Urine: Difference between revisions
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* [[Urea]], approximately 9.3g (0.66 mol) per liter. | * [[Urea]], approximately 9.3g (0.66 mol) per liter. | ||
* [[Salt]] 3g per liter | * [[Salt]] 3g per liter | ||
* [[Phosphorus]], 0.4 to 1.0 grams (0.013-0. | * [[Phosphorus]], 0.4 to 1.0 grams (0.013-0.032 mol) per liter. | ||
*: '''NB:''' 85% phosphoric acid is 15.2 molar, so between 500 and 1200L of urine would be required to make 1L of that acid. | *: '''NB:''' 85% phosphoric acid is 15.2 molar, so between 500 and 1200L of urine would be required to make 1L of that acid. | ||
Revision as of 10:17, 7 July 2019
A suprisingly useful aqueous mixture of several compounds.
Production
Production of urine is a natural process for most animals.
Components
The major products of interest derived from human urine are:
- Water
- Urea, approximately 9.3g (0.66 mol) per liter.
- Salt 3g per liter
- Phosphorus, 0.4 to 1.0 grams (0.013-0.032 mol) per liter.
- NB: 85% phosphoric acid is 15.2 molar, so between 500 and 1200L of urine would be required to make 1L of that acid.
Other animals' urine may also include:
- Ammonia
- Uric acid
Maximizing urea content
In the ammonia production from urine process, it is of value to maxiomize the urea content of urine. Simple ways to do this include:
- Collect urine first thing in the morning - urea is produced during the night, but is not diluted by additional water (not) consumed while you sleep.
- Collect urine within 36 hours of heavy excercise
- Collect urine from humans eating large amounts of protein rather than carbohydrates.
Obviously all of these could be done simultaneously, given the right diet, excercise, and sleeping schedule.
See Also
- Composition and Concentrative Properties of Human Urine
- Composition and Concentrative Properties of Human Urine (not fulltext)