Improved methods for the determination of drying conditions and fraction insoluble solids (FIS) in biomass pretreatment slurry

Sluiter, Amie; Sluiter, Justin; Wolfrum, Edward J.; Reed, Michelle; Ness, Ryan; Scarlata, Christopher J.; Henry, Jeanette

doi:10.1016/j.biombioe.2016.05.027

Cited by 237 publications

(324 citation statements)

References 10 publications

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“…Cellulose, hemicellulose, lignin components, and extractive content in rice hulls were measured based on a method suggested by Li et al The moisture content of rice hulls was determined gravimetrically after drying at 105°C …”

Section: Discussionmentioning

confidence: 99%

Ethanol production from rice hull using Pichia stipitis and optimization of acid pretreatment and detoxification processes

Germeç

Kartal

Bilgic

et al. 2016

Biotechnology Progress

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The goal of this study was to produce ethanol from rice hull hydrolysates (RHHs) using Pichia stipitis strains and to optimize dilute acid hydrolysis and detoxification processes by response surface methodology (RSM). The optimized conditions were found as 127.14°C, solid:liquid ratio of 1:10.44 (w/v), acid ratio of 2.52% (w/v), and hydrolysis time of 22.01 min. At these conditions, the fermentable sugar concentration was 21.87 g/L. Additionally, the nondetoxified RHH at optimized conditions contained 865.2 mg/L phenolics, 24.06 g/L fermentable sugar, no hydroxymethylfurfural (HMF), 1.62 g/L acetate, 0.36 g/L lactate, 1.89 g/L glucose, and 13.49 g/L fructose + xylose. Furthermore, RHH was detoxified with various methods and the best procedures were found to be neutralization with CaO or charcoal treatment in terms of the reduction of inhibitory compounds as compared to nondetoxified RHH. After detoxification procedures, the content of hydrolysates consisted of 557.2 and 203.1 mg/L phenolics, 19.7 and 21.60 g/L fermentable sugar, no HMF, 0.98 and 1.39 g/L acetate, 0 and 0.04 g/L lactate, 1.13 and 1.03 g/L glucose, and 8.46 and 12.09 g/L fructose + xylose, respectively. Moreover, the base-line mediums (control), and nondetoxified and detoxified hydrolysates were used to produce ethanol by using P. stipitis strains. The highest yields except that of base-line mediums were achieved using neutralization (35.69 and 38.33% by P. stipitis ATCC 58784 and ATCC 58785, respectively) and charcoal (37.55% by P. stipitis ATCC 58785) detoxification methods. Results showed that the rice hull can be utilized as a good feedstock for ethanol production using P. stipitis. © 2016 American Institute of Chemical Engineers Biotechnol. Prog., 32:872-882, 2016.

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Section: Discussionmentioning

confidence: 99%

Ethanol production from rice hull using Pichia stipitis and optimization of acid pretreatment and detoxification processes

Germeç

Kartal

Bilgic

et al. 2016

Biotechnology Progress

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“…The pulp was reduced to a particle size smaller than 2 mm using a knife mill. The chemical composition of the eucalyptus pulp was 75.6% ± 2.3% cellulose, 14.6% ± 0.6% hemicellulose, 6.7% ± 1.2% lignin, and 1.1% ± 0.2% ash, determined according to the methodology of NREL . The commercial enzyme preparation Cellic CTec3 (206 FPU/g, 122 mg protein/g) was obtained from Novozymes (Bagsvaerd, Denmark).…”

Section: Methodsmentioning

confidence: 99%

A new approach to obtain cellulose nanocrystals and ethanol from eucalyptus cellulose pulp via the biochemical pathway

Bondancia

Mattoso

Marconcini

et al. 2017

Biotechnology Progress

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The feasibility of integration of cellulosic ethanol production with the manufacture of cellulose nanofibers (CNF) and cellulose nanocrystals (CNC) was evaluated using eucalyptus cellulose pulp as feedstock and employing the biochemical route alone. For the enzymatic hydrolysis step, experimental central composite design (CCD) methodology was used as a tool to evaluate the effects of solids loading (SL) and enzymatic loading (EL) on glucose release and cellulose conversion. Glucose concentrations from 45 to 125 g/L were obtained after 24 h, with cellulose conversions from 35 to 96%. Validation of the statistical model was performed at SL of 20% and EL of 10 mg protein/g, which was defined by the desirability function as the optimum condition. The sugars released were used for the production of ethanol by Saccharomyces cerevisiae, resulting in 62.1 g/L ethanol after 8 h (yield of 95.5%). For all the CCD experimental conditions, the residual solids presented CNF characteristics. Moreover, the use of a new strategy with temperature reduction from 50 to 35°C after 24 h of enzymatic hydrolysis enabled CNC to be obtained after 144 h. The CNC showed a crystallinity index of 83%, length of 260 nm, diameter of 15 nm, and aspect ratio (L/D) of 15. These characteristics are suitable for many applications, such as reinforcement in polymeric materials and other lower volume higher value bio-based products. The findings indicate the viability of obtaining ethanol and CNC using the biochemical route exclusively, potentially contributing to the future implementation of forest biorefineries. © 2017 American Institute of Chemical Engineers Biotechnol. Prog., 33:1085-1095, 2017.

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“…It was first depithed and cut into small pieces (<20 mm). Next, its non‐structural materials and extractives were extracted by ethanol and water using a Soxhlet apparatus based on a standard procedure (NREL/TP‐510‐42619) . Having done this stage, in order to remove hemicellulose, hot water pre‐hydrolysis was conducted in a stainless steel mini‐batch reactor .…”

Section: Methodsmentioning

confidence: 99%

Properties investigation of recycled polylactic acid reinforced by cellulose nanofibrils isolated from bagasse

et al. 2017

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In this research, an industrial‐scale approach was developed for preparing bio‐nanocomposites from recycled polylactic acid (rPLA) and cellulose nanofibrils (CNFs). In this regard, several steps were conducted consisting of extracting CNFs, preparing CNF/rPLA master batch, and melt compounding which was finally followed by compression molding. The influence of adding CNFs on rPLA properties was investigated by morphological, mechanical, thermo‐mechanical, and degradability studies. Images from scanning electron microscopy (SEM) revealed an increase in the fracture surface roughness of rPLA after adding CNFs. In addition, compared to unreinforced rPLA, the modulus and strength of bio‐nanocomposites containing 3 wt% CNFs were enhanced from 527.5 and 23.9 MPa to 716.5 and 32.6 MPa, respectively. Other mechanical properties including elongation at break and work of fracture were decreased by 35.5 and 33% at this CNF percentage. Furthermore, the storage modulus, obtained from dynamic mechanical analysis (DMA), was significantly improved from 1,024 to 8,214 MPa after adding 3 wt % CNF. Similarly, at this CNF percentage, glass transition temperature (Tg) was enhanced from 59.5 to 64°C. According to biodegradation study, the highest biodegradability resistance was also obtained for bio‐nanocomposite containing 3 wt % CNF. POLYM. COMPOS., 39:3740–3749, 2018. © 2017 Society of Plastics Engineers

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Improved methods for the determination of drying conditions and fraction insoluble solids (FIS) in biomass pretreatment slurry

Cited by 237 publications

References 10 publications

Ethanol production from rice hull using Pichia stipitis and optimization of acid pretreatment and detoxification processes

Ethanol production from rice hull using Pichia stipitis and optimization of acid pretreatment and detoxification processes

A new approach to obtain cellulose nanocrystals and ethanol from eucalyptus cellulose pulp via the biochemical pathway

Properties investigation of recycled polylactic acid reinforced by cellulose nanofibrils isolated from bagasse

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