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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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Upper atmosphere facilitates changes that let mercury enter food chain

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New research shows that the upper troposphere and lower stratosphere work to transform elemental mercury into oxidized mercury, which can easily be deposited into aquatic ecosystems and ultimately enter the food chain. Exposures to mercury can affect the human nervous system and harm the brain, heart, kidneys, lungs, and immune system.

Mercury 210
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PCAST suggests 6 key components for climate change strategy to President Obama; adaptation and mitigation

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The President’s Council of Advisors on Science and Technology (PCAST) released a letter to President Obama describing six key components the advisory group believes should be central to the Administration’s strategy for addressing climate change. Both approaches are essential parts of an integrated strategy for dealing with climate change.

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Duke study finds China’s synthetic natural gas plants will have heavy environmental toll; 2x vehicle GHG if used for fuel

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Coal-powered synthetic natural gas (SNG) plants being planned in China would produce seven times more greenhouse gas emissions than conventional natural gas plants, and use up to 100 times the water as shale gas production, according to a new study by Duke University researchers published in the journal Nature Climate Change.

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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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From the researchers’ point of view, this underlines the need to further reduce emissions of soot that is harmful to health and the climate, as the carbon-containing particles still contribute to health hazards and climate warming even over distances of several hundred kilometers. The EU Air Quality Directive is to be updated by 2022.

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EPA proposes CO2 emission standards for new fossil fuel-fired power plants

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The proposed rulemaking establishes separate standards for natural gas and coal plants. coal units) are based on the performance of a new efficient coal unit implementing partial carbon capture and storage (CCS). Climate Change Coal Emissions Natural Gas Policy Power Generation'

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EPA proposes rule for nationwide 30% cut in GHG from existing power plants by 2030 relative to 2005

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The value allocated here in EPA’s goal-setting formula was an average heat rate improvement of 6% for coal steam electric generating units (EGUs). In 2020, EPA projects a 20% to 23% reduction of SO 2 ; 22% to 24% reduction of NO x ; and a 15% to 18% reduction of mercury, under the proposed Option 1 illustrative scenarios.

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