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Träfflista för sökning "WFRF:(Björnsson Lovisa) ;pers:(Sipos Balint)"

Sökning: WFRF:(Björnsson Lovisa) > Sipos Balint

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1.
  • Kreuger, Emma, et al. (författare)
  • Bioconversion of industrial hemp to ethanol and methane: The benefits of steam pretreatment and co-production
  • 2011
  • Ingår i: Bioresource Technology. - : Elsevier BV. - 1873-2976 .- 0960-8524. ; 102:3, s. 3457-3465
  • Tidskriftsartikel (refereegranskat)abstract
    • Several scenarios for ethanol production, methane production (by anaerobic digestion) and co-production of these, using autumn harvested hemp as substrate, were investigated and compared in terms of gross energy output. Steam pretreatment improved the methane production rate compared with mechanical grinding. The methane yield of steam pretreated stems was similar both with and without pre-hydrolysis with cellulolytic enzymes. Co-production of ethanol and methane from steam pretreated stems gave a high yield of transportation fuel, 11.1-11.7 MJ/kg processed stem dry matter (DM); more than twice that of ethanol production alone from hexoses, 4.4-5.1 MJ/kg processed stem DM. Co-production from the whole hemp plant would give 2600-3000 L ethanol and 2800-2900 m(3) methane, in total 171-180 GJ per 10,000 m(2) of agricultural land, based on a biomass yield of 16 Mg DM. Of this, the yeast and enzymes from ethanol production were estimated to contribute 700 m(3) (27 GJ) of methane. (C) 2010 Elsevier Ltd. All rights reserved.
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2.
  • Sipos, Balint, et al. (författare)
  • Steam pretreatment of dry and ensiled industrial hemp for ethanol production
  • 2010
  • Ingår i: Biomass & Bioenergy. - : Elsevier BV. - 1873-2909 .- 0961-9534. ; 34:12, s. 1721-1731
  • Tidskriftsartikel (refereegranskat)abstract
    • Biomass can be converted into liquid and gaseous biofuels with good efficiency. In this study, the conversion of industrial hemp (Cannabis sativa L.), a biomass source that can be cultivated with a high biomass yield per hectare, was used. Steam pretreatment of dry and ensiled hemp was investigated prior to ethanol production. The pretreatment efficiency was evaluated in terms of sugar recovery and polysaccharide conversion in the enzymatic hydrolysis step. For both materials, impregnation with 2% SO2 followed by steam pretreatment at 210 degrees C for 5 min were found to be the optimal conditions leading to the highest overall yield of glucose. Simultaneous saccharification and fermentation experiments carried out with optimised pretreatment conditions resulted in ethanol yields of 163 g kg(-1) ensiled hemp (dry matter) (71% of the theoretical maximum) and 171 g kg(-1) dry hemp (74%), which corresponds to 206-216 l Mg-1 ethanol based on initial dry material. (C) 2010 Elsevier Ltd. All rights reserved.
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  • Resultat 1-2 av 2
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tidskriftsartikel (2)
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refereegranskat (2)
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Björnsson, Lovisa (2)
Zacchi, Guido (2)
Svensson, Sven-Erik (2)
Kreuger, Emma (2)
Reczey, Kati (1)
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Lunds universitet (2)
Sveriges Lantbruksuniversitet (2)
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Engelska (2)
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Lantbruksvetenskap (2)

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