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A co-solvent hydrolysis strategy for the production of biofuels: process synthesis and technoeconomic analysis

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Abstract

We develop an integrated strategy for the production of ethanol from lignocellulosic biomass. Cellulose and hemicellulose fractions are first hydrolyzed into sugars using a mixture of γ-valerolactone (GVL), water, and toluene as a solvent containing dilute sulfuric acid as a catalyst, and the sugars are then co-fermented into ethanol over engineered yeast strains. Separation subsystems are designed to effectively recover GVL and toluene for reuse in biomass hydrolysis and to recover lignin and humins for heat and power generation. We also develop an alternative process, in which we recover sugars and GVL from the residual biomass. To minimize utility requirements, we conduct heat integration, which allows us to meet all heating requirements using biomass residues. Finally, we perform a range of system-level analyses to identify the major cost and technological drivers. The proposed strategy is shown to be cost-competitive with other strategies.

Graphical abstract: A co-solvent hydrolysis strategy for the production of biofuels: process synthesis and technoeconomic analysis

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Publication details

The article was received on 21 Dec 2016, accepted on 06 Mar 2017 and first published on 20 Mar 2017


Article type: Paper
DOI: 10.1039/C6RE00227G
Citation: React. Chem. Eng., 2017, Advance Article
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    A co-solvent hydrolysis strategy for the production of biofuels: process synthesis and technoeconomic analysis

    W. Won, A. H. Motagamwala, J. A. Dumesic and C. T. Maravelias, React. Chem. Eng., 2017, Advance Article , DOI: 10.1039/C6RE00227G

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