Process for the recovery of tyrosol and hydroxytyrosol from oil mill wastewaters and catalytic oxidation method in order to convert tyrosol in hydroxytyrosol
AssigneeLachifarma S.R.L. Laboratorio Chimico Farmaceutico Salentino
InventorsLuigi Villanova, Luciano Villanova, Gianluca Fasiello, Alessandro Merendino
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Abstract
A for preparing Tyrosol and/or Hydroxytyrosol from oil mill wastewaters. includes: a) Microfiltration (MF), Ultrafiltration (UF). Nanofiltration (NF) and Reverse Osmosis (RO) of the OMW; b) Separation of Tyrosol, Hydroxytyrosol and other phenolic compounds from the concentrated RO; c) Oxidation of the obtained Tyrosol to Hydroxytyrosol in the presence of methyl rhenium trioxide and of hydrogen peroxide in a protic solvent.
Claims15
A process to treat the oil mill wastewaters (OMW) and especially for the preparation of Tyrosol and/or Hydroxytyrosol, which consists of:
- a) Rough Filtration (RF), Microfiltration (MF), Ultrafiltration (UF), Nanofiltration (NF) and Reverse Osmosis (RO) of the OMW;
- b) Chromatographic separation of Tyrosol, Hydroxytyrosol and other phenolic compounds from the concentrated RO;
- c) Oxidation of the so obtained Tyrosol to Hydroxytyrosol in the presence of methylrhenium trioxide and of hydrogen peroxide in a protic solvent;
- d) Concentration and pulverization of the high molecular weight portion with the recovery of water and compounds with a high added value.
Dependencies are inferred from the claim text.