Biorefinery of Black Liquor from Bagasse Soda Pulping as Surface Coating on Recycled Based Paper | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| Article 4, Volume 32, Issue 4 - Serial Number 61, November 2017, Pages 498-508 PDF (923.96 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/ijwpr.2017.114917.1434 | ||
| Authors | ||
| Hossein Jalali Torshizi* 1; Raahil Chaalaakeh2 | ||
| 1Assist. Prof., Biorefinery Eng. Dept., Shahid Beheshti University, Iran | ||
| 2M.Sc., student, Biorefinery Eng. Dept., Shahid Beheshti University, Iran | ||
| Abstract | ||
| Recently, Biorefinery is highly focused as a predominant developer in Forest product industry. Pulping black liquor as a rich residual in biopolymers from plant biomasses, has a great potential in bioenergy and biomaterials. In this study, the effects of surface coating of black liquor from bagasse soda pulping (BLBSP) in raw and filtrated form (as 2.5 g. O.D) with different concentration (30, 37, 44 & repeated 44%) on recycled based paper and its properties were investigated. Totally, the BLBSP filtration improved the paper properties more than the raw type, due to its impurity and coarse materials extraction. Higher concentration and content of the applied coatings enhanced grammage (up to 44%) and reduced water absorption (to <30%), constantly, because of mostly hydrophobic material (lignin and minerals) accumulation which would increase the paper mass and would fill the porous structure, resulted in reduction in water adsorption capacity of the lignocellulosic network. But the optimum treatment respect to the tensile, burst and tear strengths was the lowest applied concentration, which are attributed to the easier BLBSP penetration into the paper structure and its contribution in bonding. Recycled paper usage in packaging purposes require compression and bending strengths that increased by the liquor concentrating as bending stiffness (up to >200%) and compressive crush resistance (up to >150%). In this regard, film formation, thickening the paper and also the effective role of lignin could be noted beside the bonding enhancement. Repeatedly application of the BLBSP no significantly improved the almost properties, but also decreased them. | ||
| Keywords | ||
| Biorefinery; Bagasse Soda Black Liquor; Paper Coating | ||
| References | ||
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