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Currently, different origin waste oils have been used mostly as animal feed, raw material for soap makers, and feed stock for fatty acid production. The existent patents and commercial processes to make fatty acids from waste oils always refers to hydrolysis and acidification steps using strong acids such as sulphuric or hydrochloridic acids, producing a mixture of fatty acids, inorganic salts, wa ...

"The availability of water resources is a key contributory factor to economic and social development, as well as being an essential pillar of environmental preservation. The most of the Mediterranean regions, with a semi-arid climate, has historically suffered from water scarcity. This has led in many cases to a strong culture in the efficient use of water and development of innovative policies an ...