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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Cogeneration in integrated first and second generation ethanol from sugarcane

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Author(s):
Dias, Marina O. S. [1] ; Junqueira, Tassia L. [1, 2] ; Cavalett, Otavio [1] ; Cunha, Marcelo P. [1] ; Jesus, Charles D. F. [1] ; Mantelatto, Paulo E. [1] ; Rossell, Carlos E. V. [1, 2] ; Maciel Filho, Rubens [1, 2] ; Bonomi, Antonio [1, 2]
Total Authors: 9
Affiliation:
[1] Lab Nacl Ciencia & Tecnol Bioetanol CTBE CNPEM, BR-13083970 Campinas, SP - Brazil
[2] Univ Estadual Campinas Unicamp, Fac Engn Quim, BR-13083852 Campinas, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: CHEMICAL ENGINEERING RESEARCH & DESIGN; v. 91, n. 8, SI, p. 1411-1417, AUG 2013.
Web of Science Citations: 46
Abstract

Sugarcane bagasse and trash are used as fuels in cogeneration systems for bioethanol production, supplying steam and electricity, but may also be used as feedstock for second generation ethanol. The amount of surplus lignocellulosic material used as feedstock depends on the energy consumption of the production process; residues of the pretreatment and hydrolysis operations (residual cellulose, lignin and eventually biogas from pentoses biodigestion) may be used as fuels and increase the amount of lignocellulosic material available as feedstock in hydrolysis. The configuration of the cogeneration system (boiler pressure, lignocellulosic material consumption and steam production, turbines efficiencies, among others) has a significant impact on consumption of fuel and electricity output; in the integrated first and second generation, it also affects overall ethanol production. Simulations of the integrated first and second generation ethanol production processes were carried out using Aspen Plus, comparing different configurations of the cogeneration systems and pentoses use (biodigestion and fermentation). Economic analysis shows that electricity sale can benefit second generation ethanol, even in relatively small amounts. Environmental analysis shows that the integrated first and second generation process has higher environmental impacts in most of the categories evaluated than first generation. (C) 2013 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 11/19396-6 - Simulation and evaluation of sugarcane biorefineries for the production of bioethanol and its derivatives (alcoholchemistry route)
Grantee:Marina Oliveira de Souza Dias
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 08/57873-8 - An integrated process for total bioethanol production and zero CO2 emission
Grantee:Rubens Maciel Filho
Support type: Program for Research on Bioenergy (BIOEN) - Thematic Grants