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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13374
Title: Studies on Hibiscus cannabinus, Hibiscus sabdariffa, and Cannabinus sativa pulp to be a substitute for softwood pulp- Part 2: SAS-AQ and NSSC-AQ delignification processes
Authors: Dutt D.
Upadhyaya J.S.
Tyagi C.H.
Published in: BioResources
Abstract: Hibiscus cannabinus, Cannabis sativa, and Hibiscus sabdariffa, fast growing productive annual plants, could provide fiber necessary to partially alleviate the world's fiber deficit. The present study aimed at producing high yield pulp and the best mechanical strength properties with minimum impact on environment by SAS-AQ, and NSSC-AQ pulping processes. A total alkali of 13% (as Na2O), an alkali ratio of 0.80, and a Na2SO3 charge 11.70% (as Na2O) were found optimum to reduce maximum kappa number. A lower kappa number and good strength properties were achieved by increasing total alkali and Na2SO3 charge. SAS-AQ pulps showed good response towards CEHH bleaching. The NSSC-AQ pulping was conducted at a total alkali charge of 8% (as Na2O) by varying the ratio of sulphite-to-carbonate (100:0-0:100), and cooking time (60-120 min) at 160°C. A ratio of sulphite-to-carbonate 60:40 was suitable for corrugating medium (cooking time 60 min), while a ratio of sulphite-to-carbonate 70:30 showed better strength properties (longer cooking time).
Citation: BioResources (2010), 5(4): 2137-2152
URI: http://repository.iitr.ac.in/handle/123456789/13374
Issue Date: 2010
Keywords: ASA-AQ pulping
C. sativa-true hemp
CEHH bleaching
H. cannabinus-kenaf
H. sabdariffa-roselle
NSSC-AQ pulping
Pulp properties
Waste liquor
ISSN: 19302126
Author Scopus IDs: 7005982560
8679068400
6602705260
Author Affiliations: Dutt, D., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, 247 001, India
Upadhyaya, J.S., 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: Dutt, D.; Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, 247 001, India; email: dharm_dutt@yahoo.com
Appears in Collections:Journal Publications [PT]

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