Nanocellulose production from recycled paper mill sludge using ozonation pretreatment followed by recyclable maleic acid hydrolysis

Peretz, Roi; Sterenzon, Elizaveta; Gerchman, Yoram; Kumar, V. Vinod; Luxbacher, Thomas; Mamane, Hadas

doi:10.1016/j.carbpol.2019.04.003

Cited by 47 publications

(16 citation statements)

References 60 publications

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“…Despite can be derived from various sources; the selection of the cellulose precursor for the extraction of CNCs has been actively investigated. As commonly reported in the literature, the extraction of CNCs were usually carried out by utilizing cellulosic-based materials such as waste papers, [22][23][24][25][26] wood pulps, 27,28 cellulose powder, 29 microcrystalline cellulose, 30 cotton, 31 hemp, 32 and sisal. 33 However, all these sources have their signicant manufacturing cycle in production of cellulose or recycling industries.…”

Section: Introductionmentioning

confidence: 99%

The valorization of municipal grass waste for the extraction of cellulose nanocrystals

et al. 2020

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Section: Introductionmentioning

confidence: 99%

The valorization of municipal grass waste for the extraction of cellulose nanocrystals

et al. 2020

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“…As shown in Fig. 2, the FTIR spectra showed that there were no signi cant differences between the crystals of FA and those of the standard [22]. The results of both HPLC and FTIR analyses conformed both the identity and the purity of FA, indicating that the recovered FA was identical to the FA standards, thus may suitably be recycled in additional hydrolysis rounds.…”

Section: Foroic Acid Recoverymentioning

confidence: 55%

A novel recyclable furoic acid-assisted pretreatment for sugarcane bagasse biorefinery in co-production of xylooligosaccharides and glucose

Dai

Huang

Jiang

et al. 2020

Preprint

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Background: Pretreatment is the key step for utilizing lignocellulosic biomass, which can extract cellulose from lignin and disrupt its recalcitrant crystalline structure to allow much more effective enzymatic hydrolysis; and organic acids pretreatment with dual benefic for generating xylooligosaccharides and boosting enzymatic hydrolysis has been widely used in adding values to lignocellulose materials. In this work, furoic acid, a novel recyclable organic acid as catalyst, was employed to pretreat sugarcane bagasse to recover the xylooligosaccharides fraction from hemicellulose and boost the subsequent cellulose saccharification. Results: The FA-assisted hydrolysis of sugarcane bagasse using 3% furoic acid at 170 oC for 15 min resulted in the highest xylooligosaccharides yield of 45.6%; subsequently, 83.1 g/L of glucose was harvested by a fed-batch operation with a solid loading of 15%. Overall, a total of 120 g of xylooligosaccharides and 335 g glucose could be collected from 1000 g sugarcane bagasse starting from the furoic acid pretreatment. Furthermore, furoic acid can be easily recovered by cooling crystallization.Conclusion: This work put forward a novel furoic acid pretreatment method to convert sugarcane bagasse into xylooligosaccharides and glucose, which provides a strategy that the sugar and nutraceutical industries can be used to reduce the production cost. The developed process showed that the yields of xylooligosaccharides and byproducts were controllable by shortening the reaction time; meanwhile, the recyclability of furoic acid also can potentially reduce the pretreatment cost and potentially replace the traditional mineral acids pretreatment.

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“…In contrast, CNC isolation could also be performed by direct acid hydrolysis (60% (v/v) H 2 SO 4 solution at 45°C for 1.5 h) without the alkali and bleaching pretreatment. However, the first maximum degradation temperature of the CNC product was at 220°C [12], which was relatively lower than most reported temperature of about 300°C [8,[13][14][15]. It was highly probable that direct and longer process of acid hydrolysis could have degraded the thermal stability of the CNC product [16].…”

Section: Introductionmentioning

confidence: 76%

Extraction of thermally stable cellulose nanocrystals in short processing time from waste newspaper by conventional acid hydrolysis

Van‐Pham

Pham

Tran

et al. 2020

Mater. Res. Express

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Motivated by many exclusive and useful features of cellulose nanocrystals (CNC) and the underutilized resource of waste newspaper, this study aimed to extract CNC from waste newspapers by means of alkali and bleaching treatments followed by acid hydrolysis. The morphological structure of the obtained CNC was analysed by optical microscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) methods. The remarkable removal of surface contamination and the reduction in fiber diameter during alkali and bleaching treatment were observed and the nano-dimension of the extracted CNC was revealed with the average diameter of 12.3±2.8 nm. Characterization of the extracted CNC showed a high whiteness index of 80%, and high transparency of about 80% of the light at 600 nm calculated for a 0.02 mm thick nanocellulose film. Fourier transform infrared spectroscopy (FTIR) indicated that lignin, hemicellulose and other coloring agents were successfully removed. A comparably high crystallinity index of 80.15% was calculated from x-ray diffraction data. Thermogravimetric analysis showed that the product had a typical maximum thermal degradation at 300°C. The analysis results indicated the successful extraction of good CNC from waste newspaper with the shortest processing time ever reported for acid hydrolysis with conventional alkali and bleaching pretreatment. The findings also strongly support for further research of nanocomposites reinforced by CNC produced from waste newspaper.

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Nanocellulose production from recycled paper mill sludge using ozonation pretreatment followed by recyclable maleic acid hydrolysis

Cited by 47 publications

References 60 publications

The valorization of municipal grass waste for the extraction of cellulose nanocrystals

The valorization of municipal grass waste for the extraction of cellulose nanocrystals

A novel recyclable furoic acid-assisted pretreatment for sugarcane bagasse biorefinery in co-production of xylooligosaccharides and glucose

Extraction of thermally stable cellulose nanocrystals in short processing time from waste newspaper by conventional acid hydrolysis

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