Harm from pollution

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  • Environmental protection education is the responsibility of the whole society, especially in the university system. Although virtually all students have also recognized the harmful effects of environmental pollution on humans, the awareness of preserving and protecting the environment from the smallest actions is not the habit and regular action campaign of the country’s future generation students.

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  • Lead (Pb) is a harmful pollutant that disrupts normal functions from the cell to organ levels. Salix babylonica is characterized by high biomass productivity, high transpiration rates, and species specific Pb. Better understanding the accumulating and transporting Pb capability in shoots and roots of S. babylonica, the toxic effects of Pb and the subcellular distribution of Pb is very important.

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  • The application of hydrocarbon degrading microorganisms in bioremediation applications is a promising approach to accelerate the clean-up of polluted soils. The use of microorganisms to accelerate the natural detoxification processes of toxic substances in the soil represents an alternative ecofriendly and low-cost method of environmental remediation compared to harmful incineration and chemical treatments.

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  • The presence of organic sulfur-containing oil in the environment is harmful to animals and human health. The combustion of these compounds in fossil fuels tends to release sulfur dioxide in the atmosphere, which leads to acid rain, corrosion, damage to crops, and an array of other problems. The process of biodesulfurization rationally exploits the ability of certain microorganisms in the removal of sulfur prior to fuel burning, without loss of calorific value.

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  • Rhizoremediation is an in-situ remediation approach involving microorganisms for the biodegradation of organic pollutants and various other contaminants in the root zone. Plant roots provide a rich niche for the microorganisms to grow at the expense of the root exudates and in turn microbes act as biocatalysts to remove the pollutants. The harmful pollutants such as: polycyclic aromatic hydrocarbons (PAHs)- pesticides, herbicides etc. are converted to degradable compounds, while heavy metals such as zinc, copper, lead, tin, cadmium etc.

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  • It was examined that weeds cause a lot of problems in the crop field. Weeds compete with the main crop for nutrients, water, food, space, sunlight etc. Weeds utilize the nutrients provided to the main crop and sometimes dominate the main crop. Some weeds are very noxious and they are harmful for both humans as well as animals. It is clearly revealed from studies done in field of weeds that use of herbicides used to control weeds cause many effects on soil as it leads to degradation in the quality of soil, water as well as it pollutes environment.

    pdf6p nguathienthan3 27-02-2020 24 1   Download

  • This paper is a monograph review of two sides of energy sector industrialisation in the MD with a focus on ‘green’ and ‘grey’ socio-economic development (as ‘xanh’ and ‘xám’ in Vietnamese respectively). ‘Green’ energy is understood as the electricity generated from inexhaustible sources and known as renewable energy. It emits fewer greenhouse gases and causes less harm to habitats in comparison to traditional fossil fuels and hydropower. ‘Grey’ energy is another word for non-renewable energy or polluting energy, which can have negative effects on human health, environment, and climate.

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  • Pollution from heavy metals is a global problem that is very dangerous to the environment. Among the heavy metals, cadmium is receiving more and more attention because it is one of the most ecotoxic, making it very harmful for biological activity in soil, biodiversity, plant metabolism, and human and animal health.

    pdf5p danhdanh11 11-01-2019 20 0   Download

  • The Agency’s FY 2013 budget request supports the Administration’s commitment to ensure that all Americans are protected from significant risks to human health and protect the environment where they live, learn and work. The EPA’s work touches on the lives of every single American, every single day as we protect the environment for our children, but also for our children’s children. The mission, day in and day out, is to protect the health of the American people by keeping pollution out of the air we breathe, toxins out of the water we drink and swim in, and harmful chemicals...

    pdf1457p nhacsihuytuan 13-04-2013 49 7   Download

  • Many harms flow across the ever-more porous sovereign borders of a globalizing world. These harms expose weaknesses in the international legal regime built on sovereignty of nation states. Using the Trail Smelter arbitration, one of the most cited cases in international environmental law, this book explores the changing nature of state responses to transboundary harm. Taking a critical approach, the book examines the arbitration’s influence on international law generally and international environ- mental law specifically.

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  • If the soil becomes saturated, oxygen may become scarce and in anoxic conditions, denitrifying bacteria may convert the nitrate to nitrogen gases (NO, N2O, and N2). Nitrogen converted to these gases becomes unavailable for plant uptake or for surface water contamination. Additionally, saturated soil during the growing season is harmful to many crops like maize that cannot tolerate low oxygen concentrations in the root zone for more than a few days.

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  • Sulfur trioxide irritates the mucous membranes of the respiratory tract. A concentration of 1 volume of SO3 in a million volumes of air (one part per million or 1 ppm) is enough to cause coughing and choking. Sulfur trioxide dissolves in water to form sulfuric acid, which is a strong acid capable of corroding or destroying many materials. Sulfur trioxide can absorb moisture from the atmosphere to form very fine droplets of sulfuric acid. Inhalation of these droplets can harm the respiratory system. Chronic exposure leads to a much greater likelihood of suffering from bronchitis.

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  • The presentation "Biomass pollution basics" addresses the basics of biomass burning and introduces participants to the concept of incomplete combustion, the wide range of pollutants emitted from wood fires and stoves and typical pollutant concentrations. Two pollutants are of primary interest for both health effects and IAP monitoring: particulate matter (PM) and carbon monoxide (CO). Smaller particles (PM2.5 and PM1) are likely to be most harmful, as they penetrate deep into the human lung. Larger particles are more likely to get 'filtered' by the upper respiratory tract.

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  • Like outdoor air , indoor air contains a complex mixture of pollutants (chemical substances, allergens and microbes) from different sources that changes with time. Findings on the health effects of single air pollutants cannot necessarily be extended to mixtures. Indeed, different chemicals may interact with each other and cause more (or less) harmful effects than the sum of the effects caused by each chemical separately. Very little is known about the combined effects of indoor air pollutants.

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  • Outside the air regulatory setting, park, forest, and refuge managers may use data from air pollution related lichen studies to aid management decisions, conduct NEPA analyses, and provide information to the public about resource condition and impacts. To meet the requirements of the Wilderness Act, Organic Act, and National Wildlife System Improvement Act, federal land managers often subscribe to what is known as the “precautionary principle.

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  • Air pollution is a leading environmental threat to the health of urban populations overall and specifically to New York City residents. Clean air laws and regulations have improved the air quality in New York and most other large cities, but several pollutants in the city’s air are at levels that are harmful. This report provides estimates of the toll of air pollution on the health of New Yorkers. It focuses on 2 common air pollutants—fine particulate matter (PM2.5) and ozone (O3).

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  • Air pollution is one of the most serious environmental threats to urban populations (Cohen 2005). Exposures vary among and within urban areas, but all people living in cities are exposed, and many are harmed, by current levels of pollutants in many large cities. Infants, young children, seniors and people who have lung and heart conditions are especially affected, but even young, healthy adults are not immune to harm from poor air quality.

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  • It is important to note that NPDES permits are only required of so-called “point sources.” Point sources tend to be larger industrial and commercial facilities and public treatment facilities. Some large agricultural operations are considered point sources, but, by and large, runoff from farms, roads, lawns, and most small pollution sources are not directly regulated. These “nonpoint sources” are the subject of increased scrutiny, since most of the nation’s remaining water quality problems are due to nonpoint pollution.

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  • Congress has enacted laws requiring individuals and facilities to take measures to protect environmental quality and public health by limiting potentially harmful emissions and discharges, and remediating damage. Enforcement of federal pollution control laws in the United States occurs within a highly diverse, complex, and dynamic statutory framework and organizational setting. Multiple statutes address a number of environmental pollution issues, such as those associated with air emissions, water discharges, hazardous wastes, and toxic substances in commerce.

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  • Inorganic mercury is toxic when humans or wildlife are exposed to high levels for a short peri- od of time. Organic methylmercury has a greater tendency to accumulate in the body over time, eventually causing harm, even in small amounts. Methylmercury has the three properties that make substances particularly harmful to humans and other organisms — it persists, it bioaccumulates, and it is toxic to most life forms. The health effects of mercury are described in more detail in the next chapter of this primer.

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