European renewable energy directive: Critical analysis of important default values and methods for calculating greenhouse gas (GHG) emissions of palm oil biodiesel
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The aim of this paper is to evaluate assumptions and data used in calculations related to palm oil produced for biodiesel production relative to the European Renewable Energy Directive (EU-RED). The intent of this paper is not to review all assumptions and data, but rather to evaluate whether the methodology is applied in a consistent way and whether current default values address relevant management practices of palm oil production systems.
The GHG calculation method provided in Annex V of the EU-RED was used to calculate the GHG-emissions from palm oil production systems. Moreover, the internal nitrogen recycling on the plantation was calculated based on monitoring data in North Sumatra.
Results and discussion
A calculation methodology is detailed in Annex V of the EU-RED. Some important aspects necessary to calculate the GHG emission savings correctly are insufficiently considered, e.g.:
• “Nitrogen recycling” within the plantation due to fronds remaining on the plantation is ignored. The associated organic N-input to the plantation and the resulting nitrous oxide emissions is not considered within the calculations, despite crop residues being taken into account for annual crops in the BIOGRACE tool.
• The calculation of GHG-emissions from residue and waste water treatment is inappropriately implemented despite being a hot-spot for GHG emissions within the life cycle of palm oil and palm oil biodiesel. Additionally, no distinction is made between palm oil and palm kernel oil even though palm kernel oil is rarely used for biodiesel production.
• The allocation procedure does not address the most relevant oil mill management practices. Palm oil mills produce crude palm oil (CPO) in addition either nuts or palm kernels and nut shells. In the first case, the nuts would be treated as co-products and upstream emissions would be allocated based on the energy content; in the second case the kernels would be treated as co-products while the shelöls are considered as waste without upstream emissions. This has a significant impact on the resulst or GHG savings, respectively.
• It is not specified whether indirect GHG emissions from nitrogen oxide emission from the heat and power unit of palm oil mills should be taken into account.
Conclusions and recommendations
In conclusion, the existing calculation methodology described in Annex V of the EU-RED and default values are insufficient for calculating the real GHG emission savings from palm oil and palm oil biodiesel. The current default values do not reflect relevant management practices. Additionally, they protect poor management practices, such as the disposal of empty fruit bunches (EFB), and lead to an overestimation of GHG savings from palm oil biodiesel. A default value for EFB disposal must be introduced because resulting GHG emissions are substantial. Organic nitrogen from fronds must be taken into account when calculating real GHG savings from palm oil biodiesel. Further, more conservative data for FFB yield and fugitive emissions from wastewater treatment should be introduced in order to foster environmental friendly management options. Moreover, credits for bioenergy production from crop residues should be allowed in order to foster the mobilization of currently unused biomass.
KeywordsAllocation factor FFB yield Fugitive methane emission Organic nitrogen
This research was supported by funding from the International Bureau of the Federal Ministry of Education and Research in Germany (Project ID: 7017). We would like to thank the anonymous reviewers for their constructive criticism that has helped to improve the manuscript.
- Achten WMJ, Vandenbempt P, Almeida J, Mathijs E, Muys B (2010) Life cycle assessment of a palm oil system with simultaneous production of biodiesel and cooking oil in cameroon. Environ Sci Technol 44(12):4809–4815. doi: 10.1021/es100067p
- Adjei-Nsiah S, Sakyi-Dawson O, Kuyper TW (2012) Exploring opportunities for enhancing innovation in agriculture: the case of oil palm production in Ghana. J Agric Sci 4(10):212–223Google Scholar
- Agyei-Dwarko D, G Okyere-Boateng (2010) Selection of New Standard Crosses for the Oil Palm (Elaeis Guineensis J.) Third Cycle of Selection. J Ghana Sci Assoc 12(1)Google Scholar
- Bringezu S (2009) Assessing Biofuels. ISBN: 978-92-807-3052-4Google Scholar
- Chavalparit O (2003) Industrial ecosystems in the crude palm oil industry in Thailand. In: Inrefagits Working Conference, p 1046Google Scholar
- Chen SS (2008) The LCA approach to illustrate palm Oil's sustainability advantage. In: International Palm Oil Sustainability Conference, SabahGoogle Scholar
- Dumelin E, Rao V, Smith BG, Corley RH (2002) Sustainable Palm oil agriculture - The Unilever initiative. International Palm Oil Conference, Nusa Dua, pp 226–237Google Scholar
- EC (2003) Directive 2003/30/EC of the European parlamen and of the council of 8 May 2003 on the promotion of the use of biofuels or other renewable fuels for transportGoogle Scholar
- EC (2012) Proposal for a Directive of the European parliament and of the council amending Directive 98/70/EC relating to the quality of petrol and diesel fuels and amending Directive 2009/28/EC on the promotion of the use of energy from renewable sourcesGoogle Scholar
- Edward C, Leonard EGP, Cahn A (1999) Proceedings of the world conference on palm and coconut oils for the 21st century. The American Oil Chemists Society, DenpasarGoogle Scholar
- Edwards R (2007) Well-to-Wheels analysis of future automotive fuels and powertrains on the European context. EU JRCGoogle Scholar
- EU (2009) Directive 2009/28/EC of the European parliament and of the council of 23 April 2009 on the promotion of the use of energy from renewable sources and amending and subsequently repealing Directives 2001/77/EC and 2003/30/EC.Google Scholar
- FNR (2009) Biogas-Messprogramm IIGoogle Scholar
- Goh KJ (2005) Fertilizer recommendation system for oil palm: estimating the fertilizer rates. In: Chew PS, Tan YP (eds) MOSTA Best Practice Workshops - Agronomy and Crop Management, Malaysian Oil Scientists and Technologists Assosciation, pp 253–268Google Scholar
- Henson IE (1999) Comparative ecophysiology of oil palm and tropical rain forest In: Oil palm and the environment. Malaysian Oil Palm Growers’ Council, Kuala LumpurGoogle Scholar
- Henson IR, Ruiz R, Romero HM (2011) The growth of the oil palm industry in Columbia. J Palm Oil Res 23:1121–1128Google Scholar
- Idris MSH (2003) Fattening of beef cattle with oil palm by-products – Oil palm frond based diets. In: Forages and feed resources in commercial livestock production systems. 8th meeting of the regional working group on grazing and feed resources for Southeast Asia, Kuala Lumpur, pp 71–75Google Scholar
- IPCC (2006a) IPCC Guidelines for National Greenhouse Gas Inventories (Agriculture)Google Scholar
- IPCC (2006b) Waste (Vol.5, Chapter 4). Available at: http://www.ipccnggip.iges.or.jp/public/
- Jungbluth N, Chudacoff M, Dauriat A, Dinkel F, Doka G, Emmenegger F, Gnansounou E, Kljun N, Schleiss K, Spielmann M, Stettler C, Sutter J (2007) Life cycle inventories of bioenergy. vol ecoinvent report No. 17. Swiss Centre for Life Cycle Inventories, DübendorfGoogle Scholar
- Kaewmai R, H-Kittikun A, Suksaroj C, Musikavong C (2013) Alternative Technologies for the Reduction of Greenhouse Gas Emissions from Palm Oil Mills in Thailand. Environ Sci Technol. doi: 10.1021/es4020585
- Kamahara H, Hasanudin U, Widiyanto A, Tachibana R, Atsuta Y, Goto N, Daimon H, Fujie K (2010) Improvement potential for net energy balance of biodiesel derived from palm oil: A case study from Indonesian practice. Biomass and Bioenergy. doi: 10.1016/j.biombioe.2010.07.014
- Khalid H, Zin ZZ, Anderson JM (2000) Decomposition processes and nutrient release patterns of oil palm residues. J Oil Palm Res 12(1):46–63Google Scholar
- Kittikun HP, Prasertsan P, Srisuwan G, Krause A (2000) Environmental management for palm oil mill. In: Internet Conference on Material Flow Analysis of Integrated Bio-SystemGoogle Scholar
- Malins C (2012) Comments of the ICCT on EPA palm oil pathway NODA. International Council on Clean Transportation, Washington San FranciscoGoogle Scholar
- Melling L, Hatano R, Goh KJ (2005) Global warming potential from soils in tropical peatland of Sarawak, Malaysia. Phyton-Annales Rei Botanicae 45(4):275–284Google Scholar
- Melling L, Hatano R, Goh KJ, Inioue T (2006) Greenhouse gas fluxes from three ecosystems in tropical peatland of Sarawak, Malaysia. Paper presented at the 18th World Congress of Soil Science, PhiladelphiaGoogle Scholar
- Melling L, Goh KJ, Bouvais C, Hatano R (2010) Carbon flow and budget in a young mature oil palm agroecosystem on deep tropical peat. http://www.geog.le.ac.uk/carbopeat/media/pdf/yogyapapers/p43.pdf.
- Ng SK, Thamboo S (1967) Nutrient content of oil palms in Malaya. Malays Agric J 46:3–45Google Scholar
- Ng S, Thamboo S, De Souza P (1968) Nutrient content of oil palms in Malaya II. Nutrient in vegetative tissues. Malays Agric J 46:332–391Google Scholar
- O’Hare M, Delucchi M, Edwards R, Fritsche U, Gibbs H, Hertel T, Hill J, Kammen D, Laborde D, Marelli L, Mulligan D, Plevin R, Tyner W (2011) Comment on “Indirect land use change for biofuels: testing predictions and improving analytical methodologies” by Kim and Dale: statistical reliability and the definition of the indirect land use change (iLUC) issue. Biomass Bioenergy 35(10):4485–4487. doi: 10.1016/j.biombioe.2011.08.004 CrossRefGoogle Scholar
- Pleanjai S, Gheewala S, Garivait S (2004) Environmental evaluation of biodiesel production from palm oil in a life cycle perspective. The Joint International Confernce on “Sustainable Energy and Environment (SEE)”, Hua Tin, pp 604–608Google Scholar
- Rettenmaier N, Reinhardt G, Muench J, Gaertner S (2007) Datenprojekt “Nachwachsende Rohstoffe”. IFEU, Heidelberg-KarlsruheGoogle Scholar
- Schmidt JH (2004) The importance of system boundaries for LCA on large material flows of vegetable oils. Fourth World SETAC Congress, PortlandGoogle Scholar
- Subramaniam V, Ngan MA, May CY, Sulaiman NMN (2008) Environmental performance of the milling process of malaysian palm Oil using the life cycle assessment approach. Am J Environ Sci 208(4):310–315Google Scholar
- Tarmizi AM, Mohd Tayeb D (2006) Nutrient demands of Tenera oil palm planted on islands of Malaysia. J Oil Palm Res 18(June):204–209Google Scholar
- Tarmizi AM, Haron K, Omar W (2006) Environmental aspects of agronomic practices of oil palm plantation. International Oil Palm Conference, Nusa Dua, pp 60–77Google Scholar
- Thamsiriroj T, Murphy JD (2009) Is it better to import palm oil from Thailand to produce biodiesel in Ireland than to produce biodiesel from indigenous Irish rape seed? Appl Energy 86(5):595–604Google Scholar
- Thamsiriroj T, Murphy JD (2010b) How much of the target for biofuels can be met by biodiesel generated from residues in Ireland? Fuel 89(11):3579–3589Google Scholar
- UNFCC (2010) Indicative simplified baseline and monitoring methodologies for selected small-scale CDM project activity categoriesGoogle Scholar
- Wan Zahari M, Sato J, Furuichi S, Azizan AR, Yunus M (2003) Commercial processing of oil palm fronds feed in Malaysia. In: Forages and feed resources in commercial livestock production systems. 8th meeting of the regional working group on grazing and feed resources for Southeast Asia, Kuala Lumpur, Malaysia. pp 59–65Google Scholar
- Wicke B, Dornburg V, Faaij A, Junginger M (2007) A greenhouse gas balance of electricity production from co-firing palm oil products from Malaysia. vol Final Report. University Utrecht, Copernicus Institute, Department of Science, Technology and SocietyGoogle Scholar
- Wulfert K, Darnoko D, Tobing PL, Yulisari R, Guritno P (2002) Treatment of POME in anaerobic fixed bed digesters. In: International Oil Palm Conference IOPC, pp 265–275Google Scholar