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Improved efficacy of ultrafiltered xylanase – pectinase concoction in biobleaching of plywood waste soda pulp

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ABSTRACT

The effect of ultrafiltered xylanase–pectinase concoction produced simultaneously by a bacterial isolate using agro-waste-based media was assessed in prebleaching of plywood waste pulp. Ultrafiltered enzymes caused 12.5% reduction in kappa number at reduced enzyme dose of xylanase–pectinase (4.0–0.8 IU) per gram of pulp under optimized conditions at pH 8.5, temperature 55 °C, and treatment period of 2 h. Using this methodology, amount of Cl2–ClO2 consumption can be reduced up to 30 and 28.86%. Significant improvement in physical and optical properties of pulp was obtained along with an additional reduction in BOD and COD values up to 18.13 and 21.66% using this novel biodelignification approach. This is the first report showing the advantages of using ultrafiltered xylanase–pectinase over crude enzymes in enhancing the bleaching capacity of pulp. This study focussing on the development of good quality paper with less pollution generating strategy will definitely prove a boon for industries.

No MeSH data available.


Glimpse of producing superior quality paper from plywood waste using UF xylano-pectinolytic enzymes with reduced generation of pollution
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Fig2: Glimpse of producing superior quality paper from plywood waste using UF xylano-pectinolytic enzymes with reduced generation of pollution

Mentions: Biobleaching of wheat straw SAQ pulp using xylanase from Bacillus stearothermophilus SDX resulted in 4.70, 5.91, 6.96, and 13.15% increase in viscosity, burst factor, breaking length, and tear factor, respectively (Garg et al. 2011). Lin et al. (2013) reported 4.65, 9.3, and 13.95% increase in bursting index after treatment of wheat straw SAQ pulp with pulpzyme HC, recombinant xylanase from B. halodurans and commercial xylanase AU-PE89, respectively. Biobleaching of eucalyptus kraft pulp with xylanase producing B. halodurans FNP 135 culture and produced by SmF and SSF resulted in 8.6 and 3.3% increase in viscosity, 20.7 and 17.5% increase in tear factor, 13.7 and 12% increase in burst factor, and 8.7 and 6.7% increase in breaking length, respectively (Sharma et al. 2015). Biobleaching of eucalyptus kraft pulp using xylanase and laccase resulted in 13, 49, 6.9, 23, and 11.68% increase in brightness, breaking length, burst factor, tear factor, and viscosity, respectively(Gupta et al. 2015). A glimpse of producing superior quality paper from plywood waste using UF xylano-pectinolytic enzymes with reduced generation of pollution has been completely depicted in Fig. 2.Fig. 2


Improved efficacy of ultrafiltered xylanase – pectinase concoction in biobleaching of plywood waste soda pulp
Glimpse of producing superior quality paper from plywood waste using UF xylano-pectinolytic enzymes with reduced generation of pollution
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5383790&req=5

Fig2: Glimpse of producing superior quality paper from plywood waste using UF xylano-pectinolytic enzymes with reduced generation of pollution
Mentions: Biobleaching of wheat straw SAQ pulp using xylanase from Bacillus stearothermophilus SDX resulted in 4.70, 5.91, 6.96, and 13.15% increase in viscosity, burst factor, breaking length, and tear factor, respectively (Garg et al. 2011). Lin et al. (2013) reported 4.65, 9.3, and 13.95% increase in bursting index after treatment of wheat straw SAQ pulp with pulpzyme HC, recombinant xylanase from B. halodurans and commercial xylanase AU-PE89, respectively. Biobleaching of eucalyptus kraft pulp with xylanase producing B. halodurans FNP 135 culture and produced by SmF and SSF resulted in 8.6 and 3.3% increase in viscosity, 20.7 and 17.5% increase in tear factor, 13.7 and 12% increase in burst factor, and 8.7 and 6.7% increase in breaking length, respectively (Sharma et al. 2015). Biobleaching of eucalyptus kraft pulp using xylanase and laccase resulted in 13, 49, 6.9, 23, and 11.68% increase in brightness, breaking length, burst factor, tear factor, and viscosity, respectively(Gupta et al. 2015). A glimpse of producing superior quality paper from plywood waste using UF xylano-pectinolytic enzymes with reduced generation of pollution has been completely depicted in Fig. 2.Fig. 2

View Article: PubMed Central - PubMed

ABSTRACT

The effect of ultrafiltered xylanase–pectinase concoction produced simultaneously by a bacterial isolate using agro-waste-based media was assessed in prebleaching of plywood waste pulp. Ultrafiltered enzymes caused 12.5% reduction in kappa number at reduced enzyme dose of xylanase–pectinase (4.0–0.8 IU) per gram of pulp under optimized conditions at pH 8.5, temperature 55 °C, and treatment period of 2 h. Using this methodology, amount of Cl2–ClO2 consumption can be reduced up to 30 and 28.86%. Significant improvement in physical and optical properties of pulp was obtained along with an additional reduction in BOD and COD values up to 18.13 and 21.66% using this novel biodelignification approach. This is the first report showing the advantages of using ultrafiltered xylanase–pectinase over crude enzymes in enhancing the bleaching capacity of pulp. This study focussing on the development of good quality paper with less pollution generating strategy will definitely prove a boon for industries.

No MeSH data available.