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Fossil energy savings potential of sugar cane bio-energy systems

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  • Nguyen, Thu Lan T.
  • Hermansen, John E.
  • Sagisaka, Masayuki

Abstract

One important rationale for bio-energy systems is their potential to save fossil energy. Converting a conventional sugar mill into a bio-energy process plant would contribute to fossil energy savings via the extraction of renewable electricity and ethanol substituting for fossil electricity and gasoline, respectively. This paper takes a closer look at the Thai sugar industry and examines two practical approaches that will enhance fossil energy savings. The first one addresses an efficient extraction of energy in the form of electricity from the excess bagasse and cane trash. The second while proposing to convert molasses or sugar cane to ethanol stresses the use of bagasse as well as distillery spent wash to replace coal in meeting ethanol plants' energy needs. The savings potential achieved with extracting ethanol from surplus sugar versus current practice in sugar industry in Thailand amounts to 15 million barrels of oil a year. Whether the saving benefits could be fully realized, however, depends on how well the potential land use change resulting from an expansion of ethanol production is managed. The results presented serve as a useful guidance to formulate strategies that enable optimum utilization of biomass as an energy source.

Suggested Citation

  • Nguyen, Thu Lan T. & Hermansen, John E. & Sagisaka, Masayuki, 2009. "Fossil energy savings potential of sugar cane bio-energy systems," Applied Energy, Elsevier, vol. 86(Supplemen), pages 132-139, November.
    • Handle: RePEc:eee:appene:v:86:y:2009:i:supplement1:p:s132-s139
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    Cited by:

    1. Dodić, Jelena M. & Vučurović, Damjan G. & Dodić, Siniša N. & Grahovac, Jovana A. & Popov, Stevan D. & Nedeljković, Nataša M., 2012. "Kinetic modelling of batch ethanol production from sugar beet raw juice," Applied Energy, Elsevier, vol. 99(C), pages 192-197.
    2. Quintero, Julián A. & Cardona, Carlos A. & Felix, Erika & Moncada, Jonathan & Sánchez, Óscar J. & Gutiérrez, Luis F., 2012. "Techno-economic analysis of bioethanol production in Africa: Tanzania case," Energy, Elsevier, vol. 48(1), pages 442-454.
    3. García, Carlos A. & Fuentes, Alfredo & Hennecke, Anna & Riegelhaupt, Enrique & Manzini, Fabio & Masera, Omar, 2011. "Life-cycle greenhouse gas emissions and energy balances of sugarcane ethanol production in Mexico," Applied Energy, Elsevier, vol. 88(6), pages 2088-2097, June.
    4. Alejos Altamirano, Carlos Alberto & Yokoyama, Lídia & de Medeiros, José Luiz & de Queiroz Fernandes Araújo, Ofélia, 2016. "Ethylic or methylic route to soybean biodiesel? Tracking environmental answers through life cycle assessment," Applied Energy, Elsevier, vol. 184(C), pages 1246-1263.
    5. Kasivisvanathan, Harresh & Barilea, Ivan Dale U. & Ng, Denny K.S. & Tan, Raymond R., 2013. "Optimal operational adjustment in multi-functional energy systems in response to process inoperability," Applied Energy, Elsevier, vol. 102(C), pages 492-500.
    6. Md. I. Haque & Stelios Rozakis & A. Natsis & M. Borzecka-Walker & K. Mizak, 2011. "Cost effectiveness of bio-ethanol to reduce carbon dioxide emissions in Greece," Working Papers 2011-3, Agricultural University of Athens, Department Of Agricultural Economics.
    7. Khoodaruth, A. & Oree, V. & Elahee, M.K. & Clark, Woodrow W., 2017. "Exploring options for a 100% renewable energy system in Mauritius by 2050," Utilities Policy, Elsevier, vol. 44(C), pages 38-49.
    8. Grisi, Edson F. & Yusta, Jose M. & Dufo-López, Rodolfo, 2012. "Opportunity costs for bioelectricity sales in Brazilian sucro-energetic industries," Applied Energy, Elsevier, vol. 92(C), pages 860-867.
    9. García, Carlos A. & Manzini, Fabio & Islas, Jorge M., 2017. "Sustainability assessment of ethanol production from two crops in Mexico," Renewable and Sustainable Energy Reviews, Elsevier, vol. 72(C), pages 1199-1207.

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