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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13307
Title: Optimization of soda pulping process of lignocellulosic residues of lemon and sofia grasses produced after steam distillation
Authors: Kaur H.
Dutt D.
Tyagi C.H.
Published in: BioResources
Abstract: Sofia (Cymbopogon martini), and lemon (Cymbopogon flexuosus) grasses, are exclusively cultivated for extraction of important lemongrass and palma rosa oils. Lignocellulosic residue (LCR) of sofia and lemon grasses left after steam distillation can successfully be used for the production of chemical grade pulp. Steam distillation mitigates the problem of mass transfer, and facilitates the faster penetration of cooking liquor by leaching out a part of extraneous components. Sofia grass produces a pulp yield of 43.7% of kappa number 20 at an active alkali dose of 14% (as Na 2O), maximum cooking temperature of 160 °C and cooking time 90 min. Likewise, lemon grass produces a pulp yield of 41.4% of kappa number 12.5 under the same conditions except temperature (150 °C) by a soda pulping process. Addition of 0.1% AQ at optimum cooking conditions reduces kappa number by 26 and 8% for sofia and lemon grasses with insignificant increase in pulp yield i.e. 0.2 and 0.4% for sofia and lemon grasses, respectively. The mechanical strength properties of lemon grass soda-AQ pulp are better than sofia grass. Bauer-McNett fiber classification further validates that +20 fractions are more (62.63%) in lemon grass than in sofia grass (42.72%).
Citation: BioResources (2011), 6(1): 103-120
URI: http://repository.iitr.ac.in/handle/123456789/13307
Issue Date: 2011
Keywords: Anthraquinone (AQ)
Cymbopogon flexuosus (lemon grass)
Cymbopogon martini (sofia grass)
Paper properties
Scanning electron microscopy (SEM)
Soda pulping
ISSN: 19302126
Author Scopus IDs: 55553726762
7005982560
6602705260
Author Affiliations: Kaur, H., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247 001, India
Dutt, D., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247 001, India
Tyagi, C.H., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247 001, India
Corresponding Author: Kaur, H.; Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247 001, India; email: harjeet.iitr@gmail.com
Appears in Collections:Journal Publications [PT]

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