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Magazine articles
Open Access
Corrosion studies of stainless steels in peroxide bleach media, TAPPI JOURNAL, December 1995, Vol. 78(12)

Corrosion studies of stainless steels in peroxide bleach media, TAPPI JOURNAL, December 1995, Vol. 78(12)

Magazine articles
Open Access
New strategies and alliances: key to global arena for the polymers, laminations and Coatings division, TAPPI JOURNAL, December 1995, Vol. 78(12)

New strategies and alliances: key to global arena for the polymers, laminations and Coatings division, TAPPI JOURNAL, December 1995, Vol. 78(12)

Magazine articles
Open Access
Drying: New lime mud dryer kiln helps James Riverâ??s Pennington, AL, mill meet environmental restrictions, December 1995 Tappi Journal [95Dec37.pdf]

New lime mud dryer kiln helps james river's pennington, al, mill meet environmental restrictions, TAPPI JOURNAL, December 1995, Vol. 78(12)

Magazine articles
Open Access
1995 looks good for corrugated and solid-fiber box production and folding paperboard boxes, TAPPI JOURNAL, April 1995, Vol. 78(4)

1995 looks good for corrugated and solid-fiber box production and folding paperboard boxes, TAPPI JOURNAL, April 1995, Vol. 78(4)

Magazine articles
Open Access
ECF results please gruvon mill, TAPPI JOURNAL, January 1995, Vol. 78(1)

ECF results please gruvon mill, TAPPI JOURNAL, January 1995, Vol. 78(1)

Magazine articles
Open Access
The corrosion behavior of titanium (grade 2) in alkaline peroxide bleach liquors, TAPPI JOURNAL, June 1995, Vol. 78(6)

The corrosion behavior of titanium (grade 2) in alkaline peroxide bleach liquors, TAPPI JOURNAL, June 1995, Vol. 78(6)

Magazine articles
Open Access
Process safety management and the pulp and paper industry, TAPPI JOURNAL, October 1995, Vol. 78(10)

Process safety management and the pulp and paper industry, TAPPI JOURNAL, October 1995, Vol. 78(10)

Magazine articles
Open Access
Factors affecting the fabrication of corrosion barriers for rp equipment in bleaching environments, TAPPI JOURNAL, September 1995, Vol. 78(9)

Factors affecting the fabrication of corrosion barriers for rp equipment in bleaching environments, TAPPI JOURNAL, September 1995, Vol. 78(9)

Journal articles
Magazine articles
Open Access
Formic acid pulping process of rice straw for manufacturing of cellulosic fibers with silica, TAPPI Journal August 2021

ABSTRACT: Emerging technology has the potential to develop entirely new approaches for producing cellulose fiber-based materials along with fuels and chemical raw materials like lignin and furfural. Rice straw is a rich source of cellulosic fibers and inorganic micronic-sized particles termed as ash. They can prove helpful in development of new or enhanced agricultural residue-based materials and products that offer cost effective substitutes for nonrenewable materials used in different domestic and industrial applications. Lignocellulose is an abundant material that is submicronic at the basic level. Rice straw is a fibrous lignocellulosic material obtained as agricultural residue, but it differs from most crop residues in its high content of silicon dioxide (SiO2). Ash content on a dry weight basis ranges from 13% to 20%, varying according to the state of conservation of the straw after harvest. The ash in rice straw has nearly 75% SiO2. The particle size analysis shows variation from a few microns to hundreds of microns for inorganic residues left after burning at high temperatures above 550°C. Proximate analysis of rice straw shows that it contains 54% to 56% holocellulose and 15% to 18% lignin, both of which are natural biopolymers. The compound analysis shows the different compounds present in rice straw ash.Rice straw is available in hundreds of million tons in India and other Asian countries, so suitable technologies are required to convert rice straw from a biomass waste to useful bioproducts like pulp, paper, and paperboard. This research paper is intended to obtain pulp with fibers having inherent silica present in it to give high opacity paper and better bonding between fibers.

Journal articles
Magazine articles
Open Access
Technological evaluation of Pinus maximinoi wood for industrial use in kraft pulp production, TAPPI Journal August 2021

ABSTRACT: This study characterized Pinus maximinoi wood and evaluated its performance for pulp production. Samples of Pinus taeda wood were used as reference material. For both species, wood chips from 14-year-old trees were used for the technological characterization, pulping, bleaching process analysis, and pulp properties. A modified kraft pulping process was carried out targeting kappa number 28±5% on brownstock pulp. The bleaching sequence was applied for bleached pulp with final brightness of 87±1 % ISO. Refinability and resistance properties were measured in the bleached pulps. Compared to P. taeda wood, P. maximinoi showed slightly higher basic density (0.399 g/cm³) and higher holocellulose (64.5%), lignin (31.1%), and extractives content (4.5%), along with lower ash content (0.16%). P. maximinoi tracheids showed greater wall thickness (6.4 µm) when compared to P. taeda tracheids. For the same kappa number, P. maximinoi and P. taeda resulted in similar screened yield, with an advantage observed for P. maximinoi, which resulted in lower specific wood consumption (5.281 m³/o.d. metric ton), and lower black liquor solids (1.613 metric tons/o.d. metric ton). After oxygen delignification, P. maximinoi pulp showed higher efficiency on kappa reduction (67.2%) and similar bleaching chemical demand as P. taeda pulp. Compared to P. taeda pulps, the refined P. maximinoi pulps had similar results and the bulk property was 10% higher. Results showed that P. maximinoi is an interesting alternative raw material for softwood pulp production in Brazil.

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