Sulfur cycle

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Sulfur cycle

  1. 1. Sulfur CycleSedimentary and Gaseous
  2. 2. • Sedimentary cycle – Weathering of rock and leaching of its minerals, transport, deposition and burial.• Gaseous Cycle – A biogeochemical cycle with the main reservoir or pool of nutrients in the atmosphere and ocean
  3. 3. Sulfur enters the biosphere through • Natural Activity Carried through terrestrial Weathering of rocks and environments in salt decomposition solution. Consumers Plants
  4. 4. Sulfur enters the atmosphere through• Natural Activity • Human Activity Volcanic eruptions, gases Burning of fossil fuels, acidic released by decomposition drainage from mines Enters atmosphere as H2S and reacts with oxygen to form SO2
  5. 5. SO2 is soluble in H2O Acid rain (H2SO4) consumers plants
  6. 6. Death of consumers Sulfur to the atmospherePonds, lakes, seas and soil oceans
  7. 7. Different kinds of bacteria process this sulfur Non-photosynthetic photosynthetic Purple bacteriaColorless sulfur bacteria Green bacteria
  8. 8. Sulfur IronFerrous sulfide (FeS2)
  9. 9. Sulfur from the oceansReleased in the atmosphereas Dimethyl sulfide ((CH3)2S )Go back to the atmosphereby bacteria fixation, or sea sprays

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