Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 334262
Title Biofuel production from acid-impregnated willow and switchgrass
Author(s) Bakker, R.R.; Gosselink, R.J.A.; Maas, R.H.W.; Vrije, T. de; Jong, E. de; Groenestijn, J.W. van; Hazewinkel, J.H.O.
Source In: 2nd World conference on biomass for energy, industry and climate protection, Rome, Italy, 10-14 May 2004 [S.l.] : S.n. - p. 1467 - 1470.
Department(s) AFSG Biobased Products
Publication type Contribution in proceedings
Publication year 2004
Keyword(s) hydrolyse - panicum virgatum - wilgen - zuurbehandeling - fermentatie - ethanolproductie - bioethanol - biobrandstoffen - biomassaconversie - biobased economy - hydrolysis - willows - acid treatment - fermentation - ethanol production - biofuels - biomass conversion
Categories Bioenergy
Abstract As part of a broader technical and economic feasibility study, we studied production of bioethanol from two types of lignocellulosic biomass by way of concentrated acid impregnation at low temperature. Willow chips and switchgrass were submitted to various impregnation techniques with concentrated sulfuric acid at varying acid: biomass ratios and impregnation times. Goal of the experiments was to investigate the technical feasibility of concentrated acid pretreatment technology as part of an industrial process that employs recycling of acid through biological means. Experimental results showed that significant amounts of fermentable sugars including glucose (up to 78 f max. obtainable glucose) and xylose can be obtained by relatively simple impregnation techniques at room temperature. Fermentation of willow-derived hydrolysates with S. Cerevisiae yielded 0.45 - 0.49 g ethanol/g glucose. Ethanol production rates however were 38 ower compared to standard glucose fermentation, prompting the need for further optimization to reduce the formation of acetic acid and furfural, two fermentation inhibitors. Novel impregnation techniques, including employment of sulfur trioxide, were also investigated but require more work to assess technical feasibility
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