Download Environmental Pollution

Journal of Medicinal Chemistry and Drug Discovery
ISSN: 2347-9027
International peer reviewed Journal
Special Issue
Analytical Chemistry Teachers And Researchers
Association
National Convention/Seminar
Issue 2, Vol. 1, pp 981-988, 28 February 2016, Available online at http://www.jmcdd.com
Environmental Pollution
Kulkarni G. A.
A., Somwanshi J. L. and Khadke V. V.
SMP College, Murum, Tq. Omerga Dist. Osmanabad
Environmental pollution is “the contamination of the physical and biological components of
the earth/atmosphere system to such an extent that normal environmental processes are adversely
affected”.
”. “Pollution is the introduction of contaminants into the environment that cause harm or
discomfort to humans or other living organisms, or that damage the environment” which can
come “in the form of chemical substances, or energy such as noise, heat or light”. ““Pollutants can
be naturally occurring substances or energies, but are considered contaminant
contaminants when in excess of
natural levels.”
Pollution is “the addition of any substance or form of energy (e.g., heat, sound, radioactivity)
to the environment at a rate faster than the environment can accommodate it by dispersion,
breakdown, recycling, or storage
stora in some harmless form”.
“Pollution is a special case of habitat destruction; it is chemical destruction rather than the
more obvious physical destruction. Pollution occurs in all habitats—land,
habitats land, sea, and fresh water—
water
and in the atmosphere.” “Much of what we have come to call pollution is in reality the
nonrecoverable matter resources and waste heat.” “Any use of natural resources at a rate higher
than nature's capacity to restore itself can result in pollution of air, water, and land.” “Pollution is
habitat contamination”.
Perhaps the overriding theme of these definitions is the ability of the environment to absorb
and adapt to changes brought about by human activities.
In one word, environmental pollution takes place when the environment cannot process and
neutralize harmful by-products
products of human activities (for example, poisonous gas emissions) in
due course without any structural or functional damage to its system.
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Journal of Medicinal Chemistry and Drug Discovery
ISSN: 2347-9027
International peer reviewed Journal
Special Issue
Analytical Chemistry Teachers And Researchers
Association
National Convention/Seminar
Issue 2, Vol. 1, pp 981-988, 28 February 2016, Available online at http://www.jmcdd.com
In fact, “the due course” itself may last many years during which the nature will attempt to
decompose the pollutants; in one of the worst cases – that of radioactive pollutants – it may take
as long as thousands of years for the decomposition of such pollutants to be completed.
Pollution occurs, on the one hand, because the natural environment does not know how to
decompose the unnaturally
naturally generated elements (i.e., anthropogenic pollutants), and, on the other,
there is a lack of knowledge on the part of humans on how to decompose these pollutants
artificially.
Why does pollution matter?
It matters first and foremost because it has negative impacts on crucial environmental
services such as provision of clean air and clean water (and many others) without which life on
Earth as we know it would not exist.
Introduction to Environmental Pollution
Although pollution had been known to exist for a very long time (at least since people
started using fire thousands of years ago), it had seen the growth of truly global proportions only
since the onset of the industrial
rial revolution during the 19th century.
The industrial revolution brought with it technological progress such as discovery of oil
and its virtually universal use throughout different industries. Technological progress facilitated
by super efficiency of capitalist
apitalist business practices had probably become one of the main causes
of serious deterioration of natural resources.
At the same time, development of natural sciences led to the better understanding of
negative effects produced by pollution on the enviro
environment.Environmental
nment.Environmental pollution is a problem
both in developed and developing countries
countries. Factors such as population growth and urbanization
invariably place greater demands on the planet and stretch the use of natural resources to the
maximum.
It has been argued
gued that the carrying capacity of Earth is significantly smaller than the
demands placed on it by large numbers of human populations. And overuse of natural resources
often results in nature’s degradation.It’s interesting to note that natural resources had been stored
virtually untouched in the Earth for millions of years.
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Journal of Medicinal Chemistry and Drug Discovery
ISSN: 2347-9027
International peer reviewed Journal
Special Issue
Analytical Chemistry Teachers And Researchers
Association
National Convention/Seminar
Issue 2, Vol. 1, pp 981-988, 28 February 2016, Available online at http://www.jmcdd.com
But since the start of the industrial revolution vast amounts of these resources had been
exploited within a period of just a couple of hundred of years at unimaginable rates,
rates with all the
waste from this exploitation going straight in to the environment and seriously damaging its
natural processes.
What are they & how do they decompose?
Environmental pollutants are constituent parts of the pollution process. They are the
actual “executing agents”” of environmental pollution. They come in gaseous,
gaseous solid or liquid
form. It is interesting to note that, as of 1990, there were around 65,000 different chemicals in
the marketplace, i.e. potential environmental pollutants that were to be released into air, water
and land on a regular basis. We assume that, as of 2011 - 2012, this number may be significantly
higher.
Renowned author Miguel A. Santos identifies at le
least three general characteristics of
environmental pollutants

Pollutants don't recognize boundaries, i.e. they are transboundary;

Many of them can't be degraded by living organisms and therefore stay in the ecosphere
for many years; and

They destroybiota and habitat.
These points emphasize that pollutants present a serious long-term
long term global problem that
affects more or less every country and, therefore, can only be solved by a coordinated set of
actions and unwavering commitment of nations to international environmental agreements.
In order to develop and implement an effective international policy for pollutants’ management,
it is important, among other factors, to understand their decomposition mechanisms.We know
that decomposition of pollutants can occur either biologically or physico-chemically
chemically.
Biological Decomposition of Environmental Pollutants
It divides environmental pollutants into biodegradable and non-biodegradable
biodegradablewhich
describes them as follows.
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Journal of Medicinal Chemistry and Drug Discovery
ISSN: 2347-9027
International peer reviewed Journal
Special Issue
Analytical Chemistry Teachers And Researchers
Association
National Convention/Seminar
Issue 2, Vol. 1, pp 981-988, 28 February 2016, Available online at http://www.jmcdd.com
Biodegradable Pollutants
Biodegradable pollutants are the ones that can be broken down and processed by living
organisms,, including organic waste products, phosphates, and inorganic salts.
For example, if a pollutant is organic, it can be used by a living organism to obtain
energy and other material from carbohydrates, proteins etc.
Therefore, biodegradable pollutants are only “temporary nuisances” that can be neutralized and
converted into harmless compounds.
However, it is important to remember that they can become serious pollutants
poll
if released
in large amounts in small areas, thus exceeding the natural capacity of the environment to
“assimilate” them.
Non-Biodegradable
Biodegradable Pollutants
Non-biodegradable
biodegradable pollutants are the ones that cannot be decomposed by living
organisms and therefore
fore persist in the ecosphere for extremely long periods of time.
They include plastics, metal, glass, some pesticides and herbicides, and radioactive
isotopes.In addition to that, fat soluble (but not water soluble) non-biodegradable
biodegradable pollutants, ex.
mercury
ry and some hydrocarbons, are not excreted with urine but are accumulated in the fat of
living organisms and cannot be metabolized.
Non-Biological
Biological Decomposition of Environmental Pollutants
Non-biological
biological decomposition of non-biodegradable
non biodegradable pollutants requires
requi a combination of
many factors, such as wind, water and climate to work together to achieve neutralization of
pollutants. Some of the most dangerous pollutants such as radioactive isotopes can decompose
by themselves but it will take them thousands of years.
y
Types of Environmental Pollution
Generally speaking, there are many types of environmental pollution but the most important ones
are:

Air pollution
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Journal of Medicinal Chemistry and Drug Discovery
ISSN: 2347-9027
International peer reviewed Journal
Special Issue
Analytical Chemistry Teachers And Researchers
Association
National Convention/Seminar
Issue 2, Vol. 1, pp 981-988, 28 February 2016, Available online at http://www.jmcdd.com

Water pollution

Soil pollution (contamination)
Some of the most notable air pollutants are sulfur dioxide, nitrogen dioxide, carbon
monoxide, ozone, volatile organic compounds (VOCs) and airborne particles, with radioactive
pollutants probably among the most destructive ones (specifically when produced by nuclear
explosions). Our Air Pollutants article provides a clear overview of sources and effects of these
air pollutants.Water
Water pollutants include insecticides and herbicides, food processing waste,
pollutants from livestock operations, volatile organic compounds (VOCs), heavy metals,
chemical waste and others.
Some soil pollutants are: hydrocarbons, solvents and heavy metals.
So where does environmental pollution come from?
Sources of Environmental Pollution
In modern
ern industrialized societies, fossil fuels (oil, gas, coal) transcended virtually all
imaginable barriers and firmly established themselves in our everyday lives. Not only do we use
fossil fuels for our obvious everyday needs (such as filling a car), as we
well as in the powergenerating industry, they (specifically oil) are also present in such products as all sorts of
plastics, solvents, detergents, asphalt, lubricating oils, a wide range of chemicals for industrial
use, etc.
Combustion of fossil fuels produces
prod
extremely high levels of air pollution and is widely
recognized as one of the most important “target” areas for reduction and control of
environmental pollution. Fossil fuels also contribute to soil contamination and water pollution.
For example, when oil is transported from the point of its production to further destinations by
pipelines, an oil leak from the pipeline may occur and pollute soil and subsequently groundwater.
When oil is transported by tankers by ocean, an oil spill may occur and pollut
pollute ocean water.
Of course, there are other natural resources whose exploitation is a cause of serious pollution; for
example, the use of uranium for nuclear power generation produces extremely dangerous waste
that would take thousands of years to neutralize.
neutraliz
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Page 985
Journal of Medicinal Chemistry and Drug Discovery
ISSN: 2347-9027
International peer reviewed Journal
Special Issue
Analytical Chemistry Teachers And Researchers
Association
National Convention/Seminar
Issue 2, Vol. 1, pp 981-988, 28 February 2016, Available online at http://www.jmcdd.com
But there is no reasonable doubt that fossil fuels are among the most serious sources of
environmental pollution.Power-generating
pollution.Power generating plants and transport are probably the biggest sources
of fossil fuel pollution.
Common sources of fossil fuel pollution are:
Industry:

Power-generating
generating plants

Petroleum refineries

Petrochemical plants

Production and distribution of fossil fuels

Other manufacturing facilities
Transport:

Road transport (motor vehicles)

Shipping industry

Aircraft
Fossil fuel combustion is also a major source of carbon dioxide (CO2) emissions and
perhaps the most important cause of global warming.. Learn more about the causes and effects of
global warming here.
Other Sources of Environmental Pollution
Among other pollution sources, agriculture (livestock farming) is worth mentioning as
the largest generator of ammonia emissions resulting in air pollution.
Chemicals such as pesticides and fertilizers are also widely used in agriculture, which
may lead water pollution and soil contamination as well. Trading activities may be another
source of environmental pollution.
For example, it’s been recently noted that packaging of products sold in supermarkets and
other retail outlets is far too excessive and ge
generates
nerates large quantities of solid waste that ends up
either in landfills or municipal incinerators leading to soil contamination and air
pollution.
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Journal of Medicinal Chemistry and Drug Discovery
ISSN: 2347-9027
International peer reviewed Journal
Special Issue
Analytical Chemistry Teachers And Researchers
Association
National Convention/Seminar
Issue 2, Vol. 1, pp 981-988, 28 February 2016, Available online at http://www.jmcdd.com
Residential sector is another significant source of pollution generating solid municipal
waste that may
ay end up in landfills or incinerators leading to soil contamination and air
pollution.Our uniqueanalysis of Causes of Pollution will give you an excellent perspective on the
fundamental pollution drivers such as globalization, industrialization and population growth.
growth
Since air pollution is one of the largest areas of environmental pollution studies, our
discussion on Air Pollution Causes explains how each major pollutant contributes specifically to
air pollution.
Environmental Pollution Effects
Environmental pollutioneffects
pollution
can be truly damaging. Some
me of the effects of air
pollution include asthma, reduced energy levels, irritation of eyes, disruption of the immune
system, malfunction of the central nervous system, cancer. Water pollution can cause skin rashes
& allergies, all sorts of water-borne
water
infections,
fections, vomiting & stomach aches, malfunction of the
central nervous system and so on. Soil pollution is, in a way, connected to water pollution and
may cause cancer, headaches, fatigue, skin rashes and so on.
Removal of Air Pollutants from the Atmosphere
Atmosphe
Air pollutants, as opposed to solid and liquid pollutants found on land and in water, may
be removed from the atmosphere through wet deposition or dry deposition.
deposition In case of wet
deposition pollutants make way into clouds or other precipitation and then get deposited onto the
surface of the Earth by way of rain. In case of dry deposition, pollutants are deposited directly
onto the planet's surface and vegetation, such as plants and
and trees of tropical rainforests. We may
assume that once air pollution has been deposited onto the planet's surface, the normal rules of
biological and non-biological
biological decomposition for other types of pollutants will apply.
Environmental Pollution - Conclusion
Conclu

Environmental pollution is causing a lot of distress not only to humans but also animals,
driving many animal species to endangerment and even extinction.

The Transboundary nature of environmental pollution makes it even more difficult to
manage it – you cannot build brick walls along the borders of your country or put
customs cabins at every point of entry to regulate its flows into your country.
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Journal of Medicinal Chemistry and Drug Discovery
ISSN: 2347-9027
International peer reviewed Journal
Special Issue
Analytical Chemistry Teachers And Researchers
Association
National Convention/Seminar
Issue 2, Vol. 1, pp 981-988, 28 February 2016, Available online at http://www.jmcdd.com

Everything on our planet is interconnected,, and while the nature supplies us with valuable
environmental services without which we cannot exist, we all depend on each other’s
actions and the way we treat natural resources.

It’s widely recognized that we are hugely overspending our current budget of
o natural
resources – at the existing rates of its exploitation, there is no way for the environment to
recover in good time and continue “performing” well in the future.

Perhaps we should adopt a holistic view of nature – it is not an entity that exists
separately from us; the nature is us, we are an inalienable part of it, and we should care
for it in the most appropriate manner. Only then can we possibly solve the problem of
environmental pollution.
References
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Dictionary.. London: Routledge , p. 129.
Retrieved December 23, 2011 from Questia.com
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3. Pollution. (2011). In Encyclopedia Britannica
Britannica.. Retrieved December 23, 2011 from:
http://www.britannica.com/EBchecked/topic/468070/pollution
4. Santos, M. A. (1990). Managing Planet Earth: Perspectives on Population, Ecology,
and the Law.. Westport, CT: Bergin & Garvey, p. 44. Retrieved April 3, 2008
5. Ehrlich, P. R., Ehrlich, A. H., & Holdren, J. P. (1977). Ecoscience: Population,
Resources, Environment.
Environment. San Francisco: W. H. Freeman, p. 536. Retrieved November
22, 2008
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7. Gardiner, L. (February, 2006). Air Pollution Affects Plants, Animals, and Environments.
Environments
Windows to the Universe. Retrieved April 3, 2008
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