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Vlahopoulou, Gina Petretto, Giacomo Luigi Garroni, Sebastiano Piga, Carlo Mannu, Alberto 2021-05-24T10:55:54Z 2021-05-24T10:55:54Z 2018-03 0145-8892 http://hdl.handle.net/10259/5781 10.1111/jfpp.13533 Recycling of waste cooking oil represents a source of convenient raw materials for industry. Within the large number of products derived from the treatment of waste cooking oil, eco-friendly lubricants grown in importance during the last years. Recycling process for such application consists usually of acid or basic degumming followed by a filtration step. The effect of the specific type of acid degumming on the density and on the flash point of the recycled oil was evaluated employing full factorial design. Two mathematical equations were derived which allow to estimate respectively the density and the flash point of the recycled oil, depending on the: (a) pH of the washing solution, (b) oil/water ratio, (c) temperature of the system, and (d) the stirring time. application/pdf eng Wiley Journal of Food Processing and Preservation. 2018, V. 42, n. 3, e13533 https://doi.org/10.1111/jfpp.13533 Química Chemistry Variation of density and flash point in acid degummed waste cooking oil info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/openAccess Journal of Food Processing and Preservation 42 3 e13533