Life cycle assessment of advanced bioethanol production from pulp and paper sludge
| Autor: | Ana C. Oliveira, Diogo Sebastião, Susana Marques, Francisco M. Gírio, César Fonseca, Cristina T. Matos, Margarida Gonçalves |
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| Rok vydání: | 2015 |
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Paper
Environmental Engineering 020209 energy Waste valorisation Industrial Waste Bioengineering Bioethanol 02 engineering and technology engineering.material Raw material Environment Industrial waste Life cycle assessment Bioenergy 0202 electrical engineering electronic engineering information engineering Ethanol fuel Waste Management and Disposal Life-cycle assessment Xylose Waste management Ethanol Sewage Renewable Energy Sustainability and the Environment Pulp (paper) Hydrolysis General Medicine Waste valorization Pulp and paper sludge Glucose Biofuel Fermentation engineering Environmental science Valorisation Biotechnology |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Sebastião, D, Gonçalves, M S, Marques, S, Fonseca, C, Gírio, F, Oliveira, A C & Matos, C T 2016, ' Life cycle assessment of advanced bioethanol production from pulp and paper sludge ', Bioresource Technology, vol. 208, pp. 100-109 . https://doi.org/10.1016/j.biortech.2016.02.049 |
| ISSN: | 1873-2976 |
| Popis: | This work evaluates the environmental performance of using pulp and paper sludge as feedstock for the production of second generation ethanol. An ethanol plant for converting 5400 tons of dry sludge/year was modelled and evaluated using a cradle-to-gate life cycle assessment approach. The sludge is a burden for pulp and paper mills that is mainly disposed in landfilling. The studied system allows for the valorisation of the waste, which due to its high polysaccharide content is a valuable feedstock for bioethanol production. Eleven impact categories were analysed and the results showed that enzymatic hydrolysis and neutralisation of the CaCO3 are the environmental hotspots of the system contributing up to 85% to the overall impacts. Two optimisation scenarios were evaluated: (1) using a reduced HCl amount in the neutralisation stage and (2) co-fermentation of xylose and glucose, for maximal ethanol yield. Both scenarios displayed significant environmental impact improvements. |
| Databáze: | OpenAIRE |
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