Method for removing a contaminant from a composition containing organic pollutant useful as raw material for biofuel

摘要

Method for removing a contaminant from a Biological composition containing a contaminant that includes animal Fats and vegetable oils.Comprising: (a) mixing the composition containing Biological contaminant with a First mixture of a First aqueous solution has a pH below 7 and an Acid solution to produce a composition rich in organic acid; b) centrifuge the Biological composition rich in acid pa Ra produce a poor Biological Pollutant composition rich in acids,An aqueous Waste product that contains a lot of pollutant removed from the Biological composition that contains a First component of pollutant, and then combine the Fragments, and at least 90% (by volume) of the first component of Fragments with the Biological composition. Cient in Pollutant rich in acids,And combine the remaining balance (in volume) of the first component of Fragments with the aqueous Waste product; (c) Mix composition rich in Weak acids in Biological contaminant with a Second aqueous solution to produce a Second mixture, in which the second aqueous solution It has a pH less than 7,But higher than the PH of the first aqueous solution; (d) the second mixture is centrifuged to produce a poor Biological composition in Contaminant and the first aqueous solution; and mixing the Biological composition) deficient in Contaminant with a Neutral Ph aqueous solution to produce or Na Third mixture; and (f) centrifuge the mixture to produce the Third Second aqueous solution and A CBiological omposiciu00d3n exhausted Pollutant