| 主权项 |
1. A method of producing biofuel from the organic fraction of municipal wastes, comprising:
i) an extraction phase with a solvent substance of that organic fraction; ii) the separation of a first biofuel from said solvent substance; iii) obtaining a second biofuel, which is the residual waste from the extraction phase, which is hygienic, partially dried and has an energetic content greater than 15 kJ/kg; and iv) micro- or ultra-filtration of an aqueous fraction extracted after the separation of said first biofuel, to recover the suspended fraction and to give a biofuel solid fraction having an energetic content higher than 15 kJ/kg.
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