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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.)

Thermo-economic and environmental comparison of supercritical water and enzymatic hydrolysis of sugarcane bagasse in a biorefinery concept

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Author(s):
Albarelli, Juliana Q. [1, 2] ; Santos, Diego T. [1, 2] ; Ensinas, Adriano V. [3] ; Marechal, Francois [4] ; Mato, Fidel A. [2] ; Cocero, Maria J. [2] ; Meireles, M. Angela A. [1]
Total Authors: 7
Affiliation:
[1] Univ Estadual Campinas, Cidade Univ Zeferino Vaz, Sch Food Engn, LASEI, DEA, FEA, UNICAMP, Rua Monteiro Lobato 80, BR-13083862 Campinas - Brazil
[2] Univ Valladolid, Dept Chem Engn & Environm Technol, High Pressure Proc Grp, Doctor Mergelina S-N, E-47005 Valladolid - Spain
[3] Fed Univ Lavras UFLA, Dept Engn DEG, BR-37200000 Lavras, MG - Brazil
[4] Ecole Polytech Fed Lausanne, STI, IGM, IPESE, Stn 9, CH-1015 Lausanne - Switzerland
Total Affiliations: 4
Document type: Journal article
Source: ENERGY; v. 141, p. 139-148, DEC 15 2017.
Web of Science Citations: 3
Abstract

In this study, we discuss the difference regarding thermo-economic and environmental (water intake) aspects between two methods of biomass hydrolysis. A thermo-economic model was developed using Aspen Plus and MATLAB software in order to analyze the energy efficiency, as well as, the economic impact of the hydrolysis process integrated into a traditional ethanol production process from sugarcane. The study aimed at comparing the enzymatic route for sugarcane bagasse ethanol production with the supercritical water-based one. The use of supercritical water hydrolysis (SCWH) process showed promising results, being the process energetically self-sufficient when considering pumping of liquid streams with biomass content of 20% and the decompression of the steam separated after SCWH with a turbine, in order to produce electricity. In terms of economics, the biorefinery concept using enzymatic route presented the highest production costs due to the higher total investment cost and the cost for the raw materials, which is 14% higher than the biorefinery with SCWH, giving a payback time for the investments of 7.5 years, meanwhile 6.2 for the SCWH route. Also better results were obtained for water intake for the SCWH option, being lower than the maximum permitted for a new investment on the Brazilian sugarcane sector. (C) 2017 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 15/06954-1 - Development of an energetic self-sufficient and economically viable integrated sub/supercritical fluid-based biorefinery by the aid of computational modeling and simulation
Grantee:Juliana Queiroz Albarelli
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 12/10685-8 - Combination and coupling of processes for the production and encapsulation of value-added vegetal extracts: technical and economic evaluation
Grantee:Maria Angela de Almeida Meireles Petenate
Support Opportunities: Regular Research Grants
FAPESP's process: 15/13299-0 - From seeds to final products: feasible manufacturing routes of annatto applying process intensification and process integration
Grantee:Maria Angela de Almeida Meireles Petenate
Support Opportunities: Regular Research Grants
FAPESP's process: 13/18114-2 - Integral utilization of biomasses using sub/supercritical fluids: environmental, energetic and economic assessment of technological scenarios
Grantee:Juliana Queiroz Albarelli
Support Opportunities: Scholarships in Brazil - Post-Doctoral