Production of pulp from Salix viminalis energy crops using the FIRSST process

Lavoie, Jean‐Michel; Capek-Menard, Eva; Gauvin, Henri; Chornet, E.

doi:10.1016/j.biortech.2009.09.021

Cited by 71 publications

(45 citation statements)

References 11 publications

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“…At this point, the two-step FIRSST process has allowed the isolation, in high yields, of all the fractions of lignocellulosic biomass whilst producing pulp with good mechanical properties. Example of mechanical properties obtained from FIRSST pulps are depicted in the Table 4 for Salix vimimalis (Lavoie et al, 2010a), for a mixture of softwood (Lavoie et al, 2010b) and for Cannabis sativa (Lavoie et al unpublished results). Opportunity to produce quality pulp is yet another advantage of this technique which would, from the same feedstock, allow the production of many derived products including ethanol and cellulose.…”

Section: The Feedstock Impregnation Rapid and Sequential Steam Treatmmentioning

confidence: 99%

“…Once the second cooking period is completed, biomass is rinced with a 10/1 ratio water/fibre to ensure removal of the remaining sodium ions. Such process has been tested on different feedstock including energy crops (Lavoie et al, 2010a), residual forest biomass (Lavoie et al, 2010b) and different agricultural residues (Lavoie et al, 2011). When using based-catalysed steam process, the catalyst itself, as in the case of acid hydrolysis, becomes an important factor of the reaction.…”

Section: The Feedstock Impregnation Rapid and Sequential Steam Treatmmentioning

confidence: 99%

“…Severity factors were also related to the relative hydrolysis of the hemicelluloses macromolecule and (Overend and Chornet., 1987) showed that at a severity factor of 4, hemicelluloses were completely hydrolysed and there was starting to be an impact on the cellulosic fiber. This concept, can serve as a guide for other substrates although it was shown to vary from one feedstock to another, mostly because of the varying nature and amounts of hemicelluloses found in the biomass (Lavoie et al, 2010a(Lavoie et al, , 2010b(Lavoie et al, , 2010c. Impact of the calculated severity factor has also been reported for other feedstocks as residual cotton and recycled paper (Shen et al, 2008), aspen wood (Li et al, 2005), douglas fir (Wu et al, 1999), from rice husk and straws (Gerardi et al, 1999), from yellow poplar, from peanut hulls and from sugar cane (Glasser et al, 1998).…”

Section: Basics Informations About Steam Treatmentsmentioning

confidence: 99%

See 2 more Smart Citations

Biorefining Lignocellulosic Biomass via the Feedstock Impregnation Rapid and Sequential Steam Treatment

Lavoie¹,

Beauchet²,

Berberi³

et al. 2011

Biofuel's Engineering Process Technology

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Section: The Feedstock Impregnation Rapid and Sequential Steam Treatmmentioning

confidence: 99%

Section: The Feedstock Impregnation Rapid and Sequential Steam Treatmmentioning

confidence: 99%

Section: Basics Informations About Steam Treatmentsmentioning

confidence: 99%

See 1 more Smart Citation

Biorefining Lignocellulosic Biomass via the Feedstock Impregnation Rapid and Sequential Steam Treatment

Lavoie¹,

Beauchet²,

Berberi³

et al. 2011

Biofuel's Engineering Process Technology

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“…The intensity of hydrothermal pretreatment is defined as the logarithm of the severity factor R o (Lavoie et al 2010) and was calculated using the expression…”

Section: Hydrothermal Pretreatmentmentioning

confidence: 99%

Hydrothermal Treatment and Enzymatic Saccharification of Corncobs

Sun¹,

Yang²,

Yang³

et al. 2014

BioResources

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Hydrothermal pretreatment of corncobs in aqueous media under nonisothermal conditions is an effective means for solubilizing hemicellulose fractions and improving cellulose hydrolysis. The effects of a range of pretreatment severities (temperatures of 170 to 230 °C) on the conversion of corncobs into fermentable sugars were examined. The major differences between the conversions of untreated and pretreated corncobs were the dissolution of hemicelluloses into the prehydrolyzate and the partial removal and relocation of lignin on the external surface of biomass particles (in the form of recondensed droplets) in the pretreated corncobs. Hemicellulose dissolution increased with pretreatment temperature. The maximum sugar recovery (272.3 g/kg raw material) and the minimum accumulation of inhibitory compounds in the prehydrolyzate were observed following treatment at 190 °C. While the fibrils of the untreated raw material remained largely intact, serious disruption of the cell wall was observed in SEM images of the surfaces of pretreated samples. Accordingly, the cellulose digestibilities of residues increased from 26.8% for the raw material to almost 100% for the 190 °C-treated sample. It was concluded that low severity hydrothermal pretreatment can be successfully applied to corncobs to obtain high cellulose digestibility while operating at low enzyme charges.

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“…Production of pulp via the FIRSST process was of 30%wt (dry mass) for willow [6], 40%wt for softwoods [7], 37%wt for hemp and 34%wt for triticale. Pulp produces contained about 3-6% of lignin and the residual fibre was mostly composed of C 6 sugars.…”

Section: Feedstock Impregnation Rapid and Sequential Steam Treatment mentioning

confidence: 99%

High yields of sugars via the non-enzymatic hydrolysis of cellulose

Berberi¹,

Turcotte²,

Lantagne³

et al. 2011

WIT Transactions on Ecology and the Environment

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Given the cost of cellulosics (quasi-homogeneous residual feeds range in North America, between $US 60-80/tonne, dry basis, FOB conversion plant) their fractionation and subsequent use of the intermediate fractions is a strategy that makes economic sense. Furthermore, it permits the isolation of cellulose with low contents of lignin and hemicellulose. Once the cellulose is isolated, its use as a chemically pulped fibre and the conversion of the fines into glucose becomes possible. Our group has been working on the chemical depolymerisation of the cellulose (both the fines and the fibres as well) using highly ionic solutions. The method implies recovery of both anions and cations by state of the art technologies. This paper presents the fractionation + ionic decrystallization and depolymerisation approach, provides and discusses its energy balance and compares it with the enzymatic route for hydrolysis in applications to < 40 MML Biofuels/y plants which correspond to < 100 000 t/y of input lignocellulosics, dry basis.

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Production of pulp from Salix viminalis energy crops using the FIRSST process

Cited by 71 publications

References 11 publications

Biorefining Lignocellulosic Biomass via the Feedstock Impregnation Rapid and Sequential Steam Treatment

Biorefining Lignocellulosic Biomass via the Feedstock Impregnation Rapid and Sequential Steam Treatment

Hydrothermal Treatment and Enzymatic Saccharification of Corncobs

High yields of sugars via the non-enzymatic hydrolysis of cellulose

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