| Summary: | Almond cultivation and processing industry generate 3 main types of residues: hull, shell and skin, representing 80% (w/w) of the whole almond fruit. Presently, the shell finds use as energy source being commercialized at a cost of 0.11 €/kg. Hull and skin have no economic value. Apart from the hull, that its use needs a strategy for its recover, both shell and skin can be easily recovered at the almond processing industries and are, therefore, the more attractive residues to develop novel applications. In this work the use of almond shell as a raw material to produce polyols through oxypropylation was studied.
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