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Sulfur Cycle

By Madeline McGonagle, Hayley Taliento, Elizabeth Williams, and Julia Hyndman

Hayley Taliento

on 25 October 2012

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Transcript of Sulfur Cycle

by Madeline McGonagle, Elizabeth Williams, Hayley Taliento, and Julia Hyndman AP Environmental, period 3 The Sulfur Cycle: Fun Facts Impact of Human Intervention on the Sulfur Cycle Pathway of Movement Beginning in the Industrial Revolution, human activities have greatly contributed to the amount of sulfur that enters the earth's atmosphere. The Sulfur Cycle!!! Inorganic and Organic Reservoirs for the Element Inorganic Soil
Underground rocks and minerals
Emitted by Volcanic Eruptions (Sulfur Dioxide)
Combines with Lead and Mercury
Sulfate found under ocean sediments
Burning of Fossil Fuels Organic Tissues of Microorganisms
Emitted by decomposition of organic matter Chemical Reactions Involved when sulfur dioxide is in the gas phase it is oxidized by adding hydroxyl radical, it yields to HOSO2 (SO2+OH yields HOSO2)
that reaction is followed by HOSO2+O2 yields HO2+SO3
SO3 is then rapidly converted into sulfuric acid [SO3(g)+H20(l) yields H2SO4(l)]
chemical process helps produce hydrogen in the atmosphere
when sulfur and the water in the atmosphere mix they make sulfuric acid which is put into the rain and put onto the Earth's surface Sulfur is the 10th most abundant element in the universe
Yellow, brittle, tasteless, and odorless non-metallic element
Majority of the Earth's sulfur is stored underground in rocks and minerals
Contains both atmospheric and terrestrial processes
Largest deposits of sulfur in US are in Louisiana and Texas
Over 30 million tons of sulfuric acid (H2SO4) are produced every year in the US alone
Sulfur is released into the atmosphere through the burning of fossil fuels and volcanic eruptions
Sulfate salts (SO4) can be found deep under ocean sediments The burning of oil and coal to produce electrical power
Using the process of smelting to convert sulfur compounds into free metals. Ex. copper (Cu), lead (Pb), and zinc (Zn).
The action of refining petroleum, containing sulfur, in order to produce heating oil, gasoline, along with other common products.
The sulfur released into the atmosphere by humans in the forms of acidic gases such as sulfur dioxide and nitrogen oxide result in acid rain. the cycle begins with weathering of rocks releasing sulfur
the sulfur comes in contact with the air and becomes sulfate
the sulfate is taken to the plants and microorganisms and is converted into a organic from
animals them consume the organic forms moving the sulfur across the food chain
as some as the organisms die and decompose the sulfur is released again as sulfate
some enter the tissues of microorganisms
there are a variety of natural sources that emit sulfur directly into the atmosphere like volcanoes, breakdowns of organic swamps , and the evaporation of water
sulfur then settles back to the earth
a sulfur runoff occurs throughout drainage of lakes and streams eventually into the ocean within the ocean some sulfur gets cycled between the marine communities
a part of it is emitted back into the atmosphere from the sea spray
the remaining sulfur is lost in the sea depths combining with iron to form ferrous sulfide
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