Hydrolysis of bamboo fiber cellulose in formic acid

Sun, Yuan; Lin, Lu; Deng, Haibo; Peng, Hong; Li, Jiazhe; Sun, Run Cang; Liu, Shijie

doi:10.1007/s11461-008-0072-1

Cited by 48 publications

(54 citation statements)

References 30 publications

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“…The saponifying impact of the mixed alkaline pre-treatment on SCB was verified by a 12% reduction in a band at 1730 cm −1 , which is attributed to saponification of the ester bonds, such as acetyl and uronic ester groups (Peng et al 2012). An increase in absorptions peaks at 1000 −1100 cm −1 in the spectrum of the pre-treated SCB solids demonstrated an increased concentration of cellulose in the pre-treated solid (Sun et al 2008), as already shown by compositional analysis (Table 4).…”

Section: Ft-ir-atr Spectroscopic Analysissupporting

confidence: 76%

Pre-treatment of sugarcane bagasse with a combination of sodium hydroxide and lime for improving the ruminal degradability: optimization of process parameters using response surface methodology

Ahmadi

Zamiri

Khorvash

et al. 2015

Journal of Applied Animal Research

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A three-factor, three-level, face-centred cubic design was adopted to investigate the effect of three pre-treatment parameters, namely sodium hydroxide-to-dry biomass ratio [0.00, 0.05, and 0.10 (w/w)], lime-to-dry biomass ratio [0.00, 0.05, and 0.10 (w/w)] and residence reaction time (24, 96, and 168 h), at moderate temperature (21°C) on 24-h cumulative gas production (GP 24 ) and delignification, as the response variables. Under the optimal pre-treatment conditions of NaOH-to-dry biomass ratio of 0.09 (w/w), lime-to-dry biomass ratio of 0.09 (w/w) and residence time of 160.3 h, the model predicted 151.6 mL gas/g organic matter (OM) versus the experimental value of 147.2 mL gas/g OM. Under the optimal conditions of NaOH-to-dry biomass ratio of 0.10 (w/w), lime-to-dry biomass ratio of 0.08 (w/w) and residence time of 156.8 h, sugarcane bagasse (SCB) was maximally delignified by 41.2%, whereas the model predicted 43.6% delignification. Under the optimal conditions determined for GP 24 , the neutral detergent fibre degradability of the pre-treated biomass after 24 and 48 h was 37.2 and 56.3%, respectively, a 1.90-fold and 1.58-fold over the untreated biomass, respectively. Overall, it was found that combined alkali treatment at optimal conditions effectively enhanced the ruminal degradability of SCB.

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Section: Ft-ir-atr Spectroscopic Analysissupporting

confidence: 76%

Pre-treatment of sugarcane bagasse with a combination of sodium hydroxide and lime for improving the ruminal degradability: optimization of process parameters using response surface methodology

Ahmadi

Zamiri

Khorvash

et al. 2015

Journal of Applied Animal Research

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“…( 1) where C r is the relative crystallinity, whereas F a and F c are the area of noncrystalline and crystal regions, respectively (Sun et al 2008). Each sample was measured at least twice to reduce errors.…”

Section: Methodsmentioning

confidence: 99%

Optimization of Selective Acid Hydrolysis of Cellulose for Microcrystalline Cellulose using FeCl3

Li¹,

Zhang²,

Zhang³

et al. 2014

BioResources

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In the process of acid hydrolysis of cellulose, hydrolyzing the amorphous regions while retaining the crystalline regions is the key technology for obtaining microcrystalline cellulose products. This paper investigated the influence of FeCl 3 on selective acid hydrolysis of crystalline regions and amorphous regions of cellulose. X-ray diffraction data indicated that FeCl 3 can enhance the selectivity of acid hydrolysis for amorphous regions of cellulose, thus improving the crystallinity of hydrocellulose. Meanwhile, the crystalline structure did not change. Response surface methodology (RSM) was employed to optimize the crystallinity of hydrocellulose with respect to FeCl 3 concentration, HCl concentration, reaction time, and temperature, and the relevant mathematical regression equation model was established. Under optimal conditions, the crystallinity of hydrocellulose was as high as 63.59% at 88.28 °C, 2.46 M HCl, 0.4 M FeCl 3 , and reaction duration of 64.02 min, which was in agreement with the predicted value.

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“…Bands at 1000 -1200 cm −1 were related to structural features of cellulose and hemicelluloses. The enhancement of absorption peaks at 1000 -1100 cm −1 after pretreatment indicate the increase in cellulose content in the solid residue [54]. The peak of O-H stretching at 3300 cm −1 and the peak of −CH 2 stretching near 2900 cm −1 are the distinguished features of cellulose.…”

Section: Ftir Spectroscopy Characterization Of Microwave Pretreated Efbmentioning

confidence: 97%

Microwave-Assisted Alkaline Pretreatment and Microwave Assisted Enzymatic Saccharification of Oil Palm Empty Fruit Bunch Fiber for Enhanced Fermentable Sugar Yield

Nomanbhay¹,

Hussain²,

Palanisamy³

2013

JSBS

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Lignocellulosic materials are promising alternative feedstocks for bioethanol production. However, the recalcitrant nature of lignocellulosic biomass necessitates an efficient pretreatment pretreatment step to improve the yield of fermentable sugars and maximizing the enzymatic hydrolysis efficiency. Microwave pretreatment may be a good alternative as it can reduce the pretreatment time and improve the enzymatic activity during hydrolysis. The overall goal of this paper is to expand the current state of knowledge on microwave-based pretreatment of lignocellulosic biomass and microwave assisted enzymatic reaction or Microwave Irradiation-Enzyme Coupling Catalysis (MIECC). In the present study, a comparison of microwave assisted alkali pretreatment was tried using Oil Palm empty fruit bunch. The microwave assisted alkali pretreatment of EFB using NaOH, significantly improved the enzymatic saccharification of EFB by removing more lignin and hemicellulose and increasing its accessibility to hydrolytic enzymes. The results showed that the optimum pretreatment condition was 3% (w/v) NaOH at 180 W for 12 minutes with the optimum component loss of lignin and holocellulose of about 74% and 24.5% respectively. The subsequent enzymatic saccharification of EFB pretreated by microwave assisted NaOH (3% w/v); resulted in 411 mg of reducing sugar per gram EFB at cellulose enzyme dosage of 20 FPU. The overall enhancement by the microwave treatment during the microwave assisted alkali pretreatment and microwave assisted enzymatic hydrolysis was 5.8 fold. The present study has highlighted the importance of well controlled microwave assisted enzymatic reaction to enhance the overall reaction rate of the process.

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Hydrolysis of bamboo fiber cellulose in formic acid

Cited by 48 publications

References 30 publications

Pre-treatment of sugarcane bagasse with a combination of sodium hydroxide and lime for improving the ruminal degradability: optimization of process parameters using response surface methodology

Pre-treatment of sugarcane bagasse with a combination of sodium hydroxide and lime for improving the ruminal degradability: optimization of process parameters using response surface methodology

Optimization of Selective Acid Hydrolysis of Cellulose for Microcrystalline Cellulose using FeCl3

Microwave-Assisted Alkaline Pretreatment and Microwave Assisted Enzymatic Saccharification of Oil Palm Empty Fruit Bunch Fiber for Enhanced Fermentable Sugar Yield

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