Wet Explosion: a Universal and Efficient Pretreatment Process for Lignocellulosic Biorefineries

Biswas, Rajib; Uellendahl, Hinrich; Ahring, Birgitte Kiær

doi:10.1007/s12155-015-9590-5

Cited by 98 publications

(47 citation statements)

References 114 publications

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“…Wet explosion pretreatment of the Douglas fir sample (FS-10) was performed at pilot-plant facility, Washington State University Tri-Cities using a 100 L pretreatment reactor system as previously described Biswas et al, 2015). Temperature, O 2 loading, and residence time of the pretreatment system were regulated and recorded electronically.…”

Section: Experimental Design and Pretreatment In Pilot-scalementioning

confidence: 99%

Pretreatment of forest residues of Douglas fir by wet explosion for enhanced enzymatic saccharification

Biswas

Teller

Ahring

2015

Bioresource Technology

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Section: Experimental Design and Pretreatment In Pilot-scalementioning

confidence: 99%

Pretreatment of forest residues of Douglas fir by wet explosion for enhanced enzymatic saccharification

Biswas

Teller

Ahring

2015

Bioresource Technology

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“…20 Enzymatic delignification is unique in nature in the sense that it selectively 7 targets and cleaves the specific phenolic moieties of the lignin molecule. This results in 8 formation of various phenolic intermediates which do not interfere with the hydrolysis process, 9 but rather act as natural mediators 21 taking part in the oxidation of non-phenolic moieties of 10 lignin molecule. 22,23 It also improves the accessibility of hydrolytic enzymes (even at lower 11 concentration) towards depolymerized lignocellulosics for efficient hydrolysis.…”

Section: Introductionmentioning

confidence: 99%

“…The whole plant, including stems and leaf sheaths, 4 were chopped into small pieces using a chopper. 6 2.2 Biochemical composition analysis of raw substrate 7 Moisture content of S. spontaneum was determined by standard methods of Association of 8 Analytical Communities (AOAC). 6 2.2 Biochemical composition analysis of raw substrate 7 Moisture content of S. spontaneum was determined by standard methods of Association of 8 Analytical Communities (AOAC).…”

Section: Introductionmentioning

confidence: 99%

“…After, a fixed incubation time, the solid residue was separated and 4 subsequently oven dried for residual lignin content estimation. The different Table 1 in un-coded terms which include -1, 0, +1 as lowest, middle and highest 8 value for five parameters respectively. In the beginning of the experimental work, single parameters such as solid loading 7 (5-40 %, w/v), incubation time (1-10 h), 30-60 °C, pH (3-10), and enzyme concentration (100-8 1000 IU/mL) were selected to study its effects on enzymatic delignification.…”

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Enzymatic delignification: an attempt for lignin degradation from lignocellulosic feedstock

Rajak

Banerjee

2015

RSC Adv.

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1Burgeoning population growth, increased demand of transportation and industrialization urges 2 for excessive use of fossil fuels, which in turn lead to higher emission of greenhouse gases 3 contributing to global warming. At this juncture, biomass based biofuel production from 4 sustainable resources like lignocellulosics acts as a better alternative for achieving zero emission. 5 This in turn necessitates a major effort for development of an efficient biomass delignification 6 method which is an essential prerequisite of complete biofuel production process. 7Lignocellulosics such as Saccharum spontaneum contains 17.46 % of lignin and 67 % of 8 carbohydrate in its cell wall. To make this enormous amount of carbohydrates more accessible 9 for hydrolysis and to be used further in fermentation, degradation of lignin through laccase has 10 been carried out. 11In the present work, Response Surface Methodology (RSM) based on Central Composite Design 12 (CCD) has been used to investigate the effects of the different process parameters. The 13 maximum delignification obtained was 84.67 % at 6.21 h of incubation time upon monitoring the 14 initial lignin content of 17.46 % of the biomass. Thorough study of the biomass was carried out 15 by elemental composition analysis and energy density measurement. Further structural 16 characteristics of delignified substrate were analyzed by Scanning Electron Microscopy (SEM), 17 Fourier-Transform Infra-Red Spectroscopy (FTIR) and X-Ray Diffraction Spectroscopy (XRD) 18 which supported the efficacy of the delignification process.19 4dependence on fossil fuels. In this context, biofuel production from biomass, specifically from 5 lignocellulosics, is gaining global attraction owing to its low-cost, non-competitive and 6 sustainable nature. Lignocellulosic biomass contain 40-60 % cellulose, 20-30 % hemicellulose 7 and 15-30 % lignin. 3 Generally, lignocellulosics such as, grass species represent potential 8 candidates for the bioethanol production because of their high regenerative capacity and reduced 9 land requirement. Saccharum spontaneum (Kans or Sarkanda) is a perennial tall grass that grows 10 up to 4m in height, has deep rhizome and root system to utilize water efficiently and occupies 11 vast acres of land mass worldwide. 4 Its ability to quickly grow, and colonize land as well as its 12 high content of cell wall carbohydrates (67.85 %, dry weight basis) makes it a potential 13 candidate for bioethanol production. 5-7 14 Biomass based biofuel production, necessitates dismantling of plant cell wall constituents into 15 carbohydrate polymers for subsequent hydrolysis into monomeric sugars. One of the key aspects 16 of biomass heterogeneity towards hydrolysis is associated with the composition and content of 17 lignin molecule which is a large and complex aromatic structure containing phenylpropanoid 18 subunits linked by carbon-carbon and carbon-oxygen bonds. Lignin is closely interlaced with 19 hemicellulose molecules forming an envelope to wrap the crystalline cellulose mi...

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“…The pretreatment is necessary to breakdown the recalcitrance of lignocellulosic biomass for the second generation bio-ethanol production (Galbe and Zacchi, 2012). An effective pretreatment method can increase the enzymatic digestion performance of lignocelluloses and reduce consumption of enzyme in saccharification stage (Biswas et al, 2015). In the past two decades, variety of pretreatment methods had been discovered, such as lime, dilute acid, steam explosion and organic solvent pretreatment (Singh et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

A new magnesium bisulfite pretreatment (MBSP) development for bio-ethanol production from corn stover

Ren

Лю

et al. 2016

Bioresource Technology

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Wet Explosion: a Universal and Efficient Pretreatment Process for Lignocellulosic Biorefineries

Cited by 98 publications

References 114 publications

Pretreatment of forest residues of Douglas fir by wet explosion for enhanced enzymatic saccharification

Pretreatment of forest residues of Douglas fir by wet explosion for enhanced enzymatic saccharification

Enzymatic delignification: an attempt for lignin degradation from lignocellulosic feedstock

A new magnesium bisulfite pretreatment (MBSP) development for bio-ethanol production from corn stover

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