Change search
Link to record
Permanent link

Direct link
BETA
Publications (6 of 6) Show all publications
Nickel, D. B., Fornell, R., Janssen, M. & Franzén, C. J. (2020). Multi-Scale Variability Analysis of Wheat Straw-Based Ethanol Biorefineries Identifies Bioprocess Designs Robust Against Process Input Variations. Frontiers in Energy Research, 8, Article ID 55.
Open this publication in new window or tab >>Multi-Scale Variability Analysis of Wheat Straw-Based Ethanol Biorefineries Identifies Bioprocess Designs Robust Against Process Input Variations
2020 (English)In: Frontiers in Energy Research, E-ISSN 2296-598X, Vol. 8, article id 55Article in journal (Refereed) Published
Abstract [en]

Bioprocesses based on (ligno-)cellulosic biomass are highly prone to batch-to-batch variations. Varying raw material compositions and enzyme activities hamper the prediction of process yields, economic feasibility and environmental impacts. Commonly, these performance indicators are averaged over several experiments to select suitable process designs. The variabilities in performance indicators resulting from variable process inputs are often neglected, causing a risk for faulty performance predictions and poor process design choices during scale-up. In this paper, a multi-scale variability analysis framework is presented that quantifies the effects of process input variations on performance indicators. Using the framework, a kinetic model describing simultaneous saccharification and ethanol fermentation was integrated with a flowsheet process model, techno-economic analysis and life cycle assessment in order to evaluate a wheat straw-based ethanol biorefinery. Hydrolytic activities reported in the literature for the enzyme cocktail Cellic® CTec2, ranging from 62 to 266 FPU·mL−1, were used as inputs to the multi-scale model to compare the variability in performance indicators under batch and multi-feed operation for simultaneous saccharification and fermentation. Bioprocess simulations were stopped at ethanol productivities ≤0.1 g·L−1·h−1. The resulting spreads in process times, hydrolysis yields, and fermentation yields were incorporated into flowsheet, techno-economic and life cycle scales. At median enzymatic activities the payback time was 7%, equal to 0.6 years, shorter under multi-feed conditions. All other performance indicators showed insignificant differences. However, batch operation is simpler to control and well-established in industry. Thus, an analysis at median conditions might favor batch conditions despite the disadvantage in payback time. Contrary to median conditions, analyzing the input variability favored multi-feed operation due to a lower variability in all performance indicators. Variabilities in performance indicators were at least 50% lower under multi-feed operation. Counteracting the variability in enzymatic activities by adjusting the amount of added enzyme instead resulted in higher uncertainties in environmental impacts. The results show that the robustness of performance indicators against input variations must be considered during process development. Based on the multi-scale variability analysis process designs can be selected which deliver more precise performance indicators at multiple system levels. 

Place, publisher, year, edition, pages
Frontiers Media S.A., 2020
Keywords
bioethanol, biorefinery, life cycle assessment, multi-scale model, system analysis, techno-economic analysis, uncertainty analysis, variability analysis
National Category
Engineering and Technology
Identifiers
urn:nbn:se:ri:diva-45001 (URN)10.3389/fenrg.2020.00055 (DOI)2-s2.0-85084732637 (Scopus ID)
Note

Funding details: Energimyndigheten, P41272-1; Funding details: Chalmers Tekniska Högskola; Funding text 1: The authors thank Ruifei Wang for providing raw data from laboratory and demo scale experiments. Funding. This research was funded by the Swedish Energy Agency (P41272-1) and the Area of Advance Energy at Chalmers University of Technology. The funding bodies had no influence on the design of the study and were involved neither in the collection, analysis and interpretation of data, nor in the writing of the manuscript.

Available from: 2020-05-27 Created: 2020-05-27 Last updated: 2020-05-28Bibliographically approved
Mirata, M., Carlsson, P., Harris, S., Martin, M., Fornell, R., Hackl, R., . . . Broberg, S. (2018). International and Swedish State of Play in Industrial Symbiosis: A review with proposals to scale up industrial symbiosis in Sweden.
Open this publication in new window or tab >>International and Swedish State of Play in Industrial Symbiosis: A review with proposals to scale up industrial symbiosis in Sweden
Show others...
2018 (English)Report (Other academic)
Publisher
p. 76
National Category
Other Engineering and Technologies not elsewhere specified Other Earth and Related Environmental Sciences Social Sciences Interdisciplinary
Identifiers
urn:nbn:se:ri:diva-33539 (URN)
Available from: 2018-04-03 Created: 2018-04-03 Last updated: 2018-08-16Bibliographically approved
Fahnestock, J., Norström, M., Johnson, A., Olsson, M., Johansson, N., Brolin, M., . . . Östling, H. (2016). RISEnergy: Roadmaps for energy innovation in Sweden through 2030.
Open this publication in new window or tab >>RISEnergy: Roadmaps for energy innovation in Sweden through 2030
Show others...
2016 (English)Report (Other academic)
Abstract [en]

RISE Research Institutes of Sweden is a group of research and technology organisations. RISE is a leading innovation partner working global cooperation with academia, enterprise and society to create value, growth and competitiveness through research excellence and innovation.

In the area of Energy, RISE has developed innovation Roadmaps covering:

  • Energy Efficient Transport
  • Electric Power System
  • Energy Efficient and Smart Buildings
  • Sustainable Thermal Processes
  • Efficient Energy Use in Industry
  • Decarbonisation of Basic Industries

These Roadmaps describe development pathways for technologies, non-technical elements (market design, user behaviours, policies, etc.) and key actors that deliver on a plausible, desirable vision for each respective innovation area in 2030. These Roadmaps are intended to support RISE’s strategic planning and development, but should be relevant reading for anyone interested in energy innovation in Sweden.

Publisher
p. 102
Keywords
energy, innovation, roadmap, research, institutes, transport, buildings, power, electricity, industry, efficiency, thermal processes, ccs, ccus, decarbonisation, Energi, innovation, roadmap, forskning, institut, transport, byggnader, kraftstystem, el, industri, effektivisering, termiska processer, ccs, ccus, avkarbonisering
National Category
Energy Systems
Identifiers
urn:nbn:se:ri:diva-28181 (URN)
Available from: 2017-02-15 Created: 2017-02-15 Last updated: 2020-01-29Bibliographically approved
Fornell, R. (2014). Going from ethanol to a wide array of bio-based products in a biochemical demo plant (ed.). In: Nordic Wood Biorefinery Conference 2014 - proceedings: . Paper presented at Nordic Wood Biorefinery Conference 2014.
Open this publication in new window or tab >>Going from ethanol to a wide array of bio-based products in a biochemical demo plant
2014 (English)In: Nordic Wood Biorefinery Conference 2014 - proceedings, 2014, , p. 6Conference paper, Published paper (Other academic)
Publisher
p. 6
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-12356 (URN)16426 (Local ID)16426 (Archive number)16426 (OAI)
Conference
Nordic Wood Biorefinery Conference 2014
Available from: 2016-09-13 Created: 2016-09-13 Last updated: 2018-08-16Bibliographically approved
Carlsson, G., Fornell, R., Westin, M., Swerin, A., Melander, R. & Engström, C. (2014). Our Resources for the Forest-based Industry (ed.). Paper presented at .
Open this publication in new window or tab >>Our Resources for the Forest-based Industry
Show others...
2014 (Swedish)Report (Refereed)
Series
SP Arbetsrapporter ; 2014:04
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-3962 (URN)29520 (Local ID)29520 (Archive number)29520 (OAI)
Available from: 2016-09-07 Created: 2016-09-07 Last updated: 2020-01-29Bibliographically approved
Carlsson, G., Nussbaum, R., Fornell, R., Westin, M., Swerin, A., Melander, R. & Engström, C. (2013). Resources for Forest-based Industries (ed.). Paper presented at .
Open this publication in new window or tab >>Resources for Forest-based Industries
Show others...
2013 (Swedish)Report (Refereed)
Series
SP Arbetsrapporter ; 2013:67
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-3895 (URN)15249 (Local ID)15249 (Archive number)15249 (OAI)
Available from: 2016-09-07 Created: 2016-09-07 Last updated: 2020-01-29Bibliographically approved
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-6174-1396

Search in DiVA

Show all publications
v. 2.35.10