Ultrafiltered biopulping strategy for the production of good quality pulp and paper from sugarcane bagasse

Varghese, Libin Mathew; Nagpal, Raksha; Singh, Avtar; Mishra, O. P.; Bhardwaj, Nishi Kant; Mahajan, Ritu

doi:10.1007/s11356-020-11102-6

Cited by 9 publications

(6 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 Process overview for pulping of mechanically de-structuredxylanase-treated wood chips (1st step: mechanical treatment was performed with Impressafiner, 2nd step: mechanically treated wood chips were treated with xylanase dose of 0.005 g/g (oven-dry basis), 3rd step: Kraft puling process) time of 180 min. Similarly, the xylano-pectinolytic treatment also reduced the requirement of active alkali by 15% to attain the similar kappa number as obtained by 100% active alkali (Varghese et al 2020b). In another study, wheat straw was pretreated with xylano-pectinolytic concoction with xylanase dose of 400 IU/g oven-dry wheat straw and pectinase dose of 120 IU/g oven-dry wheat straw at temperature 55 °C for 3 h. The enzymatic pretreatment reduced the kappa number by 16.47% while the pulp brightness was improved by 17.20%.…”

Section: Pulping Of Xylanase Pretreated De-structured Wood Chips Of L Leucocephalamentioning

confidence: 77%

See 1 more Smart Citation

Influence of mechanical operation on the biodelignification of Leucaena leucocephala by xylanase treatment

et al. 2021

View full text Add to dashboard Cite

This study aimed at energy reduction during pulping of L. leucocephala by passing the wood chips through an impressafiner followed by xylanase pretreatment. An impressafiner compressed the chips and converted them into spongy materials. Wood chips of L. leucocephala with or without de-structuring and de-structured wood chips followed by enzymatic treatment were subjected to Kraft pulping at different temperatures varying from 135 to 170 °C and active alkali varying from 12 to 20% (as Na 2 O) to observe effect on screened pulp yield and kappa number. The de-structured wood chips followed by enzymatic treatment produced a pulp yield of 48.2% and kappa number 18.6. L. leucocephala without de-structuring produced a pulp yield of 50.1% and kappa number 23.7. When the pulp was subjected to oxygen delignification to reduce kappa number in the vicinity of 18.6, pulp showed shrinkage by 6.64% compared to Kraft pulp of de-structured wood chips followed by enzymatic treatment. Kraft pulp produced from de-structured wood chips of L. leucocephala followed by enzymatic treatment showed net saving of US$ 163.15 per digester over Kraft pulp produced without de-structuring of wood chips of L. leucocephala. Moreover, the pulp obtained by de-structuring followed by enzymatic treatment showed improvement in pulp brightness and physical strength properties including tensile, tear, and burst index significantly compared to pulp obtained without de-structuring.

show abstract

Section: Pulping Of Xylanase Pretreated De-structured Wood Chips Of L Leucocephalamentioning

confidence: 77%

“…respectively, compared to control (without xylanase pretreatment) Varghese et al (2020b). carried out the pretreatment of sugarcane bagasse with xylano-pectinolytic enzyme before chemical pulping and found 13.55%, 40.21%, 19.04%, and 42.5% improvement in breaking length, burst index, tear index, and double fold numbers, respectively.…”

mentioning

confidence: 99%

Influence of mechanical operation on the biodelignification of Leucaena leucocephala by xylanase treatment

et al. 2021

View full text Add to dashboard Cite

show abstract

“…After extraction, the materials presented a well-defined fiber shape, thus revealing good fractionation of the acacia wood; lignin was successfully removed (Figure b,c). Once lignin was removed, the fiber bundles were disrupted thus exposing the cellulose fibrils; high deterioration of the cell walls resulted in an increase of the surface area …”

Section: Resultsmentioning

confidence: 99%

“…Once lignin was removed, the fiber bundles were disrupted thus exposing the cellulose fibrils; high deterioration of the cell walls resulted in an increase of the surface area. 33 3.1.1. Characterization of the Lignin-Rich Fractions.…”

Section: Resultsmentioning

confidence: 99%

Acacia Wood Fractionation Using Deep Eutectic Solvents: Extraction, Recovery, and Characterization of the Different Fractions

et al. 2022

View full text Add to dashboard Cite

The selective extraction and recovery of different lignocellulosic molecules of interest from forestry residues is increasing every day not only to satisfy the needs of driving a society toward more sustainable approaches and materials (rethinking waste as a valuable resource) but also because lignocellulosic molecules have several applications. For this purpose, the development of new sustainable and ecologically benign extraction approaches has grown significantly. Deep eutectic solvents (DESs) appear as a promising alternative for the processing and manipulation of biomass. In the present study, a DES formed using choline chloride and levulinic acid (ChCl:LA) was studied to fractionate lignocellulosic residues of acacia wood ( Acacia dealbata Link), an invasive species in Portugal. Different parameters, such as temperature and extraction time, were optimized to enhance the yield and purity of recovered cellulose and lignin fractions. DESs containing LA were found to be promising solvent systems, as the hydrogen bond donor was considered relevant in relation to lignin extraction and cellulose concentration. On the other hand, the increase in temperature and extraction time increases the amount of extracted material from biomass but affects the purity of lignin. The most promising DES system, ChCl:LA in a ratio of 1:3, was found to not significantly depolymerize the extracted lignin, which presented a similar molecular weight to a kraft lignin. Additionally, the 31 P NMR results revealed that the extracted lignin has a high content of phenolic OH groups, which favor its reactivity. A mixture of ChCl:LA may be considered a fully renewable solvent, and the formed DES presents good potential to fractionate wood residues.

show abstract

“…[14] At present, bagasse is widely used in the pulp and paper and biorefinery industries. [15,16] However, the lignin in bagasse is produced as a by-product in those industries and is usually used as a low-value fuel, becoming an obstacle for comprehensive utilization of bagasse resources. [17] Therefore, methods to achieve the high-value conversion and utilization of lignin are highly desired.…”

Section: Introductionmentioning

confidence: 99%

UV‐Shielding Performance and Color of Lignin and its Application to Sunscreen

Zhao

Song

et al. 2021

Macro Materials & Eng

View full text Add to dashboard Cite

The balance between sunscreen performance and color is a main obstacle in the preparation of high-quality lignin-based sunscreens. In this study, five lignin samples (i.e., NaOH-L, EG-L, G-L, 1,3-PDO-L, and 1,4-BDO-L) are extracted from sugarcane bagasse by using five different solvent systems. The lignin extracted by organic solvents clearly shows light color and excellent UV-shielding performance, and the 1,3-PDO-L sample reveals the lowest total color difference (𝚫E is 30.4) and highest sun protection factor (SPF 3.99) among the samples obtained. The SPF of commercial facial creams significantly increases after addition of 5 wt% lignin samples, and the colors of these creams are lighter than that of 10 wt% lignin-modified cream samples. Moreover, the lignin-modified creams exhibit excellent broad-spectrum UV absorbency. The synergistic effects of lignin and the active substances of commercial sunscreen dramatically enhance the UV shielding effect of the commercial sunscreen. The aging test confirms that the lignin-based sunscreens have good photostability. This study provides a reliable reference for the development of lignin-based sunscreens and high-value utilization of lignin.

show abstract

Ultrafiltered biopulping strategy for the production of good quality pulp and paper from sugarcane bagasse

Cited by 9 publications

References 17 publications

Influence of mechanical operation on the biodelignification of Leucaena leucocephala by xylanase treatment

Influence of mechanical operation on the biodelignification of Leucaena leucocephala by xylanase treatment

Acacia Wood Fractionation Using Deep Eutectic Solvents: Extraction, Recovery, and Characterization of the Different Fractions

UV‐Shielding Performance and Color of Lignin and its Application to Sunscreen

Contact Info

Product

Resources

About