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EPA proposing mercury rule for taconite iron ore processing plants

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The US Environmental Protection Agency (EPA) is proposing amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for taconite iron ore processing plants that include new emission standards for mercury as well as revising the existing emission standards for hydrogen chloride and hydrogen fluoride. formaldehyde).

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Chalmers team develops method to reduce levels of mercury in sulfuric acid

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Researchers at Chalmers University of Technology, Sweden, have developed a method that can reduce the levels of mercury in sulfuric acid by more than 90%, even from low levels. It is therefore a worldwide challenge that sulfuric acid often contains one of the most toxic substances: mercury.

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Nations agree on global, legally binding treaty on mercury emissions: Minamata Convention on Mercury

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At the conclusion of the International Negotiating Committee on Mercury ( INC5 ) meeting in Geneva ( earlier post ), nations agreed on a global, legally-binding treaty to prevent mercury emissions and releases. The scope of the new treaty which puts in controls and also reduction measures in respect to mercury is as follows: Products.

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EPA issues first National Standards for mercury and air toxics pollution from power plants

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The US Environmental Protection Agency (EPA) has issued the Mercury and Air Toxics Standards (MATS), the first national standards for power plant emissions of mercury and toxic air pollutants (also known as hazardous air pollutants, HAPs) such as arsenic, acid gas, nickel, selenium, and cyanide. fossil-fuel-fired power plants.

Mercury 199
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Inorganic mercury converted to more toxic and bio-accumulative monomethylmercury in ocean waters, possibly by microbes

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A team led by the University of Alberta has confirmed that inorganic mercury (Hg) found worldwide in ocean water is transformed into monomethylmercury (MMHg)—a potent and bio-accumulative neurotoxin—in the seawater. In a 1991 paper discussing concerns with mercury and monomethylmercury, William F. Fitzgerald and Thomas W.

Mercury 210
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Study from Thuringia shows 50% of harmful soot comes from local sources, 50% from long-distance transport

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Carbonaceous aerosol particles predominate in the total mass of particles, consisting of a large number of chemical species and can be divided into organic aerosol (OA) and black carbon (BC). The main sources were combustion emissions, probably from wood and coal-fired heating systems. forest fires).

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Final session on international mercury convention this week expected to culminate in agreement; UNEP Global Mercury Assessment 2013 finds industrial source Hg emissions may be rising

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Unintentional emission sectors: Coal burning, ferrous- and non-ferrous (Au, Cu, Hg, Pb, Zn) metal production, cement production. The fifth and final session of negotiations on the establishment of an international mercury convention—International Negotiating Committee on Mercury (INC5)—is taking place this coming week in Geneva.

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