White pitch deposits originated from the wood
extractives, synthetic polymers, and additives used in the
papermaking process, etc. may cause numerous problems to the
papermaking process and also degrade the product quality.
The timely analysis and characterization of white pitch
deposit is important for tracing the origin of the deposits....
Black liquor gasification is one of the promising alternatives to
eliminate the drawbacks of the conventional recovery unit of the
kraft process. A numerical model has been developed to simulate an
industrial pilot scale entrained-flow gasifier currently operating at
Tampere, Finland. The objective of the model is to investigate the...
Household recycling is an important means by which social costs of solid waste
disposal may be reduced. These costs include energy and resource costs of collection
and disposal as well as environmental costs from emissions from landfills, incinerators,
and collection vehicles. In this thesis, a household production model is used...
Physical and chemical properties of wood (W) fiber (F)
pellets (P) and wood (W) shavings(S) were determined in the
laboratory prior to their use.
Laboratory results showed that WS were superior to WFP
except for moisture holding capacity on volume basis which is
one of the most essential properties of...
Large quantities of unused heavy oil and residual waste products from the petroleum refining industry were deposited in on-site landfills, pits, and lagoons, prior to the promulgation of regulations governing their disposal and technology development that would further utilize and/or recycle these materials.
Contacting petroleum products with sulfuric acid for...
The change in the oscillation frequency in the current of
an atmospheric helium glow discharge is a sensitive detector
for gas chromatography. The response of the detector is in
the femtomole and picomole range for nonane and decane. The
effluent of a capillary column is directed into a glow
discharge...
A novel technology for processing pulp slurries with high inorganic filler content and at high consistencies (solids content) is extrusion. The paper industry waste comprises of fibers mixed with inorganic filler content. Using extruders similar to food extruders and consistencies ranging from 30-45%, profiles can be extruded from this waste...
The purpose of this study was to examine Oregon State University students' self-reported knowledge, attitudes, and behavior about recycling. Students living in on-campus and off-campus organized living groups were mailed a four-page survey with questions about their recycling activities, their attitudes about recycling, their opinions of the effectiveness of the...
The coagulation of effluent from the kraft pulping and
papermaking process was investigated. The amount of material
coagulated from saline mixtures of the effluent is determined
as a function of time, salinity, kraft effluent
concentration, and mixture pH. Individual sources of salinity
include sea water and several different solutions of...