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https://hdl.handle.net/1822/55610
Título: | Insights 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-chave: | Economic analysis Cellulase recycling Lignocellulosic ethanol Recycled paper sludge |
Data: | Nov-2018 |
Editora: | Elsevier 1 |
Revista: | Bioresource Technology |
Citação: | Gomes, 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. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/55610 |
DOI: | 10.1016/j.biortech.2018.07.056 |
ISSN: | 0960-8524 |
e-ISSN: | 0960-8524 |
Versão da editora: | http://www.journals.elsevier.com/bioresource-technology/ |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_47817_1.pdf | 1,61 MB | Adobe PDF | Ver/Abrir |