Value Chain Analysis of Palm Oil Biodiesel through a Hybrid (ISO-Eco) Life Cycle Assessment Approach
Abstract
This study assesses the life-cycle impacts of palm oil biodiesel value chain in order to provide insights toward holistic sustainability awareness on the current development of bio-based energy policy. The assessment methodology was performed under a hybrid approach combining ISO-14040 Life Cycle Assessment (ISO-LCA) technique and Ecologically-based Life Cycle Assessment (Eco-LCA) methodology. The scope of this study covers all stages in palm oil biodiesel value chain or is often referred to as “cradle-to-grave” analysis. The functional unit to which all inputs and outputs were calculated is the production of 1 ton of biodiesel. For the analysis, life cycle inventory data were collected from professional databases and from scholarly articles addressing global palm oil supply chains. The inventory analysis yields a linked flow associating the land used, fresh fruit bunch (FFB), crude palm oil (CPO), per functional unit of 1 kg of palm oil biodiesel (POB). The linked flow obtained in the inventory analysis were then normalized and characterized following the characterization model formulated inISO-LCA guidelines. The aggregation of ecological inputs was classified based on the mass and energy associated to each unit process in the value chain, which are cultivation, extraction, conversion, and utilization. It is noted that compared to other unit processes, cultivation is the most crucial unit process within the whole palm oil biodiesel value chain. This study serves as a big picture about the current state of palm oil biodiesel value chain, which will be beneficial for further improving oversight of the policy making and service toward sustainable development.
References
[1] S. J. Santosa, Palm oil boom in Indonesia: from plantation to downstream products and biodiesel, Clean, 36, 453–465, (2008).
[2] S. Sumathi, S. P. Chai, and A. R. Mohamed, Utilization of oil palm as a source of renewable energy in Malaysia, Renew Sustain Energy Rev, 12, 2404–2421, (2008).
[3] L. Reijnders, Conditions for the sustainability of biomass based fuel use, Energy Policy, 34, 863–876, (2006).
[4] B. Wicke, R. Sikkema, V. Dornburg, M. Junginger, and A. Faiij, in Drivers of land use change and the role of palm oil in Indonesia and Malaysia, University of Utrecht, the Netherlands, 2008.
[5] M. Finkbeiner, E. M. Scau, A. Lehmann, and M. Traverso, Towards Life Cycle Sustainability Assessment, Sustainability, 2, 3309–3322, (2010).
[6] A. Halog and Y. Manik, Advancing integrated systems modeling framework for life cycle sustainability assessment, Sustainability, 3, 469–499, (2011).
[7] in International Organization for Standardization, ISO 14040: Environmental Management – Life Cycle Assessment, Principles and Framework, ISO, Geneva, 2006.
[8] Y. Zhang, A. Baral, and B. R. Bakshi, Accounting for ecosystem services in Life Cycle Assessment, Part II: toward an ecologically based LCA, Environ Sci Technol, 44, 2624– 2631, (2010).
[9] in Handbook on Life Cycle Assessment: Operational Guide to the ISO Standards, J. B. Guineé, Ed., Kluwer Academic, Dordrecht, 2002.
[10] J. H. Schmidt, Life Cycle Assessment of Rapeseed Oil and Palm Oil., 2007.
[11] S. Yusoff and S. B. Hansen, Feasibility study of performing an LCA on crude palm oil production in Malaysia, Int J Life Cycle Assess, 12, 50–56, (2007).
[12] R. E. Da Costa and E. E. Lora, in The energy balance in the production of palm oil biodiesel – two case studies, Federal University of Itajuba, Brazil and Colombia, 2010.
[13] B. Wicke, V. Dornburg, M. Junginger, and A. Faaij, Different palm oil production system for energy purposes and their greenhouse gas implications, Biomass Bioenergy, 28, 1322–1337, (2008).
[14] E. C. F. Japan, 2009, Palm Oil Mill Wastes-fired Power Generation Systems and CDM Project for Rural Electrification in Sumatra, Indonesia. Study Report. 59pp.
[15] A. Kumar and V. Nerella, Experimental Analysis of Exhaust Emissions from Transit Buses Fuelled with Biodiesel, Open Environ. Eng. J., 2, 81–96, (2009).
[16] Y. Manik and A. Halog, A meta-analytic review of life cycle assessment and flow analyses studies of palm oil biodiesel, Integr Environ Assess Manag, 9, 134–141, (2013).
[17] Ohio State University, Ecologically-Based Life Cycle Assessment: Accounting for the role of nature in the life cycle of economic goods and services http://resilience. eng.ohio-state.edu/ecolca-cv/, Aug 24, 2015.