Protic acid resin enhanced 1-butyl-3-methylimidazolium chloride pretreatment of Arundo donax Linn.

You, Tingting; Zhang, Liming; Zhou, Sukun; Xu, Feng

doi:10.1016/j.biortech.2014.06.049

Cited by 9 publications

(12 citation statements)

References 17 publications

(7 reference statements)

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“…However, the relative content of lignin in pretreated samples was only slightly decreased in R90-1.0 and R100-1.0 samples but obviously increased (23.90–48.02 %) in the others. Relative contents of lignin in R90-1.0 and R100-1.0 samples were similar to those reported previously using a two-steps IL (160 °C)-Amberlyst (90 °C) pretreatment [23]. The highest relative content of lignin was observed in R150-0.5 sample, accompanying the lowest cellulose content.…”

Section: Resultssupporting

confidence: 85%

“…For instance, da Costa Lopes and coworkers [21] used acid resin Amberlite XAD-7 to extract phenolic compounds that dissolved after a complete fractionation of biomass by IL. In our previous research, a two-step solid acid catalyzed [C 4 mim]Cl pretreatment has been developed to open the rigid structure of plants [23]. Accordingly, 5.21-fold enhancement of fermentable sugars yield from A. donax could be gained by enzymatic hydrolysis.…”

Section: Introductionmentioning

confidence: 99%

“…The previous proposed procedures [15, 23] required a comparatively high temperature (160 °C) in the first IL pretreated step, which was higher than the maximum operating temperatures of most resins. Therefore, additional cooling apparatus was demanded to cool down the system before adding any acid resins.…”

Section: Introductionmentioning

confidence: 99%

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Facile isothermal solid acid catalyzed ionic liquid pretreatments to enhance the combined sugars production from Arundo donax Linn.

You

Shao

Wang

et al. 2016

Biotechnol Biofuels

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BackgroundSolid acid catalyzed inexpensive ionic liquid (IL) pretreatment is promising because of its effectiveness at decreasing biomass recalcitrance to subsequent enzymatic hydrolysis or in situ hydrolysis of carbohydrate oligomers. However, the conventional strategy was limited by the complex non-isothermal process and considering only one aspect of sugar recovery. In this study, facile isothermal pretreatments using Amberlyst 35DRY catalyzed 1-n-butyl-3-methylimidazolium chloride ([C4mim]Cl) at mild conditions were developed on bioenergy crop Arundo donax Linn. to enhance the combined sugars released. The physicochemical differences, enzymatic digestibility, and sugars released in situ were evaluated and compared to define the best set of conditions.ResultsThe optimized isothermal pretreatment (110 °C, IL for 3 h, Amberlyst for 1 h) resulted in significant enhancement in combined sugars released (58.4 g/100 g raw materials), recovering 85.0 % of the total reducing glycan in the raw biomass. This remarkable improvement could be correlated to cellulose crystallinity reduction, crystalline conversion, and partial removal of the main chemical components caused by the pretreatment. Particularly, solubilization of hemicelluloses and partial depolymerization of cellulose contributed to the synergetic improvement of sugars production in enzymatic hydrolysis and in situ. Irrespective of the generous differences in mass recovery, the highest cellulose digestibility of 90.2 % and sugar released of 43.0 % (based on initial materials) in the pretreatment liquor were obtained. Interestingly, lignin (0.8–6.1 %) and sugars derived lactic acid (4.70–5.94 %) were produced without any notable deleterious effects.ConclusionsIsothermal [C4mim]Cl-Amberlyst pretreatment was a highly effective, simple, and convenient process that produced high yields of fermentable sugars from recalcitrant biomass by in situ hydrolysis of soluble biomass and enhancement of cellulose digestibility of the regenerated biomass. Relatively high amount of new revenues beyond sugars of this pretreatment could promote the commercial viability.Electronic supplementary materialThe online version of this article (doi:10.1186/s13068-016-0589-8) contains supplementary material, which is available to authorized users.

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Section: Resultssupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

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Facile isothermal solid acid catalyzed ionic liquid pretreatments to enhance the combined sugars production from Arundo donax Linn.

You

Shao

Wang

et al. 2016

Biotechnol Biofuels

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“…Results indicated that clone AD20 pretreated with IL at 160 °C for 3 h, was highly performing if compared to the one example of data available in the literature for A. donax . In that case, You et al.…”

Section: Resultsmentioning

confidence: 89%

Sugars Production for Green Chemistry from 2^nd Generation Crop (Arundo donax L.): A Full Field Approach.

et al. 2016

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Arundo donax L. (giant cane) is a suitable feedstock for sugar production because of its high biomass yield and low agronomic input requirement. Eight A. donax clones were studied at full field scale for sugars production. 1‐ethyl‐3‐methylimidazolium acetate ‐ [C2C1im][OAc] ‐ and enzymatic treatments were used to obtain the sugars. Highest glucose yields were obtained for pretreatment performed at 160 °C for 3 hours, with glucan conversion yields from 40.8 % to 76.2 % for most productive A. donax clones (AD10 and AD 20). Differences in cell wall structure measured by micropore surface area (pores of 0.3 ‐ 1.5 nm) explained both ionic liquids and enzymatic performances of clones. Structural differences were due to the guaiacyl (G) and syringyl (S) units that determined different lignin cross‐linking affecting cell wall microporosity and so enzyme accessibility. Total glucose and xylose yields (11 Mg Ha−1 and 4.84 Mg Ha−1, clone AD20), were impressive and about 3.5 to 4.5 times more than those obtainable from switchgrass and corn stover.

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“…In these experiments a higher glucose yield (92.8 %) was obtained after addition of Amberlyst 35 for the single 1-butyl-3-methylimidazolium chloride pretreatment at an enzyme loading of 20 FPU/g substrate. [72] In another study a sequential pretreatment of sunflower stalk biomass in a combinatorial regime involving alkali (NaOH) and 1-butyl-3-methylimidazolium chloride improved the pretreatment, enhancing the enzymic digestibility and resulted an increase in sugar yield (163.42 mg/g biomass) as compared to standalone pretreatment using alkali (97.38 mg/g biomass) or IL (79.6 mg/g biomass). [73] The selective hydrolysis of hemicellulose fraction is also known by using BAIL based pretreatments.…”

Section: Ionic Liquids In Biomass Pretreatmentmentioning

confidence: 99%

Ionic Liquids in Biomass Processing

Amarasekara

2018

Israel Journal of Chemistry

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The ionic liquids have emerged as new solvents and catalysts for processing biomass to value added chemicals and fuels. This review will present the recent developments in applications of ionic liquids in lignocellulosic biomass pretreatments, depolymerization, biodiesel synthesis, dehydration of carbohydrates to renewable feedstock chemicals as well as further transformations of biomass derived feedstocks such as furfural, 5‐hydroxymethylfurfural and levulinic acid to value added chemicals. In addition, the recycling of ionic liquids used in biomass processing is also discussed in the review.

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Protic acid resin enhanced 1-butyl-3-methylimidazolium chloride pretreatment of Arundo donax Linn.

Cited by 9 publications

References 17 publications

Facile isothermal solid acid catalyzed ionic liquid pretreatments to enhance the combined sugars production from Arundo donax Linn.

Facile isothermal solid acid catalyzed ionic liquid pretreatments to enhance the combined sugars production from Arundo donax Linn.

Sugars Production for Green Chemistry from 2^nd Generation Crop (Arundo donax L.): A Full Field Approach.

Ionic Liquids in Biomass Processing

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Protic acid resin enhanced 1-butyl-3-methylimidazolium chloride pretreatment of Arundo donax Linn.

Cited by 9 publications

References 17 publications

Facile isothermal solid acid catalyzed ionic liquid pretreatments to enhance the combined sugars production from Arundo donax Linn.

Facile isothermal solid acid catalyzed ionic liquid pretreatments to enhance the combined sugars production from Arundo donax Linn.

Sugars Production for Green Chemistry from 2nd Generation Crop (Arundo donax L.): A Full Field Approach.

Ionic Liquids in Biomass Processing

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Product

Resources

About

Sugars Production for Green Chemistry from 2^nd Generation Crop (Arundo donax L.): A Full Field Approach.