Utilize este identificador para referenciar este registo: http://hdl.handle.net/1822/55610

TítuloInsights into the economic viability of cellulases recycling on bioethanol production from recycled paper sludge
Autor(es)Gomes, Daniel G.
Serna-Loaiza, Sebastián
Cardona, Carlos A.
Gama, F. M.
Domingues, Lucília
Palavras-chaveEconomic analysis
Cellulase recycling
Lignocellulosic ethanol
Recycled paper sludge
RevistaBioresource Technology
CitaçãoGomes, Daniel G.; Serna-Loaiza, Sebastián; Cardona, Carlos A.; Gama, F. M.; Domingues, Lucília, Insights into the economic viability of cellulases recycling on bioethanol production from recycled paper sludge. Bioresource Technology, 264, 347-355, 2018
Resumo(s)The economics of Recycled Paper Sludge conversion into ethanol was here assessed with emphasis on integrating a cellulase recycling system. Without cellulases recycling this process presented positive economic outputs (payback period of 7.85 years; 10.90 Million US$ of accumulated NPV) despite the modest ethanol titers. Recycling both free and solid-bound enzymes allowed considerable savings of enzyme but also an increase on annual costs (0.88 %), resulting on a superior economic output: payback period decreased to 7.25 years; accumulated NPV increased to 14.44 Million US$. Recycling exclusively the liquid fraction enabled a clear costs reduction, however, also total ethanol decreased, attenuating the abovementioned benefits. Targeting higher ethanol concentrations, superior solids consistencies were also evaluated. Despite a costs reduction, total ethanol decreased due to a higher ethanol retention on the solid. A sensitivity analysis further revealed that the cost of enzymes and ultrafiltration membrane may be critical on enzyme recycling economic feasibility.
Versão da editorahttp://www.journals.elsevier.com/bioresource-technology/
Arbitragem científicayes
Aparece nas coleções:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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