Charred olive stones: experimental and archaeological evidence for recognizing olive processing residues used as fuel

  title={Charred olive stones: experimental and archaeological evidence for recognizing olive processing residues used as fuel},
  author={Freek Braadbaart and Elena Marinova and Anaya Sarpaki},
  journal={Vegetation History and Archaeobotany},
Abstract After extracting oil from olives a residue is left usually referred to as the olive oil processing residue (OPR). This study explores the way in which ancient societies may have used OPR as fuel for fires to generate heat and the various issues that are related to the residues of this fuel. After drying, the high heating value and structure of OPR makes it an excellent and efficient fuel. Upgrading OPR further, through thermal conversion or charring, provides an even more efficient… Expand
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