Energy Recovery of the Solid Waste of the Olive Oil Industries- LCA Analysis and Carbon Footprint Assessment

Renewable energy technologies contribute to the mitigation of climate change impacts through reduction in the emission of greenhouse gases (GHG) such as carbon dioxide. In this paper, a power plant located in Italy and fed with waste deriving from the olive oil industries is considered. The de-oiled pomace is characterised by lower caloric value equal to 4000 kcal/kg, by low content of nitrogen and sulphur and by the absence of heavy metals. A plant for the production of energy from biomass (de-oiled pomace and waste wood) is analyzed through a Life Cycle Assessment (LCA) approach. The carbon dioxide equivalent (kgCO2eq) emitted into the atmosphere is equal to 0.0597 kgCO2eq /kWh. The GHG emissions have been compared with those of a plant for energy production that uses refuse derived fuel (RDF) and with those of one that uses coal. The environmental benefits are quantified and the possibilities to develop the use of the pomace-to-energy at national level are estimated.

[1]  Antonio Casimiro Caputo,et al.  Disposal of by-products in olive oil industry: waste-to-energy solutions , 2003 .

[2]  Jiří Jaromír Klemeš,et al.  The Environmental Performance Strategy Map: an integrated LCA approach to support the strategic decision-making process , 2009 .

[3]  Keat Teong Lee,et al.  Life cycle assessment of palm biodiesel: Revealing facts and benefits for sustainability , 2009 .

[4]  Sanderine Nonhebel,et al.  Energy from agricultural residues and consequences for land requirements for food production , 2007 .

[5]  Francesco Cherubini,et al.  Energy- and greenhouse gas-based LCA of biofuel and bioenergy systems: Key issues, ranges and recommendations , 2009 .

[6]  M. Giugliano,et al.  LCA of domestic and centralized biomass combustion: The case of Lombardy (Italy). , 2010 .

[7]  A. R. Celma,et al.  Waste-to-energy possibilities for industrial olive and grape by-products in Extremadura , 2007 .

[8]  Michela Gallo,et al.  A survey of life cycle approaches in waste management , 2009 .

[9]  A. Tekin,et al.  Biogas production from olive pomace , 2000 .

[10]  Francesco Cherubini,et al.  GHG balances of bioenergy systems – Overview of key steps in the production chain and methodological concerns , 2010 .

[11]  I. Montero,et al.  Combined combustion of various phases of olive wastes in a conventional combustor , 2007 .

[12]  A. Seth,et al.  Global climate change: An introduction and results from the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4) , 2007 .

[13]  A Roig,et al.  An overview on olive mill wastes and their valorisation methods. , 2006, Waste management.

[14]  Gjalt Huppes,et al.  Life cycle assessment and life cycle costing of bioethanol from sugarcane in Brazil , 2009 .

[15]  Andrea Corti,et al.  Life cycle assessment (LCA) of an integrated biomass gasification combined cycle IBGCC with CO2 removal , 2005 .

[16]  Göran Finnveden,et al.  Life cycle assessment of energy from solid waste—part 1: general methodology and results , 2005 .

[17]  M. Avraamides,et al.  Resource consumption and emissions from olive oil production: a life cycle inventory case study in Cyprus , 2008 .

[18]  S. Rojas,et al.  Emissions from thermal degradation of pellets with different contents of olive waste and forest residues , 2010 .

[19]  Reinout Heijungs,et al.  A greenhouse gas indicator for bioenergy: some theoretical issues with practical implications , 2009 .

[20]  Wim Turkenburg,et al.  Exploration of the ranges of the global potential of biomass for energy , 2003 .

[21]  Hans-Jürgen Dr. Klüppel,et al.  The Revision of ISO Standards 14040-3 - ISO 14040: Environmental management – Life cycle assessment – Principles and framework - ISO 14044: Environmental management – Life cycle assessment – Requirements and guidelines , 2005 .

[22]  Maria Laura Mastellone,et al.  THE ENVIRONMENTAL PERFORMANCE OF ALTERNATIVE SOLID WASTE MANAGEMENT OPTIONS: A LIFE CYCLE ASSESSMENT STUDY , 2003 .

[23]  M Masghouni,et al.  Energy applications of olive-oil industry by-products: - I. The exhaust foot cake , 2000 .