It is common for people in the village to recycle urine. What is the use of these recycled urine?

Abstract: it is common for people in the village to collect urine. What is the urine used for?

In high school, although flushing toilets were already used in the school, boys' toilets put several buckets to collect urine. Regularly, an uncle drove a motor tricycle and poured these buckets into the big white jars on the car. When I was a child, I had little knowledge but thought that the urine was only used to extract chemical fertilizer.

Urine can be used as fertilizer, gunpowder and pharmacy.

Only now do we know that these yellowish urine, though smelly, are a valuable resource, especially in the eyes of biologists. The main components of urine are water, while others are urea, uric acid, creatinine, ammonia and other non-protein nitrogen compounds, various inorganic salts and urinary enzymes, while pregnant women's urine also contains chorionic gonadotropin (HCG), also known as chorionic gonadotropin.

Urine can be used as fertilizer.

Urine contains a lot of nitrogen, which is an important element of plant fertilizer. Early urea fertilizer is extracted from urine. However, the urine salt is too high, can not be directly applied in the field, will cause the phenomenon of burning seedlings. It needs to be closed and fermented for about a week, and then 80% water is added to dilute it before use.

Urine can be made into gunpowder.

Because the urine contains nitrate salt, when it is mixed with carbon and sulfur, it can be made into gunpowder. In the old war years, when men fought courageously at the front, women would collect urine and put it in jars to precipitate nitrate and salt to make gunpowder. However, the content of nitrate in urine is so low that this method has long been abandoned.

Finally, the urine can be made into medicine.

This is now the most extensive and most important use of urine extraction. Urokinase, a thrombolytic drug, can be extracted from urine. Urokinase is a drug for the treatment of cardiovascular diseases, which can be used to treat fresh thromboembolic diseases such as cerebral thrombosis and acute myocardial infarction. And pregnant women because of pregnancy will secrete too much sex hormone, that is, chorionic gonadotropin (HCG), also known as chorionic gonadotropin, its level is much higher than the normal female value, and the pharmaceutical company will collect pregnant women's urine, extract it, and make drugs to treat many diseases or make test strips (that is, early pregnancy test strips).

Why do businesses spend money to collect urine from pregnant women?

This is because chorionic gonadotropin can only be extracted from pregnant women's urine, and people still have a prejudice against collecting urine, thinking that urine is waste discharged from the body is worthless, smelly and unclean. So businesses spend money to encourage pregnant women to collect urine. In order to change the status quo, it is necessary to popularize the common sense of science and put urine collection equipment in public toilets.

Here is science to promote agriculture, welcome to add attention, with you to grow knowledge.