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Phosporus Cycle
2
The Phosphorus Cycle
Carlos, Amina , Houston, Mateo
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What is The Phosphorus Cycle?
Introduction
The phosphorus cycle is the biogeochemical cycle that describes the movement of phosphorus through the lithosphere, hydrosphere, and biosphere. Unlike other biogeochemical cycles, the atmosphere does not play a significant role in the movement of phosphorus. Phosporus is an essential element for life here on Earth, so this cycle is essential for survival.
Phosphate
Phosphorus is a key nutrient for living organisms. Not only is it in our DNA. RNA and Phosphobilipids, but it also is present in the supportive compounds of our bones.
The Cycle
The Gist
Phosphorus In Nature
Rain and weathering cause rocks to release phosphate ions.
Inorganic phosphate distributes in soils and water.
Plants take up the inorganic phosphate from the soil. When plants are eaten by animals the phosphate goes into organic molecule like the DNA. When the animal dies it decays and the phosphate is returned back to the soil.
Continued
In the soil the organic forms of phosphate are made available to plants by bacteria that break down organic matter to inorganic forms of phosphorus.
Phosphorus can end up in waterways and oceans and can be absorbed in various sediments throughout time.
When an organic life form dies, its phosphate gets redistributed in the environment.
During the process in which animals release Phosporus which they gained from eating plants, a chemical reaction called decomposition
The Chemical Reactions of the Cycle
When animals die and are buried, they release phoshorus through a chemical reaction called decompostion. When animals die, the bacteria inside their intestines are still alive. The bacteria break free of the body. " The intestines are packed with millions of micro-organisms that don't die with the person. Therefore these organisms start the job of decomposition immediately by breaking down the dead cells of the intestines. As the bacteria starts to eat through the gut the first sign is usually a greenish patch on the lower right belly which also blisters. Then special bacteria called clostridia and coliforms start to invade other parts of the body and putrefaction spreads across the stomach before travelling down the thighs and across the chest." (M. J Wood, n/a, p.1) This process produces a foul smell due to the rotting, which also shows evidence of a chemical reaction.
Chemical Reactions
2PH3-> 2P+3H2
AB -> A+B
Erosion of Rocks
Phosphorus is found primarily in rocks, so the erosion of rocks is the primary way that phosphorus is released into the enviornment. Weathering in many different forms wears away phosphorus from the rocks, which is then deposited in the soil.
CO2 + H2O → H2CO3
(carbon dioxide + water--->carbonic acid)
CaCO3 + H2CO3 → Ca2+ + 2HCO3-
(calcite + carbonic acid--->calcium + bicarbonate)
Works Referenced
Bibliography
Water Treatment Solutions. (n.d.). Retrieved April 15, 2018, from https://www.lenntech.com/periodic/elements/p.htm
http://www.memorialpages.co.uk/articles/decomposition.php
The phosphorus cycle. (n.d.). Retrieved April 16, 2018, from https://www.sciencelearn.org.nz/resources/961-the-phosphorus-cycle
The phosphorus cycle. (n.d.). Retrieved April 16, 2018, from https://www.sciencelearn.org.nz/resources/961-the-phosphorus-cycle