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Life cycle assessment of advanced bioethanol production from pulp and paper sludge
- Source :
- 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
- Publication Year :
- 2015
-
Abstract
- 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.
- Subjects :
- 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
Subjects
Details
- ISSN :
- 18732976
- Volume :
- 208
- Database :
- OpenAIRE
- Journal :
- Bioresource technology
- Accession number :
- edsair.doi.dedup.....c937c63a40d0f37ec100873cbd1145d0