Oregon's forest product industry continues to be the nation's number one
producer of wood products. The forest products industry contributes significantly
to Oregon's economy. Changes in timber supply, land use policy, technology,
and product demand create significant impacts on the region. The activities of
the wood products industry translate into...
Two-stage sulfite pulping conditions were determined which
produced a high-yield high-hemicellulose pulp from red alder (Alnus
rubra Bong.). Those cooks with a bisulfite first-stage and an alkaline
second-stage produced pulps with the highest hemicellulose
content and the highest strength properties.
The major hemicellulose in red alder is 0-acetyl-(4-0-
methylglucurono)xylan. Removal...
This report summarizes a study which sought to provide toxicity data for pulp mills near Coos Bay through a series of toxicity bioassays. The study also surveyed benthic and beach fauna to identify macro-organisms so individual assessments of water quality requirements could be made.
Bigleaf maple chips were pulped by the kraft, Magnetite, neutral sulfite semichemical, and refiner groundwood processes. Pulp from each process was refined in a Valley Beater and the handsheet properties of the refined pulp were compared to similar pulps made from other wood species. For the kraft process a different...
The development of a market for currently non-merchantable forest material, such as harvest residues of tops and limbs of trees or small diameter trees, has been suggested as a possible win-win solution that could: (i) provide a financial incentive to help motivate treatments to reduce wildfire risk or restore forest...
The degradation of kraft pulping wastes in estuarine waters
was measured in terms of the following parameters: five-day 20°C
B.O.D., the Pearl-Benson Index, and toxicity to the bay mussel
(Mytilus edulis L.). The waste tested was the total effluent from a
combined pulp and paper mill producing 430 tons of...
"This progress report describes research conducted on pulp mill waste degradation in marine waters ... Engineering investigations ... have centered upon (a) treatment of mill wastes by dilution; (b) foam separation of strong wastes and (c) treatment of evaporator condensates by carbon adsorption. Biological studies have been concerned with development...
"The wastes investigated were obtained from the main sewer of a modern Kraft paper mill, pulping only Douglas fir. . . Even though the waste reaching the main sewer has been treated so that the content of inorganic sulfide, mercaptan, soap and black liquor is greatly reduced, it is still...
This project explored the feasibility of using fungi in a constructed wetland
for the treatment of pulp mill effluent. The effluent is high in dissolved
lignins (some of which are chlorinated), which have proven very difficult to
degrade biologically. Mindful of work done with the (terrestrial) white rot
fungi, especially...
Published September 1995. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Combustion properties of kraft black liquor solids were studied using a laminar entrained flow reactor. The tendency of black liquors to release fume (compounds containing Na⁺, K⁺, Cl⁻, SO₄²⁻, SO₃²⁻, S₂0₃²⁻ and C0₃²⁻) during combustion were observed at 1000°C. Black liquor solids with a size fraction of 63 to 100...
Hardwoods, including aspen, comprised 22 percent of the pulpwood. received in the New York and New England States pulp mills in 1944 when war-time conditions favored the use of all available wood. The denser hardwoods alone, however, amounted to only 9 percent of all the pulpwood, and this value is...
Because of the organic nature and the natural foaming characteristics
of kraft mill effluents, it was decided to investigate the
feasibility of using foam separation as a method of treatment. The
treatment efficiency was evaluated by BOD and COD reductions as
well as the decrease in toxicity to marine life....
This paper presents detailed information of value in experimental work in the laboratory and in promoting the effeciency of commercial paper-making plants employing the soda process.
Synthetic adhesives like phenol formaldehyde (PF) and isocyanates dominate the
wood based structural panel market. The raw materials that makeup these adhesives
are based on petroleum and natural gas. The sustainability and the continued success
of the wood based structural panel industry will benefit from the development of
alternative adhesives...
Six filtrate samples (liquid state) were obtained from selected stages in a totally-chlorine- free (TCF) bleach pulp mill. The solids were recovered by evaporation on rotary evaporators and by lyophilization with a freeze drier. Chemical contents (inorganic and organic chemicals) of the six filtrates were analyzed quantitatively according to TAPPI...
The wood-based building products industry has experienced significant turbulence over the past several decades as a function of multiple forces including among others globalization, product and process innovation, and shifting customer and consumer interest and demands. Collectively, these changes have challenged the historical tenets which have defined industry strategy and...
"The purpose of this report is to evaluate alternate engineering plans for the disposal of wastes from a kraft process pulp and paper mill located at Toledo, Oregon. These alternatives have been evaluated from the standpoint of estimated annual cost and estimated resulting pollution of Yaquina Estuary in order to...
Aerial photography taken of waste plumes from Kraft pulp mill ocean outfalls was shown to be an effective tool in the study of waste disposal sites. This technique is not limited by sea conditions and permits monitoring and evaluation of outfall sites throughout the year. Photography taken at one instant...