ENVR 200 Lecture Notes - Lecture 22: Nitrifying Bacteria, Methanogenesis, Denitrification
23 Nov 2017
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S is a key component of protein along with n and c. S uptake-decomposition cycle similar to short c and n cycles. Using electron other than o2(unavailable in flood soils and sediments) Release s from lithosphere to volcanos, then produce so2 >(so4)2-in troposphere. So2 from the volcano to stratosphere, turn to the form of ions (so4)2-aerosol(sulfate veil", Aerosol is white thin layer to reflect solar radiation), then clouds formation(optional) Transfer in two ways to so4 aerosol(caso4), then back to terrestrial. S from boring fossil fuels will produce sulphate, coal burning release s into atmosphere, Producing s the biggest problem in industry(80mt/yr), volcano only released 10mt/yr. H2so4 will in the clouds to precipitate the acid rain. Sulphide-rich ores >acid mine drainage to terrestrial from terrestrial >surface and ground water so4 into the ocean the clouds will form rain in the ocean with (so4)2-ions. Form carbonyl sulphate into stratosphere(uv involved) to form more so4 aerosol summary:
