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Sanjay Naithani , P. K. Pande

Abstract

Lantana camara Linn. Is a noxious weed posing a serious threat to the ecology. It demands concrete efforts for its management. L. camara was evaluated for its pulp and paper making properties. Data on chemical constituents, fibre dimensions, unbleached, bleached yield and physical strength properties of pulp sheets were obtained. Parameters of proximate chemicals and fibre morphology were non-significantly different for samples and replications (α = 0.05). The unbleached pulp yields under different pulping process were 50.5-44.6%. Laboratory hand made pulp sheets with adequate strength properties were obtained from soda, soda-sulphite and kraft pulps prepared from L. camara plant material.

Keywords

Lantana camara, Fibre Morphology, Kappa Number, Lignin, Strength Properties,
Pulp

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P. K. Pande , Sanjay Naithani , Vimal Kothiyal , S. S. Mohanta , Neena Juyal , Rajnesh Rawat

Abstract

Within and among tree variations in physico-chemical and anatomical properties of seed raised plantation wood of Leucaena leucocephala have been investigated. Within tree variation in specific gravity, fibre length and fibre length/diameter ratio were significant due to height. The variation in anatomical properties and ratios in radial direction were non-significant. Within tree variation were significant between bole and twigs. Inter-tree variations for wood anatomical properties were also significant and accounted for genetic variability in trees for wood traits. Site quality also affected anatomical properties and pulping and paper quality ratios significantly. Lignin content (%) significantly varied with reference to height and also shown significant inter-tree variation. Lignin content (%) was significantly positively correlated with fibre wall thickness. Extractives had shown non-significant intra and inter-tree variations. Most of the anatomical characters shown significant positive correlation to each other. Vessel member dimensions shown significant negative correlation with specific gravity.

Keywords

Leucaena leucocephala, Physico-chemical Properties, Intra- and Inter-tree Variation

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S. P. Singh , Sanjay Naithani

Abstract

Bamboo contributes as a source of long fiber in the pulp and paper furnish. The physical and chemical characteristic of bamboo as a raw material varied form species to species. The raw material having low lignin content reduces chemical consumption and pollution load during pulping and bleaching whereas high holocellulose content results in more productivity. Anatomical characters like fibre morphology is one of the important character which plays very important role on the structure and properties of the end products like paper and textile. The ratio of length and wall thickness affect the flexibility and collapsibility of fiber, which inturn reduces the energy requirement during beating. There is need to fill up the gap between demand and supply by raising quality bamboo.

Keywords

Bamboo, Raw Material, Paper & Pulp Industry

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P. L. Soni , Sanjay Naithani , P. K. Gupta , Amit Bhatt , Ritu Khullar

Abstract

Utilization of Lantana camara can be an effective method for managing the weed. It is of potential economic value as it contains appreciable quantity of cellulosic fibres, have excellent strength properties, but till date not been exploited commercially. Owing to the presence of fibres, L. camara has potential to be utilized for making value added products such as α- cellulose and its derivatives, hand made paper, wood composites (which are good substitute of solid wood depending upon the end use) and furniture. Preliminary studies conducted have shown that Lantana camara contains ∼66 % holocellulose and ∼27% lignin. The average fibre length is 912μ with fibre diameter ∼22μ. α-Cellulose was isolated from L. camara with product yield ∼40%, brightness ∼80% at ∼95% purity having negligible ash content. α-Cellulose isolated from L. camara was derivatized to prepare water soluble carboxymethyl cellulose (CMC) having DS of 1.22, viscosity 600 cps (1% solution) and 7500 cps (2% solution).

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Bhawana Bisht Kweera ¹, Sanjay Naithani ²

Affiliations
1 Graphic Era University, Dehradun, IN
2 Forest Research Institute, Dehradun, IN

Abstract

In this present paper a study has been carried out to develop an approach of minimum impact on environment during pulping and bleaching of Eucalyptus tereticornis. A new chemical additive (LpH) was used during pulping followed by single stage oxygen delignification and H-H-P sequence produced a pulp of higher pulp-yield, low kappa number, high brightness and better strength properties. In comparison to traditional modified cooking for lowering lignin content in pulp which are capital intensive additive pulping using a new chemical additive was preferred as a low cost alternatives. Among the addition of various doses of chemical additive the best results were obtained at 0.5% chemical additive dose .So the optimized condition for additive dose addition was 0.5%. In adopting bleaching sequence, OHHP sequence gave better strength properties, brightness in comparison to CEH sequence.

Keywords

Extended Delignification, Chemical Additive (LpH), Kappa Number, Chelating Agent.

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Bhawana Kweera ¹, Sanjay Naithani ², Neetu Sharma ¹

Affiliations
1 Graphic Era University, Dehra Dun Uttarakhand, IN
2 Forest Research Institute, Dehra Dun-248006 Uttarakhand, IN

Abstract

The pulp and paper industry has been recognized as one of the highly polluting industrial sectors in the country. In the present paper attempt had to be made to show the effectiveness of chemical additive (Phthalic Anhydride) in reduction of COD and BOD which was used during pulping process. COD and BOD values of control spent liquor samples (without additive) were on slightly higher side in comparison to the spent liquor samples, where chemical additive phthalic anhydride was added with pulping chemicals. The reduction in BOD was due to stabilization of carbohydrates against degradation; as a result less amount of hemicellulose comes in spent liquor after pulping, which decreases the BOD values. Hemicellulose is a main constituent, which is responsible for increasing the BOD values; because lignin is refractive material and it does not take part in BOD.

Keywords

Sulfidity, Chemical Additive, Spent Liquor, Total Active Alkali.

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Varun Kumar ¹, Nirmal Sudhir Kumar Harsh ¹, Sanjay Naithani ², Bipin Prakash Thapliyal ³, Shrikant Sharma ⁴

Affiliations
1 Forest Pathology Division, Forest Research Institute, Dehradun 248 006, IN
2 Cellulose and Paper Division, Forest Research Institute, Dehradun 248 006, IN
3 Central Pulp and Paper Research Institute, Saharanpur 247 001, IN
4 Ch Kaliram Degree College, Nagal, Saharanpur 247 001, IN

Abstract

A remarkable yield of an alkali-thermo-tolerant endoglucanase (2.93 IU/ml) was obtained from a white rot fungus, Funalia leonina through fermentation process in solid state, optimized by response surface methodology. The three test variables, viz. pH of medium, incubation temperature and incubation time were optimized as they have significant effect on enzyme production. After solving the model equation, the optimum values of medium pH, incubation temperature and incubation period were found to be 5.8, 34°C and 10 days respectively, for maximum endoglucanase production. The consequence of culture preservation medium on enzyme production capacity was also studied and wheat bran agar medium was found the most suitable medium for culture preservation.

Keywords

Endoglucanase, Funalia leonina, Preservation Medium, Response Surface Methodology.

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