Cellulosic pulp from Leucaena diversifolia by soda-ethanol pulping process.

Abstract A selection of the best wood raw materials for cellulose pulp and papermaking from five varieties of the Leucaena has been made ( Leucaena diversifolia , Leucaena collinsii and three varieties of Leucaena leucocephala ) with growth periods of one, two and three years. In accordance with biomass production and the features of the raw materials and cellulose pulp obtained, L. diversifolia in its second year of growth was selected as the most suitable material for pulp and papermaking. Pulping of L. diversifolia by soda–ethanol was studied using an experimental design in order to investigate the effects of cooking variables: temperature, time, soda concentration, ethanol concentration and wash-disintegrate temperature on the chemical composition of the obtained pulps (yield, kappa number, viscosity, solubles substances, lignin, holocellulose and α-cellulose contents) and the physico-chemical characteristics of paper sheets (tensile index). The results were evaluated using the response surface methodology. The optimum pulping conditions were established for this lignocellulosic material, using the model predictions. The pulp obtained at these conditions has suitable chemical (pulp) and physical (paper sheets) characteristics: yield (46.5%), 1%NaOH solubles (3.04%), hot water solubles (0.63%), ethanol–benzene extractives (0.44%), holocellulose contents (96.7%), α-cellulose contents (75.8%), lignin contents (0.85%), viscosity (1367) kappa number (15.2) and tensile index (19.2 kN m/kg).

[1]  F. Rodríguez,et al.  Ethanol-based pulping from Cynara cardunculus L , 2005 .

[2]  P. Das,et al.  Chromium, nickel and zinc tolerance in Leucaena leucocephalla (K8) , 1999 .

[4]  Esa Muurinen,et al.  Organosolv pulping : a review and distillation study related to peroxyacid pulping , 2000 .

[5]  R. S. Malik,et al.  Studies on effect of growth factor on morphological, chemical and pulp and paper making characteristics and its impact on fluff generation , 2007 .

[6]  A. A. Shatalov,et al.  Kinetics of organosolv delignification of fibre crop Arundo donax L , 2005 .

[7]  R. S. Malik,et al.  Morphological , anatomical and chemical characteristics of Leucaena leucocephala and its impact on pulp and paper making properties , 2004 .

[8]  José Luis Gómez Ariza,et al.  Ethanol Pulping from Tagasaste (Chamaecytisus proliferus L.F. ssp palmensis). A New Promising Source for Cellulose Pulp , 2004 .

[9]  M. Díaz,et al.  Leucaena species valoration for biomass and paper production in 1 and 2 year harvest. , 2008, Bioresource technology.

[10]  Z. Li,et al.  Kinetics of delignification and cellulose degradation during kraft pulping with polysulphide and anthraquinone , 2002 .

[11]  M. Díaz,et al.  Variations in fiber length and some pulp chemical properties of Leucaena varieties , 2007 .

[12]  P. Singh,et al.  Effect of leucaena mulch on soil-water use and wheat yield , 1998 .

[13]  L. E. Wise,et al.  A CHLORITE HOLOCELLULOSE, ITS FRACTIONATION AND BEARING ON SUMMATIVE WOOD ANALYSIS AND STUDIES ON THE HEMICELLULOSES , 1946 .

[14]  S. Mansfield,et al.  Wood Fiber Quality and Kraft Pulping Efficiencies of Trembling Aspen (Populus tremuloides Michx) Clones , 2007 .

[15]  N. Dickinson,et al.  Interactions between earthworms, trees, soil nutrition and metal mobility in amended Pb/Zn mine tailings from Guangdong, China , 2003 .

[16]  Roger A. Sedjo,et al.  Biotech and planted trees: some economic and regulatory issues , 2003 .

[17]  O. Kordsachia,et al.  Alkaline pulping of some eucalypts from Sudan. , 2006, Bioresource technology.

[18]  José Luis Gómez Ariza,et al.  Pulp and Paper from Tagasaste (Chamaecytisus Proliferus L.F. SSP. Palmensis) , 2004 .

[19]  J. Labidi,et al.  Miscanthus sinensis fractionation by different reagents , 2010 .

[20]  B. Vanlauwe,et al.  Recovery of Leucaena and Dactyladenia Residue Nitrogen-15 in Alley Cropping Systems , 1998 .

[21]  C. Ververis,et al.  Fiber dimensions, lignin and cellulose content of various plant materials and their suitability for paper production , 2004 .

[22]  M. Amaral,et al.  Cynara cardunculus L. alkaline pulps: alternatives fibres for paper and paperboard production. , 2007, Bioresource technology.

[23]  Soo-Jeong Shin,et al.  Soda Pulping of Hardwoods Catalyzed by Anthraquinone and Methyl Substituted Anthraquinones , 2006 .