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The notion of tannery , also mentioned as tannery , refers to site where the process that allows to transform the skin of a dead animal in leather . This procedure is performed in several stages.

The first task carried out in a tannery is the cleaning of the skin. This involves removing hair, fat and meat with the help of chemical agents. Then you have to tan the skin with tannin (vegetable tanning) or chrome (mineral tanning). The third step is the retanning , which includes tincture. Finally the skin is dried, covered and washed to obtain the final product (leather).

Thanks to all these activities that are carried out in the tannery, a material that can be preserved in time is obtained since does not rot . Yes, however, the skin It does not turn into leather, soon the rot starts.

It is important to mention that tanneries, because of the processes they perform and the substances they use, are pollutants . Its activity generates gaseous emissions and produces multiple wastes. Those who work in these places can also suffer from dermatitis and other problems of Health by being in contact with the skins and chemicals.

Specifically, we can state that the work carried out in the tanneries brings about a series of consequences that are adverse for the environment in general. We are referring to the following:
-In the work that is undertaken to tan the skins harmful substances are released such as both hydrogen sulfide and dust.
-Of course, solid waste is generated such as animal fats, meat from that, skin cuts ...
-In the same way, we cannot forget that there is also the gaseous emission that is the result of work with ammonia. Emissions that, in addition to annoying the smell they give off, can damage the human being and the natural environment.
-Not less relevant is that they can lead to a series of wastewater that, among other things, is full of feces, urine and substances that come from both the animal itself and the chemicals that are used.

To all this we must add that there is a risk that, due to some problem or unforeseen situation, the workers who carry out their work in a tannery may be harmed by their health. And it is that coming into contact with certain gases or liquid products can lead them to suffer conditions, especially in their skin. Hence, it is essential that they perform their tasks with the costumes and the necessary equipment to prevent such situations, such as masks, glasses and even suitable gloves.

Many non-governmental organizations, in fact, have denounced tanneries for contaminating the environment . An investigation of Greenpeace in Argentina , for example, warns that about 50% of the pollution that affects the basin Matanza-Riachuelo It comes from tanneries in the area, which employ about 500 kilograms of chemical agents to process a ton of raw leather.

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