Studies on Ipomea carnea and Cannabis sativa as an alternative pulp blend for softwood: An optimization of kraft delignification process

Dutt, Dharm; Upadhyaya, J. S.; Tyagi, C. H.; Kumar, Amit; Lal, Mohan

doi:10.1016/j.indcrop.2008.02.001

Cited by 45 publications

(29 citation statements)

References 3 publications

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“…Dutt et al (2008) found fiber lengths in Ipomea carnea, Cannabis sativa, Picea abies, and Pinus kesiya to be 0.6, 1.8, 2.3, and 2.3 mm, respectively. It can be said that the length of the rind fibers of sorghum stalks (2.31 mm) make them a viable substitute in pulp production, replacing the above-mentioned species.…”

Section: Resultsmentioning

confidence: 92%

Identifying the Conditions Required for the NaOH Method for Producing Pulp and Paper from Sorghum Grown In Turkey

Gençer¹,

Şahin²

2015

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This study examines the possibilities of making pulp from sorghum grown in Bartın via the NaOH method. While setting the cooking conditions for producing pulp from annual plants, NaOH was used in quantities that amounted to 14, 16, 18, and 20% of the total weight of the dry sample. Optimum conditions were established relative to pulp yield, Kappa number, and a scoring table based on mechanical, optical, and physical values. Accordingly, optimum conditions for pulp production from sorghum stalks occurred when 20% NaOH was used at 120 °C, a 5:1 solution-tostalk ratio, and a cooking time of 60 min.

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Section: Resultsmentioning

confidence: 92%

Identifying the Conditions Required for the NaOH Method for Producing Pulp and Paper from Sorghum Grown In Turkey

Gençer¹,

Şahin²

2015

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“…This value negatively affects the tensile, tear, burst, and double fold resistance of paper (Hus et al 1975;Akgul and Tozluoglu 2009a). Elasticity coefficient is an important factor that has a positive effect on the mechanical strength due to a larger number of bonds between fibers (Saikia et al 1997;Dutt et al 2008). The elasticity coefficient of tea waste fibers was lower than that of hardwoods and softwoods.…”

Section: Chemical Compositions and Fiber Morphology Of Tea Wastesmentioning

confidence: 99%

Evaluation of Tea Wastes in Usage Pulp and Paper Production

Tutuş,

Kazaskeroğlu,

Çiçekler

2015

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The objective of this study was to characterize the properties of pulp and paper produced from tea (Camellia sinensis) wastes, an agricultural residue widely available in Turkey, using the kraft-anthraquinone (AQ) cooking method. The chemical components and fiber morphology of tea wastes were investigated. The results indicated that tea wastes had low holocellulose, cellulose, and α-cellulose contents and high lignin content. Also, the suitability of the fiber for pulp and paper production was examined, and the fiber length, fiber width, lumen diameter, and cell wall thickness were measured. According to these values, it was found that the strength properties of papers obtained from tea wastes were insufficient. Therefore, tea waste pulps were mixed with Turkish pine pulps at various ratios. Twelve different cooking experiments were performed on the tea wastes, and the cooking with the best pulp yield was used for mixing. The second cooking, with 0.1% AQ, gave the best yield (33.26%), an increase of about 3.51% compared to the first cooking with no AQ. The physical and optical properties of the papers were also examined. Results showed that paper properties were improved by increasing the Turkish pine pulp rate. Consequently, tea wastes can be used in pulp and paper production when combined with softwood pulps.

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“…To narrow the gap between demand and supply, many fast-growing annual and perennial plants with high biomass have been identified and their suitability for pulp production has been evaluated. These non-woody plants include: Hibiscus cannabinus and Hibiscus sabdariffa (Dutt et al 2009), Sesbania aculeata and Sesbania sesban , Cannabis sativa and Ipomea carnea (Dutt et al 2008), Arundo donax (Shatalov and Pereira 2005), lemon and sofia grasses (Kaur et al 2011;Kaur et al 2013), Cajanus cajan and Eulaliopsis binata (Dutt et al 2002;Dutt et al 2005), as well as agricultural residues such as wheat straw (Singh et al 2011), rice straw (Rodríguez et al 2008), and sugarcane bagasse (Agnihotri et al 2010), fast growing hardwoods such as Leucaena leucocephala and Anthocephalus cadamba (Lal et al 2010), and waste papers (Dutt et al 2012). Due to short growth cycles, low lignin, and high hemicellulose contents, non-woody plants have several advantages over woody plants, resulting in decreased energy and chemical consumption during the cooking process (Hurter and Riccio 1998).…”

Section: Introductionmentioning

confidence: 99%

Delignification of Phragmites karka – a Wetland Grass – by Soda Pulping Process

2013

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Phragmites karka, a common wetland grass, was delignified by the soda pulping process, and all the operating parameters were optimized. The effects of both anthraquinone and surfactant on pulp yield and kappa number at optimum pulping conditions were also investigated. The pulp was beaten at different beating levels to optimize different mechanical strength properties. A detailed morphological study of soda-AQ pulp of P. karka was conducted by scanning electron microscopy.

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Studies on Ipomea carnea and Cannabis sativa as an alternative pulp blend for softwood: An optimization of kraft delignification process

Cited by 45 publications

References 3 publications

Identifying the Conditions Required for the NaOH Method for Producing Pulp and Paper from Sorghum Grown In Turkey

Identifying the Conditions Required for the NaOH Method for Producing Pulp and Paper from Sorghum Grown In Turkey

Evaluation of Tea Wastes in Usage Pulp and Paper Production

Delignification of Phragmites karka – a Wetland Grass – by Soda Pulping Process

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