The role of ionic liquid pretreatment and recycling design in the sustainability of a biorefinery: a sugarcane to ethanol example

Autor(es)

Ferrari, F. A. ^{[1, 2]} ; Nogueira, G. P. ^[3] ; Franco, T. T. ^[4] ; Dias, M. O. S. ^[5] ; Cavaliero, C. K. N. ^{[3, 6]} ; Witkamp, G. J. ^[7] ; van der Wielen, L. A. M. ^{[8, 2]} ; Forte, M. B. S. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, Fac Food Engn, Dept Food Engn, Bioproc & Metab Engn Lab, Monteiro Lobato St, BR-13083862 Campinas, SP - Brazil

^[2] Delft Univ Technol TUDelft, Fac Appl Sci, Bioproc Engn Biotechnol Dept, Postbus 5, NL-2600 AA Delft - Netherlands

^[3] Interdisciplinary Ctr Energy Planning NIPE, Cora Coralina 330 Zeferino Vaz, BR-13083896 Campinas, SP - Brazil

^[4] Univ Campinas UNICAMP, Fac Chem Engn, Albert Einstein 500 Zeferino Vaz, BR-13083852 Campinas, SP - Brazil

^[5] Univ Fed Sao Paulo, Inst Sci & Technol, Talim 330, Sao Jose Dos Campos, SP - Brazil

^[6] Univ Campinas UNICAMP, Fac Mech Engn, Mendeleyev 200 Zeferino Vaz, BR-13083860 Campinas, SP - Brazil

^[7] King Abdullah Univ Sci & Technol KAUST, Div Biol & Environm Sci & Engn BESE, Water Desalinat & Reuse Ctr WDRC, Thuwal 239556900 - Saudi Arabia

^[8] Univ Limerick, Bernal Inst, Limerick V94 T9PX - Ireland

• Tipo de documento: Artigo Científico
• Fonte: GREEN CHEMISTRY; v. 23, n. 22 OCT 2021.
• Citações Web of Science: 0

Resumo

The use of lignocellulosic (LC) materials, especially residues, as feedstock in biorefinery applications is a promising alternative to the oil refinery production of fuels, power and chemicals, reducing the global warming potential (GWP) related to these activities. The conversion of LC's carbohydrates into useful sugars is entirely dependent on the efficiency of the pretreatment (PT) step. Ionic liquids (ILs) have been explored as tailored solvents for the solubilization of LC's complex structure during PT, which can overcome the existing hurdles related to PT. This work assesses the impact of PT variables and the IL recycling through freezing concentration (FC) in an IL-based biorefinery. The influence of temperature, solid loading and IL dilution was systematically studied and the mass and energy balances, economic and environmental outcomes calculated. Life cycle analysis (LCA) was employed in a cradle-to-gate approach. Results showed that solid loading and IL dilution, rather than PT temperature, have the major influence on the energy requirements to produce 1 kg of ethanol. IL make up is a critical parameter to minimize the environmental impact and operational costs associated with the process. Product selling price and IL recycling were the most impacting variables concerning profitability. Extra investment for improved IL recycling is advantageous up to 99% of recovery. Product diversification can improve the economic feasibility even if it is associated with increased capital expenditure. The results show the importance of the pretreatment design and solvent recycling from an integrated perspective, thus challenging the criteria defined while assessing these steps alone. (AU)

• Processo FAPESP: 17/24520-4 - Nova estratégia para pré-tratamento de biomassa lignocelulósica: um estudo simultâneo e multivariado de parâmetros usando ultrassom e combinações de líquidos iônicos
• Beneficiário: Marcus Bruno Soares Forte
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Regular
• Processo FAPESP: 19/19976-4 - Processamento de biomassa lignocelulósica usando líquidos iônicos para aplicação em biorrefinarias
• Beneficiário: Felipe Augusto Ferrari
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 18/20173-0 - Avaliação técnica e ambiental da utilização de palha de cana-de-açúcar e resíduos florestais de eucalipto como matéria-prima para biorrefinarias no Estado de São Paulo
• Beneficiário: Guilherme Pessoa Nogueira
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 15/50612-8 - An integrated approach to explore a novel paradigm for biofuel production from lignocellulosic feedstocks
• Beneficiário: Telma Teixeira Franco
• Modalidade de apoio: Auxílio à Pesquisa - Temático
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• Beneficiário: Guilherme Pessoa Nogueira
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado Direto