional ones.

Each and every individual can contribute and can be a part of saving the earth from air pollution and global warming. Switch to green energy as much as we can and reduce the consumption of traditional electricity from the government or private companies. Nowadays, everybody has inverters in the home as a standard facility. It will not cost you much to connect 2 or 3 solar panels to the battery and save 60% power usage from the traditional electric supply.

How can we reduce industrial air pollution?

As we said earlier, industries and factories are essential for the growth of the people and nation. We can’t stop factories in the name of air pollution. What we can do is, we can find some ways to reduce the amount of air pollution. For instance, we should try to convert these harmful gases to regular gases with the help of proper techniques and setups.

Most importantly, people living near industrial areas are very likely to have many allergies and lung diseases. Always wear a mask when you are going out or going near industrial and factory areas. If you are working in an industrial area, always wear a mask and other safety gear to ensure maximum safety.

Wildfires can take place at any time. It is an unplanned and uncontrolled fire caused by lightning strikes. As the name says, it occurs largely in forest areas. Mostly, the lighting strikes on the trees, branches, dry grass, and then the fire is generated. Eventually, this fire will spread to other trees, branches, and grasses and becomes wildfires, and causes air pollution.

Wildfires are common forested areas of the United States and Canada. It is one of the causes of air pollution, deforestation, and animal extinction. In a wildfire, many animals lose their lives and shelter. Some get burns and wounds in the running through the wildfire. 

All these will continue until fire settles down. Sometimes it takes 2-3 days to settle down completely. But in the end, we lose animals, trees, the environment, and what not?

Also, sometimes the causes of wildfire can be different. Sometimes it happens due to the carelessness of people living around the forest. For instance, even trash burning and campfires can spread fire if not concerned well. So it is always recommended to take precautions while doing wildfire potential activities.

Wildfires get worse when unattended. If you notice any fires or burns that need attention, call the authorities. Sometimes the fire can be controlled before getting worse.

Transportation

Transportation holds a neck-to-neck position with industries in the rate of air pollution. As we all know, the number of vehicles on the road is increasing day by day. Just look around, we could see houses with more than three vehicles even if they don’t need all of them. As the number of vehicles increases, the rate of pollution also tends to be increased. Old model vehicles are more likely to produce more pollution than new ones. Because when the vehicles get older and older, the amount of carbon emission increases. The rate of pollution is still on the rise even after the government and authorities made pollution laws strict. 

Every country has its own vehicle emission standards or norms for the safety of the environment and people living in the country. But still, transportation holds the position for the majority of air pollutions happening around the world.

How can we reduce pollution caused by vehicles?

Earlier, it was challenging to find an alternative for fuels like petrol or diesel. Right now, technology has improved – researchers found a better alternative solution for the petrol and diesel engines for automobiles. Yes, they are EV’s. Electric vehicles are completely different from traditional vehicles. They are pollution-free and highly efficient than fuel engines. Electric vehicles can be charged from the house or charging stations in and around the city. EV’s have 5x efficiency more than the regular diesel or petrol-fueled automobiles and 4x lesser reduced pollution.

EV’s are on the rise. By 2025, at least 50% of the new vehicles coming out from the factories will be electric vehicles. It will seriously help to reduce the rate of pollution to some extend. People will switch to EV’s when companies launch better models with luxury and comfort.

It may sound crazy to most of us. But think about walking a little every day and avoid taking cars or bikes for smaller distances. Or, use a bicycle to travel nearby. It will help us to improve both our health and the earth’s health.

What are the health issues due to air pollution?

The quality of the air we breathe is very crucial. Poor quality can cause many health diseases in both adults and kids. Especially to the people living in cities, the chances of getting a disease like heart disease, stroke, chronic obstructive pulmonary disease (COPD), lung cancer, and acute lower respiratory infections are very high.

Long-term exposure to polluted air in kids can lead to loss of lung capacity, asthma and emphysema. In addition, senior citizens are more likely to get allergies and breathing difficulties since they are less immune to the conditions. As a precaution to all of these, we can wear a mask while going out and traveling. If you are living in a highly polluted area, consider buying an air purifier for your home. An air purifier can help to improve the quality of air by filtering and thereby enabling a healthy environment inside our home for everyone.

How does air pollution affect environmental health?

The toxic gases also affect the environment in the same way. As the amount of harmful gases increases in the earth, the uncertainty of the environment’s health also increases. Changes in climates like temperature hikes, monsoon pattern shifts, and unexpected cyclones are a few examples. In these, ozone layer depletion is being the most complicated one.

We already know what is an ozone layer, and whats does it do? Let’s recall them for a while. The ozone layer is a part of the earth’s atmosphere, and it absorbs almost all of the sun’s harmful ultraviolet light. Guess what will happen when the ozone layer gets holes. All the harmful rays will fall into the animals, plants, and people on earth through the ozone layer holes. Studies say that by 2064 the ozone layer concentration levels may come to zero if the rate of pollution continues invariably. If that happens, the earth will not be a suitable place to live. The fun factor is, we don’t have any space other than earth to live right now. So, we have to protect the planet from being a desert.

Day by day, the rate of pollution is increasing. The hard truth is, nobody is really caring about the future of our planet. Even the government and authorities are keeping their eyes closed on social issues like global warming, air pollution, and soil erosion. If it keeps going like this, the earth will become uninhabitable.

Protecting the earth from pollutions is not deputed on somebody else. Each one of us should take responsibility and behave sensibly to protect the earth from pollution.

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Free Water Pollution PPT Template and Google slides

About the Template

Today one of the most pressing environmental concerns is water pollution. Download this water pollution ppt template and outline your thoughts on water pollution and what can you do to prevent it.

Today water pollution, Air Pollution is becoming a serious concern. Our Free Water Pollution PowerPoint Template features a thoughtfully crafted blend of eye-catching visuals, data-driven charts, and easy-to-read text. With a color scheme that evokes the tranquillity of clean waters and the urgency to protect them, this template sets the stage for impactful storytelling.

Key Features of this free Water Pollution Presentation template:

• Stunning Visuals: From polluted water bodies to images of eco-friendly practices, this PPT on water pollutions provides you wide range of high-quality visuals to support your message.
• Clear and Concise Text: The template’s text sections are formatted for maximum readability, making it easy to create informative content without overwhelming your audience.
• Environmental Icons: Included icons help in reinforcing environmental themes and are easily customizable.
• Section Breaks: Well-structured section breaks allows you to organize your presentation seamlessly, ensuring your content flows naturally.
• Editable and Customizable: The template is fully customizable, so you can tailor it to your specific needs, whether you’re a student, researcher, educator, or environmental advocate.

According to recent research conducted by Environment Protection Agency (EPA), water in many nations’ rivers and lakes and the reservoir is far from pure. Plus, the quality of the water tested is far from pure.

Water pollution is a massive global problem. Every year, millions of pollutants are dumped into our oceans, lakes, and rivers. This contamination can cause serious health problems for both people and wildlife. Thankfully, there are ways to help prevent water pollution from happening. With this water pollution PowerPoint presentation slide , educate your audience and make them understand the causes and essential steps to be taken to reduce the impact.

Water pollution can have a devastating impact on aquatic life and the environment. But together we can protect our waters and preserve our planet! So, what you are waiting for is to get this presentation on water pollution and create awareness in society for preserving the environment.

If you are looking for more environmental-related templates, check out our Creative templates library.

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Air Pollution Infographics

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There are many different types of pollution and it is important to know how we can reduce the ecological impact we can cause with each of them, any help is good! If you are also environmentally conscious, we bring you this template with a collection of infographics about air pollution. Inside you can find all the necessary resources to make your content shine and stand out: tables, graphs of different types, icons, images, maps... In addition, its combination of colors in cool tones will attract the attention of your audience.

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Environmental Pollution

Jul 19, 2014

2.08k likes | 6.68k Views

Environmental Pollution. Pollution Control to save the Earth. Contents. What is Environmental Pollution?. The word pollution comes from the Latin word “ pollutionem ” meaning to defile or to make dirty.

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• leaf abscission
• indoor air pollution
• various forms
• long chain phenolic chemicals
• heavy duty diesel vehicles
• nuclear hazards

Presentation Transcript

Environmental Pollution Pollution Control to save the Earth

What is Environmental Pollution? The word pollution comes from the Latin word “pollutionem” meaning to defile or to make dirty. For normal and healthy living a conducive environment is required by all the living beings, including humans, livestock, plants, micro-organisms and the wildlife. The favourable unpolluted environment has specific composition. When this composition gets changed by addition of harmful substances, the environment is called polluted environment and the substances polluting it are called pollutants. Environmental pollution can, therefore, be defined as any undesirable change in the physical, chemical or biological characteristics of any component of the environment (air, water, soil), which can cause harmful effects on various forms of life or property.

Types of Environmental Pollution Air Pollution Water Pollution Soil Pollution Marine Pollution Noise Pollution Thermal Pollution Nuclear Hazards

Types of Pollutants 1) On the basis of decomposition - A) Non degradable Pollutants • e.g., Aluminium cans, Hg, Pb, Cd , lonf chain phenolic chemicals, DDT. • They pass on from one biological system to another. • B) Bio-degradable Pollutants. • e.g., Domestic sewage 2) On the basis of nature - A) Physical pollutants: Heat, noise, radioactive pollutants B) Chemical Pollutants: Oxides of carbon, sulphur, nitrogen, different halogen gases. C) Biological pollutants: Bacteria, virus, fungi etc.

Types of Pollutants 3) On the basis of state - A) Solid particulate pollutant B) Liquid particulate pollutant: Leaked oil slicks oil sea water, dissolved solids, oils and grease C) Gaseous particulate pollutant: CFCs, SOx, NOx etc. 4) On the basis of their existence in nature - A) Quantitative pollutant: These are the substances which occur in the environment but becomes pollutant when their concentration reaches beyond a threshold value in the environment. Example: CO2, NO2 etc B) Qualitative pollutant: These are the substances which do not occur in the environment but are passed into it through human activity. Example: fungicides, herbicides, DDT etc

Types of Pollutants 5) On the basis of their of source of origin - A) Point source pollutant: When the origin source is point e.g., emissions from stack. B) Line source pollutant: transportation of material by conveyor belts, road rollers, run off seepage etc. C) Area source pollutant: When the source is an area e.g., blasting in mines

Air Pollution It is an atmospheric condition in which certain substances (including the normal constituents in excess) are present in concentrations which can cause undesirable effects on man and his environment. These substances include gases, particulatematter, radioactive substances etc. Gaseous pollutants include oxides of sulphur (mostly SO2,SO3) oxides of nitrogen mostly (NO and NO2 or NOx) carbon monoxide (CO), volatile organic compounds (mostly hydrocarbons) etc. “Particulatepollutantsincludesmoke, dust, soot, fumes, aerosols, liquiddroplets, pollen grains etc. Radioactive pollutants include Radon-222, iodine-131,strontium-90, plutonium-239 etc.

Classification of Air Pollutants 1) On the basis of decomposition - A) Non degradable Pollutants e.g. Aluminium cans, Hg, Pb, Cd , long chain phenolic chemicals, DDT. They pass on from one biological system to another. B) Bio-degradable Pollutants e.g. Domestic sewage. 2) On the basis of chemical composition - Organic pollutants e.g. Hydrocarbons, aldehydes, ketones, amines etc. B) Inorganic Pollutants e.g. Carbon compounds (CO and carbonates), sulphur compounds (H2S, SO2, H2SO4), nitrogen compounds (NOx, NH3), different halogen compounds (HF, HCl and metallic fluorides)

Classification of Air Pollutants Inorganic Particles (e.g. Fly ash, silica, asbestos and dusts from transport, mining, metallurgical and other industrial activities 3) On the basis of state of matter - A) Gaseous Pollutants Which get mixed with the air and do not normally settle out, e.g., CO, NOx and SO2 B) Particulate Pollutants Which comprise of finely divided soilds or liquids and often exist in colloidal state as aerosols, e.g., smoke, fumes, dust, mist, fog, smog and sprays

Sources of Air pollution 1) Natural sources • Natural contaminants usually present in the air are pollen, fungal spores, bacteria and marsh gas. • CO from the breakdown of methane • Volcanic eruptions • Forest fire release smoke and harmful trace gases • Salt spray from oceans • Dust storms. 2) Man-made sources • thermal power plants, industrial units, • vehicular emissions, • fossil fuel burning, • agricultural activities

Sources of Air pollution Thermal power plants have become the major sources of generating electricity in India as the nuclear power plants couldn’t be installed as planned. The main pollutants emitted are fly ash and SO2. Metallurgical plants also consume coal and produce similar pollutants. Fertilizer plants, smelters, textile mills, tanneries, refineries, chemical industries, paper and pulp mills are other sources of air pollution. Automobile exhaust is another major source of air pollution. Automobiles release gases such as carbon monoxide (about 77%), oxides of nitrogen (about 8%) and hydrocarbons (about 14%). Heavy duty diesel vehicles spew more NOx and suspended particulate matter (SPM) than petrol vehicle which produce more carbon monoxide and hydrocarbons.

Sources of Air pollution • Indoor Air Pollution • use of fuels like coal, dung-cakes, wood, kerosene in their kitchens (incomplete • combustion produces carbon monoxide. Coal contains varying amounts of sulphur which on burning produces sulphur dioxide. • Fossil fuel burning produces black soot. These pollutants i.e. CO, SO2, soot and many others like formaldehyde, benzene α pyrene (BAP) are toxic and harmful for health) • Smoking (pyrene is also found in cigarette smoke) • using wood as fuel for cooking inhales BAP (equivalent to 20 packets of cigarette a day) • radioactive Radon (Ra222) causes indoor air pollution in concrete buildings.

Effects of Air pollution 1) Effects on human health - • A) Irritation on the respiratory tract. • B) Irritation of eye, nose and throat. • C) Pb particulate cause convulsions, coma and even death • D) HF causes fluorosis and mottling of teeth • E) A variety of pollens can initiate asthmatic attack • F) Hg results in kidney, nerve and brain damage • G) Ni causes respiration damage. • H)Cd particulates through cigarrette smoking cause cardiovascular diseases , kidney and liver damage and even death.

Effects of Air pollution 2) Effects on plants - • SO2 bleaches the leaf surface and causes chlorosis • NO2 causes premature leaf fall and necrosis. • O3 damage leaves • PAN is responsible for suppressed growth, silvering of lower leaf surface • Ethylene induces leaf abscission, leaf epinasty • CO causes curling and premature falling of leaves.

Effects of Air pollution 3) Effect on climate - • Increase of CO2 • Global warming • Melting of ice, glaciers • Thinning of ozone layer • Penetration of UV rays

Effects of Air pollution 4) Effects on aquatic life – Air pollutants mixing up with rain can cause high acidity (lower pH) in fresh water lakes. This affects aquatic life especially fish. Some of the freshwater lakes have experienced total fish death. 5) Effect on materials – Because of their corrosiveness, particulates can cause damage to exposed surfaces. Presence of SO2 and moisture can accelerate corrosion of metallic surfaces. SO2 can affect fabric, leather, paint, paper, marble and limestone. Ozone in the atmosphere can cause cracking of rubber. Oxides of nitrogen can also cause fading of acetate, cotton and rayon fibres.

Control Measures of Air pollution • Air pollution can be minimized by the following methods: • · Siting of industries after proper Environmental Impact Assessment studies • · Using low sulphur coal in industries • · Removing sulphur from coal (by washing or with the help of bacteria) • · Removing NOx during the combustion process • · Removing particulate from stack exhaust gases by employing electrostatic • precipitators, bag-house filters, cyclone separators, scrubbers etc. • · Vehicular pollution can be checked by regular tune-up of engines, • replacement of old, more polluting vehicles, installing catalytic converters, • by engine modification to have fuel efficient (lean mixtures) to reduce CO • and hydrocarbon emissions and burning fuels slow and cooler to reduce • NOx emission (Honda Technology) • · Using mass transport system, bicycles etc. • · Shifting to less polluting fuels (hydrogen gas) • · Using non-conventional sources of energy • · By using biological filters and bio-scrubbers • · By planting more trees

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