Animal fat was extracted from fleshings, a residue from the leather industry, by a two step procedure. First the fleshings are mixed with water (60 ºC) and then the fat rich phase obtained is treated with n-hexane to extract the fat and leave the proteic residue. This fat presents a high acid value and therefore the direct transesterification to biodiesel with an alkaline catalyst was not possible. A pre-treatm...
Financiadores do RCAAP | |||||||
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