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Sustainable soy biodiesel

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  • Milazzo, M.F.
  • Spina, F.
  • Cavallaro, S.
  • Bart, J.C.J.

Abstract

The sustainability goals for soy biodiesel are to contribute to energy security by providing a domestically sourced fuel, to maintain and enhance the natzural resource base and environmental quality, to produce an economically viable fuel, and to improve the quality of life. Sustainability is more than just greenhouse gas savings. The main aspects of sustainability of soy biodiesel are environmental, economic and social effects of production and use. The intent of this paper is to identify the major sustainability concerns associated with specific resource use and the potential environmental and social consequences of widely deployed and expanded commercial production and use of soy biodiesel and to explore the opportunities for mitigating these concerns. The ecological and socio-economic consequences of large-scale renewable energy action plans for soy biodiesel are critically considered. This paper is based on the performance and prospects of soy biodiesel production on a global basis as emerging from some 30 life-cycle analyses relative to the main production areas (USA, Brazil, Argentina and PR China).

Suggested Citation

  • Milazzo, M.F. & Spina, F. & Cavallaro, S. & Bart, J.C.J., 2013. "Sustainable soy biodiesel," Renewable and Sustainable Energy Reviews, Elsevier, vol. 27(C), pages 806-852.
  • Handle: RePEc:eee:rensus:v:27:y:2013:i:c:p:806-852
    DOI: 10.1016/j.rser.2013.07.031
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    1. Frondel, Manuel & Peters, Jorg, 2007. "Biodiesel: A new Oildorado?," Energy Policy, Elsevier, vol. 35(3), pages 1675-1684, March.
    2. Oliveira, Luiz Rodrigues De & Altafin, Iara Guimaraes, 2008. "Proambiente: Uma Política De Pagamento De Serviços Ambientais No Brasil," 46th Congress, July 20-23, 2008, Rio Branco, Acre, Brazil 108077, Sociedade Brasileira de Economia, Administracao e Sociologia Rural (SOBER).
    3. Farrell, Alexander & Sperling, Daniel, 2007. "A Low-Carbon Fuel Standard for California, Part 2: Policy Analysis," Institute of Transportation Studies, Working Paper Series qt8xv635dc, Institute of Transportation Studies, UC Davis.
    4. Yang, Hong & Zhou, Yuan & Liu, Junguo, 2009. "Land and water requirements of biofuel and implications for food supply and the environment in China," Energy Policy, Elsevier, vol. 37(5), pages 1876-1885, May.
    5. Carraretto, C. & Macor, A. & Mirandola, A. & Stoppato, A. & Tonon, S., 2004. "Biodiesel as alternative fuel: Experimental analysis and energetic evaluations," Energy, Elsevier, vol. 29(12), pages 2195-2211.
    6. repec:dau:papers:123456789/14381 is not listed on IDEAS
    7. Buchholz, Thomas & Rametsteiner, Ewald & Volk, Timothy A. & Luzadis, Valerie A., 2009. "Multi Criteria Analysis for bioenergy systems assessments," Energy Policy, Elsevier, vol. 37(2), pages 484-495, February.
    8. Vera-Diaz, Maria del Carmen & Kaufmann, Robert K. & Nepstad, Daniel C. & Schlesinger, Peter, 2008. "An interdisciplinary model of soybean yield in the Amazon Basin: The climatic, edaphic, and economic determinants," Ecological Economics, Elsevier, vol. 65(2), pages 420-431, April.
    9. Horowitz, John K. & Ebel, Robert M. & Ueda, Kohei, 2010. ""No-Till" Farming Is a Growing Practice," Economic Information Bulletin 96636, United States Department of Agriculture, Economic Research Service.
    10. Markevicius, A. & Katinas, V. & Perednis, E. & Tamasauskiene, M., 2010. "Trends and sustainability criteria of the production and use of liquid biofuels," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(9), pages 3226-3231, December.
    11. van Dam, J. & Junginger, M. & Faaij, A.P.C., 2010. "From the global efforts on certification of bioenergy towards an integrated approach based on sustainable land use planning," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(9), pages 2445-2472, December.
    12. Tomei, Julia & Upham, Paul, 2009. "Argentinean soy-based biodiesel: An introduction to production and impacts," Energy Policy, Elsevier, vol. 37(10), pages 3890-3898, October.
    13. Searchinger, Timothy & Heimlich, Ralph & Houghton, R. A. & Dong, Fengxia & Elobeid, Amani & Fabiosa, Jacinto F. & Tokgoz, Simla & Hayes, Dermot J. & Yu, Hun-Hsiang, 2008. "Use of U.S. Croplands for Biofuels Increases Greenhouse Gases Through Emissions from Land-Use Change," Staff General Research Papers Archive 12881, Iowa State University, Department of Economics.
    14. João Malça & Fausto Freire, 2010. "Uncertainty Analysis in Biofuel Systems," Journal of Industrial Ecology, Yale University, vol. 14(2), pages 322-334, March.
    15. Farrell, Alexander E. & Sperling, Dan, 2007. "A Low-Carbon Fuel Standard for California, Part 1: Technical Analysis," Institute of Transportation Studies, Working Paper Series qt6j67z9w6, Institute of Transportation Studies, UC Davis.
    16. Reijnders, L., 2006. "Conditions for the sustainability of biomass based fuel use," Energy Policy, Elsevier, vol. 34(7), pages 863-876, May.
    17. Peter Abelson, 1996. "Project Appraisal and Valuation of the Environment," Palgrave Macmillan Books, Palgrave Macmillan, number 978-0-230-37474-4.
    18. Pousa, Gabriella P.A.G. & Santos, Andre L.F. & Suarez, Paulo A.Z., 2007. "History and policy of biodiesel in Brazil," Energy Policy, Elsevier, vol. 35(11), pages 5393-5398, November.
    19. Lamers, Patrick & McCormick, Kes & Hilbert, Jorge Antonio, 2008. "The emerging liquid biofuel market in Argentina: Implications for domestic demand and international trade," Energy Policy, Elsevier, vol. 36(4), pages 1479-1490, April.
    20. Milazzo, M.F. & Spina, F. & Primerano, P. & Bart, J.C.J., 2013. "Soy biodiesel pathways: Global prospects," Renewable and Sustainable Energy Reviews, Elsevier, vol. 26(C), pages 579-624.
    21. Schlegel Stephanie & Kaphengst Timo, 2007. "European Union Policy on Bioenergy and the Role of Sustainability Criteria and Certification Systems," Journal of Agricultural & Food Industrial Organization, De Gruyter, vol. 5(2), pages 1-19, December.
    22. Duffield, James A. & Shapouri, Hosein & Graboski, Michael S. & McCormick, Robert & Wilson, Richard, 1998. "U.S. Biodiesel Development: New Markets for Conventional and Genetically Modified Agricultural Products," Agricultural Economic Reports 34029, United States Department of Agriculture, Economic Research Service.
    23. Goldsmith, Peter D. & Hirsch, Rodolfo, 2006. "The Brazilian Soybean Complex," Choices: The Magazine of Food, Farm, and Resource Issues, Agricultural and Applied Economics Association, vol. 21(2), pages 1-8.
    24. Norman Myers & Russell A. Mittermeier & Cristina G. Mittermeier & Gustavo A. B. da Fonseca & Jennifer Kent, 2000. "Biodiversity hotspots for conservation priorities," Nature, Nature, vol. 403(6772), pages 853-858, February.
    25. World Commission on Environment and Development,, 1987. "Our Common Future," OUP Catalogue, Oxford University Press, number 9780192820808, Decembrie.
    26. Russi, Daniela, 2008. "An integrated assessment of a large-scale biodiesel production in Italy: Killing several birds with one stone?," Energy Policy, Elsevier, vol. 36(3), pages 1169-1180, March.
    27. Farrell, Alexander E. & Sperling, Dan, 2007. "A Low-Carbon Fuel Standard for California, Part 2: Policy Analysis," Institute of Transportation Studies, Working Paper Series qt8ng2h3x7, Institute of Transportation Studies, UC Davis.
    28. Yan, Xiaoyu & Crookes, Roy J., 2009. "Reduction potentials of energy demand and GHG emissions in China's road transport sector," Energy Policy, Elsevier, vol. 37(2), pages 658-668, February.
    29. Farrell, Alexander & Sperling, Daniel, 2007. "A Low-Carbon Fuel Standard for California, Part 1: Technical Analysis," Institute of Transportation Studies, Working Paper Series qt5245b5kx, Institute of Transportation Studies, UC Davis.
    30. Scarlat, Nicolae & Dallemand, Jean-François, 2011. "Recent developments of biofuels/bioenergy sustainability certification: A global overview," Energy Policy, Elsevier, vol. 39(3), pages 1630-1646, March.
    31. Masuda, Tadayoshi & Goldsmith, Peter D., 2009. "World Soybean Production: Area Harvested, Yield, and Long-Term Projections," International Food and Agribusiness Management Review, International Food and Agribusiness Management Association, vol. 12(4), pages 1-20, November.
    32. Hansson, P.-A. & Baky, A. & Ahlgren, S. & Bernesson, S. & Nordberg, A. & Noren, O. & Pettersson, O., 2007. "Self-sufficiency of motor fuels on organic farms - Evaluation of systems based on fuels produced in industrial-scale plants," Agricultural Systems, Elsevier, vol. 94(3), pages 704-714, June.
    33. Trigo, E. & Cap, E. & Malach, V. & Villarreal, F., 2009. "The case of zero-tillage technology in Argentina:," IFPRI discussion papers 915, International Food Policy Research Institute (IFPRI).
    34. Lence, Sergio H., 2010. "The Agricultural Sector in Argentina: Major Trends and Recent Developments," Staff General Research Papers Archive 31527, Iowa State University, Department of Economics.
    35. Sperling, Daniel & Farrell, Alexander, 2007. "A Low-Carbon Fuel Standard for California, Part 2: Policy Analysis," Institute of Transportation Studies, Working Paper Series qt5hv693r2, Institute of Transportation Studies, UC Davis.
    36. Mathews, John A. & Goldsztein, Hugo, 2009. "Capturing latecomer advantages in the adoption of biofuels: The case of Argentina," Energy Policy, Elsevier, vol. 37(1), pages 326-337, January.
    37. Dan Hammer & Robin Kraft & David Wheeler, 2009. "FORMA: Forest Monitoring for Action— Rapid Identification of Pan-tropical Deforestation Using Moderate-Resolution Remotely Sensed Data," Working Papers 192, Center for Global Development.
    38. Wu, C.Z. & Yin, X.L. & Yuan, Z.H. & Zhou, Z.Q. & Zhuang, X.S., 2010. "The development of bioenergy technology in China," Energy, Elsevier, vol. 35(11), pages 4445-4450.
    39. Farrell, Alexander E. & Sperling, Daniel & Arons, S.M. & Brandt, A.R. & Delucchi, M.A. & Eggert, A. & Farrell, A.E. & Haya, B.K. & Hughes, J. & Jenkins, B.M. & Jones, A.D. & Kammen, D.M. & Kaffka, S.R, 2007. "A Low-Carbon Fuel Standard for California Part 1: Technical Analysis," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt8zm8d3wj, Institute of Transportation Studies, UC Berkeley.
    40. Tegtmeier, Erin M & Duffy, Michael, 2004. "External Costs of Agricultural Production in the United States," Staff General Research Papers Archive 12659, Iowa State University, Department of Economics.
    41. Secchi, Silvia & Kurkalova, Lyubov A. & Gassman, Philip W. & Hart, Chad E., 2011. "Land Use Change in a Biofuels Hotspot: The Case of Iowa, Usa," Staff General Research Papers Archive 32452, Iowa State University, Department of Economics.
    42. Valdes, Constanza & Lopes, Ignez Vidigal & Lopes, Mauro de Rezende, 2009. "Brazil's Changing Food Demand Challenges the Farm Sector," Choices: The Magazine of Food, Farm, and Resource Issues, Agricultural and Applied Economics Association, vol. 24(2), pages 1-5.
    43. Kaimowitz, David & Thiele, Graham & Pacheco, Pablo, 1999. "The Effects of Structural Adjustment on Deforestation and Forest Degradation in Lowland Bolivia," World Development, Elsevier, vol. 27(3), pages 505-520, March.
    44. Soimakallio, S. & Mäkinen, T. & Ekholm, T. & Pahkala, K. & Mikkola, H. & Paappanen, T., 2009. "Greenhouse gas balances of transportation biofuels, electricity and heat generation in Finland--Dealing with the uncertainties," Energy Policy, Elsevier, vol. 37(1), pages 80-90, January.
    45. Milazzo, M.F. & Spina, F. & Vinci, A. & Espro, C. & Bart, J.C.J., 2013. "Brassica biodiesels: Past, present and future," Renewable and Sustainable Energy Reviews, Elsevier, vol. 18(C), pages 350-389.
    46. Matin Qaim & Greg Traxler, 2005. "Roundup Ready soybeans in Argentina: farm level and aggregate welfare effects," Agricultural Economics, International Association of Agricultural Economists, vol. 32(1), pages 73-86, January.
    47. Fredriksson, H. & Baky, A. & Bernesson, S. & Nordberg, A. & Noren, O. & Hansson, P.-A., 2006. "Use of on-farm produced biofuels on organic farms - Evaluation of energy balances and environmental loads for three possible fuels," Agricultural Systems, Elsevier, vol. 89(1), pages 184-203, July.
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