Effect of additives on fiber yield improvement for kraft pulping of kadam (Anthocephalus chinensis)

Biswas, Deboshree; Misbahuddin, M.; Roy, Utpal Singha; Francis, Raymond C.; Bose, Samar K.

doi:10.1016/j.biortech.2010.08.059

Cited by 15 publications

(11 citation statements)

References 8 publications

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“…The addition of 0.1% AQ increased both the screened yield and total yield of the stem and branch wood pulps. Similar results have been reported by several authors (Jiang, 1995;Çöpür et al, 2007;Akgül and Tozluoğlu, 2009;Biswas et al, 2011). This result could be attributed to carbohydrate retention increases with the addition of AQ (Li et al, 1998;Vaaler and Moe, 2001).…”

Section: Pulp and Paper Propertiessupporting

confidence: 88%

Utilization of the pomegranate tree (Punica granatum L.) in the paper industry

Gülsoy¹,

Pekgözlü²,

Aktaş³

2015

Turk J Agric For

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In this study, the chemical composition, fiber morphology, pulp, and paper properties of the pomegranate tree (Punica granatum L.) were determined. Stem and branch wood were analyzed separately. Kraft and kraft-anthraquinone (AQ) methods were used for the pulping processes. Stem wood showed superiority to branch wood with longer, wider, thicker-walled fibers. The holocellulose, α-cellulose, and lignin contents of branch and stem wood were 72.98%-73.50%, 38.37%-39.92%, and 21.04%-25.29%, respectively. In addition, the yield of kraft pulp made from stem wood was higher than that of branch wood. However, branch wood handsheets had higher strength properties and brightness than those of stem wood handsheets.

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Section: Pulp and Paper Propertiessupporting

confidence: 88%

Utilization of the pomegranate tree (Punica granatum L.) in the paper industry

Gülsoy¹,

Pekgözlü²,

Aktaş³

2015

Turk J Agric For

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“…Improving the viscosity by these additives preserved the degree of polymerization of the cellulose chains which resulted in higher viscosity by increasing the percentage of carbohydrate yield. Our data is in accordance with the literature (14,19,34,37,44,49,50) . The results pointed out that NaBH 4 preserved the carbohydrate chains and improved the viscosity of the pulps through to the lower kappa number (14,34) .…”

Section: Viscosity Of Pulpssupporting

confidence: 94%

“…The delignification selectivity is defined as the ratio of dissolved lignin to dissolved carbohydrates. It was calculated in Table 3 as mentioned by Biswas et al (50) .The amount of lignin removed by AQ or NaBH 4 is higher than that of Kraft pulp in both B/L ratios due to the delignification effect of these additives while PS retarded it. On the other hand, the carbohydrate loss was decreased with AQ, PS and NaBH 4 addition.…”

Section: Delignification Selectivitymentioning

confidence: 95%

Modification of Egyptian Bagasse Kraft Pulping Using Yield - increasing Additives Ι-Effect on Chemical Properties

2014

Egypt. J. Chem.

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AGASSE is one of the potential raw materials for pulp in Egypt. So, our target is to improve the chemical properties of Kraft pulp using yield-increasing additives as anthraquinone (AQ), polysulfide (PS) and sodium borohydride (NaBH 4 ). The effect of the bagasse to liquor ratio B/L ratio was also examined. The yield gains for AQ, PS, NaBH 4 , AQ-PS and AQ-NaBH 4 were 4.73%, 6.46%, 2.99%, 12.15% and 4.05%, respectively for 1:4 B/L ratio. While the yield gains at 1:10 B/L ratio were 1.42%, 2.65%, 5.2%, 6.9% and 5.3%, respectively. Combination of AQ-PS gave synergistic effect. AQ, NaBH 4 and AQ-NaBH 4 reduced the kappa number by 7%, 14%, 9%, 4.48%, 40.3% and 5.95% for 1:4 and 1:10 B/L ratios, respectively. More dissolution of lignin was promoted at higher B/L ratio. All additives preserved the carbohydrate yield more than the Kraft one, and showed higher delignification selectivity except for PS.

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“…A significant improvement in glucan recovery was achieved when 0.03-0.15% of AQ was added in the alkali pretreatment. The increased yields may be explained that AQ could block peeling reactions by oxidizing polysaccharide end groups (Biswas et al, 2011). For xylan recovery yields, addition of AQ resulted in slightly lower recovery yields compared to sodium hydroxide pretreatment without cooking additives.…”

Section: Sodium Hydroxide Pretreatment With Cooking Additivesmentioning

confidence: 98%