Hydrolysis of concentrated suspensions of steam pretreated Arundo donax

Bari, Isabella De; Liuzzi, Federico; Villone, A.; Braccio, Giacobbe

doi:10.1016/j.apenergy.2012.05.051

Cited by 64 publications

(41 citation statements)

References 35 publications

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“…Hence, the obtained glucose was clearly less than that of the xylose in the hydrolysate of CHER (Table 3). This was consistent with the results reported in previous studies (Bari et al 2013;Di Girolamo et al 2013). HMF and furfural are the main two fermentation inhibitors that have been seen to originate from the degradation of glucose and xylose following pretreatment under severe conditions (Shafiei et al 2015).…”

Section: Sugars and Inhibitorssupporting

confidence: 82%

Enhanced Biogas Yield of Chinese Herbal Medicine Extraction Residue by Hydrothermal Pretreatment

Wang

Zhang²,

Yan

et al. 2017

BioResources

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aChinese herbal medicine extraction residue (CHER) is a special organic waste produced in China. Because of the high content of lignocelluloses, CHER have a weak bioconversion efficiency for bio-products production. This study investigates the effect of a hydrothermal pretreatment (HTP, 140 to 220 °C, 15 min) on the organic matter solubilisation, biochemical methane potential, and methanation kinetics of CHER during anaerobic digestion (AD). The AD test was conducted with 5 g/L total solid at 35 °C for 30 d. The results showed that the HTP clearly improved the solubilisation of CHER, and the obtained soluble COD (%) reached over 30% (only 4.5% in untreated). Acetic acid, xylose, and glucose were found to be the main products in the hydrolysate. The methane yield and methanation speed of the treated CHER were also enhanced. The highest methane yield of 306 mL/g volatile solid was achieved at a HTP temperature of 180 °C, while the untreated control was only 175 mL/g VS. Moreover, a carbonisation phenomenon was observed at HTP temperatures over 200 °C, which resulted in a loss of organic matter and methane yield.

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Section: Sugars and Inhibitorssupporting

confidence: 82%

Enhanced Biogas Yield of Chinese Herbal Medicine Extraction Residue by Hydrothermal Pretreatment

Wang

Zhang²,

Yan

et al. 2017

BioResources

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“…De Bari et al (2013) achieved 80% hydrolysis using a 10% solids loading (steamexplosion pretreated A. donax) and approximately 39 FPU/g cellulose after more than 150 h of incubation at 50 °C (enzyme optimal temperature). In this study, at 10% of loading biomass, the same hydrolysis yield was shown using about 70 FPU/g cellulose in the half time (72 h) at 37 °C (Table 1).…”

Section: Effect Of Enzyme Loading and Solids Amount On Enzymatic Hydrmentioning

confidence: 99%

Effect of Cellulase, Substrate Concentrations, and Configuration Processes on Cellulosic Ethanol Production from Pretreated Arundo donax

Aliberti¹,

Ventorino²,

Robertiello³

et al. 2017

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Arundo donax was used to investigate the effect of the enzyme and substrate concentrations on hydrolysis, pre-hydrolysis and simultaneous saccharification and fermentation (PSSF), in comparison to simultaneous saccharification and fermentation (SSF). Hydrolysis was performed at 37 and 50 °C. At the highest biomass (10%) and enzyme (69.6 FPU/g cellulose) loadings, the highest glucose concentration (32.4 g/L) was obtained (at 50 °C). SSF resulted in a cellulose conversion (91.9%) and an ethanol concentration (19.8 g/L) higher than what was obtained using PSSF at 37 °C (86.9% and 18.8 g/L, respectively) and PSSF at 50 °C (81.6% and 17.7 g/L, respectively). A positive correlation between the cellulase concentration, cellulose conversion, and ethanol content was observed. In PSSF, the increase in the solids loadings caused a reduction in the % cellulose conversion, but the ethanol concentration in PSSF and SSF increased. SSF appeared to be the most advantageous process for bioethanol production from A. donax.

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“…In particular, the concentration of SA recovered from strain B. succiniciproducens BPP7 was notable after 24 h (glucose and xylose consumption of approximately 45%), increasing up to 4.38 ± 0.09 g/L (Y SA/G+X of 0.39 ± 0.010 g/g and Y SA/PB of 0.10 ± 0.002 g/g) and 6.06 ± 0.05 g/L (Y SA/G+X of 0.84 ± 0.017 g/g and Y SA/PB of 0.14 ± 0.001 g/g) after 48 h using PBMH and PBSMH, respectively (Table 2). However, in PBMH, there were no significant differences (p > 0.05) among the three sampling times (24,48, and 72 h), whereas in the PBSMH substrate, the SA production significantly decreased after 72 h ( Table 2). These results emphasized that the use of A. donax hydrolysate recovered by sedimentation under the gravity method promoted the fermentation activity of the strain B. succiniciproducens BPP7, showing the highest succinate production and yield.…”

Section: Sa Production and Optimizationmentioning

confidence: 91%

“…donax biomass, pretreated according to Garbero et al [23] and De Bari et al [24], was utilized as substrate in separate hydrolysis and fermentation (SHF). Hydrolysis was performed by suspending 20 g of pretreated biomass in 100 mL of sodium acetate buffer (0.05 M, pH 5.0) and adding the commercial cellulase mixture Cellic® CTec2, kindly provided by Novozymes (Bagsvaerd, Denmark), with a concentration of 70 FPU/g of pretreated biomass solids.…”

Section: Sa Production By Pretreated Lignocellulosic Biomassmentioning

confidence: 99%

Bio-Based Succinate Production from Arundo donax Hydrolysate with the New Natural Succinic Acid-Producing Strain Basfia succiniciproducens BPP7

et al. 2017

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Bio-based succinic acid production from lignocellulosic biomass is one of the attractive and prominent alternative technologies to overcome issues associated with the utilization of fossil sources. In this context, it is necessary to find new microorganisms that are able to efficiently ferment this recalcitrant feedstock. The ecological approach developed in this study enabled the isolation of Basfia succiniciproducens BPP7 from a complex rumen ecosystem. This new wild-type strain was able to synthesize up to 6.06 ± 0.05 g/L of succinate (corresponding to 0.84 ± 0.017 g of succinate per gram of consumed glucose + xylose and to 0.14 ± 0.001 g of succinate per gram of glucans + xylans present in the biomass before hydrolysis) from Arundo donax hydrolysate in separate hydrolysis and fermentation (SHF) experiments. Higher titers of succinic acid were obtained through the optimization of growth conditions. The optimal medium composition identified on the smaller scale was then used for 2.5-L batch experiments, which used A. donax hydrolysate and yeast extract as the main C and N sources, respectively. A maximal titer of 9.4 ± 0.4 g/L of succinic acid was obtained after 24 h. The overall results clearly demonstrate the potential of B. succiniciproducens BPP7 for succinate production.

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Hydrolysis of concentrated suspensions of steam pretreated Arundo donax

Cited by 64 publications

References 35 publications

Enhanced Biogas Yield of Chinese Herbal Medicine Extraction Residue by Hydrothermal Pretreatment

Enhanced Biogas Yield of Chinese Herbal Medicine Extraction Residue by Hydrothermal Pretreatment

Effect of Cellulase, Substrate Concentrations, and Configuration Processes on Cellulosic Ethanol Production from Pretreated Arundo donax

Bio-Based Succinate Production from Arundo donax Hydrolysate with the New Natural Succinic Acid-Producing Strain Basfia succiniciproducens BPP7

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