A New Proposal Of Cellulosic Ethanol To Boost Sugarcane Biorefineries: Techno-economic Evaluation

Article English OPEN
Albarelli J.Q. ; Ensinas A.V. ; Silva M.A. (2014)
  • Publisher: Hindawi Publishing Corporation
  • Journal: (issn: 1687-806X, eissn: 1687-8078)
  • Related identifiers: doi: 10.1155/2014/537408
  • Subject: TP155-156 | Article Subject | Chemical engineering

Commercial simulator Aspen Plus was used to simulate a biorefinery producing ethanol from sugarcane juice and second generation ethanol production using bagasse fine fraction composed of parenchyma cells (P-fraction). Liquid hot water and steam explosion pretreatment technologies were evaluated. The processes were thermal and water integrated and compared to a biorefinery producing ethanol from juice and sugarcane bagasse. The results indicated that after thermal and water integration, the evaluated processes were self-sufficient in energy demand, being able to sell the surplus electricity to the grid, and presented water intake inside the environmental limit for São Paulo State, Brazil. The processes that evaluated the use of the bagasse fine fraction presented higher economic results compared with the use of the entire bagasse. Even though, due to the high enzyme costs, the payback calculated for the biorefineries were higher than 8 years for all cases that considered second generation ethanol and the net present value for the investment was negative. The reduction on the enzyme load, in a way that the conversion rates could be maintained, is the limiting factor to make second generation ethanol competitive with the most immediate uses of bagasse: fuel for the cogeneration system to surplus electricity production. © 2014 Juliana Q. Albarelli et al.
  • References (38)
    38 references, page 1 of 4

    Hofsetz, K., Silva, M. A.. Brazilian sugarcane bagasse: energy and non-energy consumption. Biomass and Bioenergy. 2012; 46: 564-573

    CTBE, null.

    CTC, null.

    Dedini S/A Indústrias de Base, null.

    Raízen, null.

    Graalbio, null. GraalBio cellulosic ethanol production project.

    Furlan, F. F., Costa, C. B. B., Fonseca, G. D. C., Soares, R. D. P., Secchi, A. R., Cruz, A. J. G. D., Giordano, R. D. C.. Assessing the production of first and second generation bioethanol from sugarcane through the integration of global optimization and process detailed modeling. Computers & Chemical Engineering. 2012; 43: 1-9

    Dias, M. O. S., Cunha, M. P., Jesus, C. D. F., Rocha, G. J. M., Pradella, J. G. C., Rossell, C. E. V., Maciel Filho, R., Bonomi, A.. Second generation ethanol in Brazil: can it compete with electricity production?. Bioresource Technology. 2011; 102 (19): 8964-8971

    Albarelli, J. Q., Ensinas, A. V., Silva, M. A.. Product diversification to enhance economic viability of second generation ethanol production in Brazil: the case of the sugar and ethanol joint production. Chemical Engineering Research and Design. 2013

    Ensinas, A. V., Codina, V., Marechal, F., Albarelli, J., Silva, M. A.. Thermo-economic optimization of integrated first and second generation sugarcane ethanol plant. Chemical Engineering Transactions. 2013; 35: 523-528

  • Metrics
    1
    views in OpenAIRE
    0
    views in local repository
    0
    downloads in local repository