Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Pulp mills"”.
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What's that smell? Exploring the factors that influence environmental performance at Alberta's kraft pulp mills
Kraft Pulp mills are the most significant anthropogenic sources of total reduced sulphur (TRS) emissions in the world. My research had two objectives. First, to determine how the regulatory framework influences TRS emissions management at Alberta's Kraft Pulp mills. And second, to gain insights …
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Assessing the Cost and Operational Feasibility of "Green" Hardwood Winter Inventory for Southeastern Pulp Mills
Procuring hardwood pulpwood during the winter months for a pulp mill in the Southeast can be difficult. Saturated soils and low soil strength make logging difficult or impossible on many sites, forcing companies to store large volumes of hardwood pulpwood in woodyards for retrieval during wet …
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No to the pulp mills - no a las papeleras : institutional and cultural explanations for the Argentine National Government’s policy in the pulp Mill Dispute
Pro gradu -työni tutkii Uruguayn ja Argentiinan välisestä sellutehdaskiistaa (2005-). Tässä tutkimuksessa kiistaa on tarkasteltu maiden välisellä tasolla. Tarkoituksenani on ollut selvittää, mitkä kaikki tekijät vaikuttivat Argentiinan hallituksen jyrkkään kantaan koskien sellutehdashanketta …
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Development of a Mathematical Model for Monitoring Recovery Boiler Dissolving Tank Sounds
In the chemical recovery process of kraft pulp mills, molten smelt falls into the dissolving tank where it interacts violently with hot water. These smelt-water interactions allow for fast smelt dissolution, however too many violent interactions can also cause equipment damage. In severe cases, …
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State-of-the-art pollution control technology : global market pull or domestic regulatory push?
… of the decisions of New Zealand's two chemical pulp mills, Tasman and New Zealand Forest Products, to simultaneously replace heavily polluting chlorine bleaching with environmentally benign oxygen bleaching was used. Three hypotheses were proposed to explain this action: (i) oxygen bleaching was …
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Using TiO2 to Optimize the Photocatalytic Degradation of Kraft Black Liquor Using Response Surface Methodology
The Canadian pulp and paper industry has been concerned with reducing annual emissions of pollutants into water bodies, air and landfills. Black liquor is a major byproduct from pulp mills such as Kraft. Black liquor is utilized in boilers to produce steam and electricity. Black liquor is a …
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Color Removal From Pulp Mill Effluent Using Coal Ash Produced From Georgia Power Coal Combustion Plants
… coal power plants, and the effluent generated by pulp mills. Pulp mill effluent discolors surface waters into which it is discharged, and has been proven to negatively impact the dissolved oxygen and carbon necessary for aquatic life. The proposed solution is a cost-effective adsorption treatment …
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Analysis of shaker unit parameters to separate whole-tree wood chips
… of the increased use of lower grade wood über in pulp production. The need to up-grade the quality has resulted in the use of some form of screening system to separate acceptable wood chips from unwanted material at most pulp mills. In order to upgrade the chip quality, a study was conducted to …
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Multi-agent analysis of industrial networks : a South African bio-energy case study
… Africa. The network includes sugar and paper and pulp mills, the South African power utility and independent power producers. The decision-making criteria of the enterprises and the key performance indicators of the network were both measured by economic (cost and NPV respectively), environmental …
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The purification of semi-chemical pulping waste by aeration
… the most trouble is the waste discharge of pulp mills. The waste quite frequently pollutes streams, principally because it has a high oxygen demand. In satisfying this demand, the dissolved oxygen content of the stream may be lowered to such an extent that it will not support fish life or …
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The aerobic digestion of semi-chemical pulp mill wastes
Semi-chemical pulp mills discharge large quantities or waste materials into the streams of the nation. If the flow of the stream is such that the waste does not become sufficiently diluted, biological reactions occur which deplete the dissolved oxygen in the stream, sometimes to the point where it …
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Kraft lignin as a fuel for the rotary lime kiln
For many kraft pulp mills the chemical recovery boiler, in which concentrated black liquor is burned, represents the principal obstacle to increased production. However, studies have shown that the removal of even a small portion of the lignin from the black liquor would permit an incremental …
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Color-removal treatment of pulp-mill wastewater by lagooning
Electronic Thesis or Dissertation
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Promoting pulp and paper mill material circularity: functionalised organic-inorganic cellulosic mulch films
… harms the environment. Concurrently, paper and pulp mills (PPMs) generate substantial amounts of inorganic and organic wastes, such as cellulose fibres, lignosulfonate (LS), and titanium dioxide (TiO₂), which are useful components for making functional mulch films but are either landfilled or …
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Fate and effects of pulp mill effluent solids in the soil environment
The pulp and paper industry in New Zealand annually produces over one hundred thousand dry tonnes of solid waste due to the treatment of pulp and paper mill effluents, the majority of which is currently landfilled. The New Zealand Waste Management Strategy (2002) has set a target for the diversion …