Disposal of by-products in olive oil industry: waste-to-energy solutions

• Published in: Applied thermal engineering Vol. 23; no. 2; pp. 197 - 214
• Main Authors: Caputo, Antonio C., Scacchia, Federica, Pelagagge, Pacifico M.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.02.2003; Elsevier
• Subjects: Applied sciences; Biomass; Energy; Exact sciences and technology; Natural energy; Olive husk; Olive mill wastewater; Olive processing; Waste disposal; Waste to energy systems; Waste to energy systems; Olive mill wastewater; Olive husk; Waste disposal; Olive processing; Economic analysis; Heat treatment; Waste treatment; Energy recovery; Combustion; Gasification; Biomass; Olive oil; By product; Waste water
• ISSN: 1359-4311
• DOI: 10.1016/S1359-4311(02)00173-4

Olive oil production industry is characterized by relevant amounts of liquid and solid by-products [olive mill wastewater (OMW) and olive husk (OH)], and by economical, technical and organizational constraints that make difficult the adoption of environmentally sustainable waste disposal approaches. In this context, waste treatment technologies aimed at energy recovery represent an interesting alternative. In the paper, a technical and economical analysis of thermal disposal plant solutions with energy recovery has been carried out. The considered plants enable the combined treatment of OMW and OH which, although penalizes the energy recovery, proves to be feasible and profitable in a future legislative scenario when stricter limitation on OMW disposal will force oil producers to bear high disposal costs. Results are compared by using economic performance measures, including revenues from produced energy and avoided disposal costs. A sensitivity and risk analysis is also performed in order to assess the economic profitability of the proposed solutions.