Toward a sustainable biorefinery using high-gravity technology

Xiros, Charilaos,1973Universität Bern,University of Bern,Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden; Bern University of Applied Sciences, Switzerland (author)

The realization of process solutions for a sustainable bioeconomy depends on the efficient processing of biomass. High-gravity technology is one important alternative to realizing such solutions. The aims of this work were to expand the knowledge-base on lignocellulosic bioconversion processes at high solids content, to advance the current technologies for production of second-generation liquid biofuels, to evaluate the environmental impact of the proposed process by using life cycle assessment (LCA), and to develop and present a technically, economically, and environmentally sound process at high gravity, i.e., a process operating at the highest possible concentrations of raw material. The results and opinions presented here are the result of a Nordic collaborative study within the framework of the HG Biofuels project. Processes with bioethanol or biobutanol as target products were studied using wheat straw and spruce as interesting Nordic raw materials. During the project, the main scientific, economic, and technical challenges of such a process were identified. Integrated solutions to these challenges were proposed and tested experimentally, using wheat straw and spruce wood at a dry matter content of 30% (w/w) as model substrates. The LCA performed revealed the environmental impact of each of the process steps, highlighting the importance of the enzyme dose used for the hydrolysis of the plant biomass, as well as the importance of the fermentation yield.

Janssen, Mathias,1973Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)matjan (author)
Byström, RoberthSekab,SEKAB, Sweden (author)
Børresen, Børre T.Statoil ASA, Norway (author)
Cannella, DavidKöpenhamns universitet,University of Copenhagen,University of Copenhagen, Denmark (author)
Jørgensen, HenningDanmarks Tekniske Universitet,Technical University of Denmark,Köpenhamns universitet,University of Copenhagen,University of Copenhagen, Denmark; DTU Technical University of Denmark, Denmark (author)
Koppram, Rakesh,1986Austrian Center of Industrial Biotechnology (ACIB),Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden; ACIB Austrian Center of Industrial Biotechnology, Austria(Swepub:cth)koppram (author)
Larsson, Christer,1958Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden(Swepub:cth)mbtcl (author)
Olsson, Lisbeth,1963Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden(Swepub:cth)lisbetho (author)
Tillman, Anne-Marie,1958Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden(Swepub:cth)amt (author)
Wännström, SuneRISE,Processum,SEKAB, Sweden (author)
Janssen, MattyChalmers University of Technology, Sweden (author)
Universität BernChalmers tekniska högskola (creator_code:org_t)

By the author/editor: Xiros, Charilaos ...; Janssen, Mathias ...; Byström, Roberth; Børresen, Børre ...; Cannella, David; Jørgensen, Henni ...; show more...; Koppram, Rakesh, ...; Larsson, Christe ...; Olsson, Lisbeth, ...; Tillman, Anne-Ma ...; Wännström, Sune; Janssen, Matty; show less...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Industrial Biote ...; and Biochemicals

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Industrial Biote ...; and Bioenergy

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