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Treatment of fats and oils by meansof lipolytic bacteria in wastewater fromthe metalworking industry
The wastewater from the metal treatment and coating industries (metalworking) present content of fats and oils, due to the lubricants used by the machines in their machining process, they, when mixed with the cooling waters present components that, If not treated, they can cause an alteration in bodies of water (fats and oils). Having said the above, the present research proposes as an alternative the use of lipolytic bacteria, which through their enzymatic action degrade oily substances [1]. To do this, first, the concentration of fats and oils (mg / l) was determined with the Gravimetric method, where tests were carried out with several aliquots (Daily sampling), after which, the aliquots were inoculated with a biological strain complemented with a filter, this in order to evaluate the most effective process for the degradation of fats and oils. Finally, the removal percentages were determined in each aliquot, in which the removal of a significant percentage of fats, oils and turbidity was evidenced; demonstrating its effectiveness against the reduction of oily substances.
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