In this study we work with the Life Cycle Assessment (LCA),is applied with the approach known as “from the cradle to the cradle” to the production of biodiesel from castor oil the objective with of to identify the phases of the life cycle which more affect the environment and make the respective environmental profile.” From the cradle to the cradle” allowed us to know the necessary time of recovery of terrain, considering that one percentage of the discharges residues to the environment are fixed by the nature thank to the different biogeochemical cycles. The phases of the life cycle assessment (LCA) are: cultivation and integration of the cycles biogeochemical, oil extraction, the industrial transformation, the use as biofuel and the residue disposal. The categories of impact studied were: change climatic, acidification, eutrophication, photochemical smog formation, respiratory effects and non-renewable energy, identifying relevant phases related with the consumption energy and emissions to the environment.