ORGANIC MATERIAL OF INANIMATE BODIES BREAK DOWN INACTIVATE PROCESS, IN AEROBIC ENVIRONMENT, DRIVEN BY HEAT AND NEGATIVE PRESSURE, using airtight cavities, submitted to negative pressure for break down acceleration and liquid vaporization, maximized by heat generated during the break down process, naturally exothermic, for the transformation of cadaverous liquid, generated during inanimate bodies of human and animals break down, highly toxic and pollutant, in clean gases, breathing and not pollutant, characterized in that the process comprises: - at first step, the air filtering by an air filtering system, that obstruct dust and contaminating elements; - at second step, the transportation of fresh and filtered air by a first tube of cavity access, where volume of gases and speed of air removed from inside of the cavity are determined in way that its internal pressure keeps negative to keep the break down accelerated, however the pressure has small value to avoid humidity and light organic material flow; - at third step, the irradiation of natural heat from the break down and the negative pressure mechanically made by an extractor fan; - at fourth step, the conduction, by second tubes, of gases generated inside of cavity, to be removed by a gases inactivate equipment comprising a washing tower, which determines gases speed according to the desired negative pressure inside of the cavity, whereby the dimension of said second tubes is determined by its length and quantity of cavities, with gases removal speed bigger than in the air filtered tube and gases speed and negative pressure dynamically controlled; - at fifth step, the transformation of pollutant and contaminating gases inside of said gases inactivate equipment, being inserted inside a first chamber and obligatorily flowing to a second chamber, through an area within an absorption column, containing obstacles, like Raschig rings, or other kind of material or devices that increases the contact area between the gases and an alkaline liquid, being a caustic soda solution, wherein a chemical pump that is responsible for the circulation of the alkaline liquid between the chambers and throwing it through one or more small showers in the second chamber with the obstacles, guaranteeing total efficiency on chemical changes, because the negative pressure kept inside of the equipment allows the alkaline liquid, broke down by the obstacles or Raschig rings, to be pulverized, in form of clouds, increasing the contact area with gases, making the procedure highly efficient; - at sixth step the removal of inactivate gases from said gases inactivate equipment, by the extractor fan, responsible for the negative pressure, and its thrown to the atmosphere, as breathing gases, through an exit. - at first step, the air filtering by an air filtering system, that obstruct dust and contaminating elements; - at second step, the transportation of fresh and filtered air by a first tube of cavity access, where volume of gases and speed of air removed from inside of the cavity are determined in way that its internal pressure keeps negative to keep the break down accelerated, however the pressure has small value to avoid humidity and light organic material flow; - at third step, the irradiation of natural heat from the break down and the negative pressure mechanically made by an extractor fan; - at fourth step, the conduction, by second tubes, of gases generated inside of cavity, to be removed by a gases inactivate equipment comprising a washing tower, which determines gases speed according to the desired negative pressure inside of the cavity, whereby the dimension of said second tubes is determined by its length and quantity of cavities, with gases removal speed bigger than in the air filtered tube and gases speed and negative pressure dynamically controlled; - at fifth step, the transformation of pollutant and contaminating gases inside of said gases inactivate equipment, being inserted inside a first chamber and obligatorily flowing to a second chamber, through an area within an absorption column, containing obstacles, like Raschig rings, or other kind of material or devices that increases the contact area between the gases and an alkaline liquid, being a caustic soda solution, wherein a chemical pump that is responsible for the circulation of the alkaline liquid between the chambers and throwing it through one or more small showers in the second chamber with the obstacles, guaranteeing total efficiency on chemical changes, because the negative pressure kept inside of the equipment allows the alkaline liquid, broke down by the obstacles or Raschig rings, to be pulverized, in form of clouds, increasing the contact area with gases, making the procedure highly efficient; - at sixth step the removal of inactivate gases from said gases inactivate equipment, by the extractor fan, responsible for the negative pressure, and its thrown to the atmosphere, as breathing gases, through an exit.