Year: 2024, 2024
Member of: Trent University Graduate Thesis Collection
Abstract: <p>A key knowledge gap in aeolian transport research concerns the adjustment of saltation processes to the extreme conditions found within high-latitude regions. A series of wind tunnel experiments were carried out under full climate control and over a wide range in humidity. Particle entrainment and transport within shearing flows of varied wind speed were monitored over beds of varied… more Year: 2023, 2023
Member of: Trent University Graduate Thesis Collection
Abstract: <p>This study reports on as series of laboratory wind tunnel experiments aimed at furtheringour understanding of aggregate breakdown and dust release during aeolian transport, and
thereby, has implications for air quality and the management of dust emission through water
application. Particles aggregates 500 um in diameter were formed and isolated by the
wetting, drying, and screening of… more Year: 2020, 2020
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Mafic and ultramafic mine wastes have the potential to sequester atmospheric carbon dioxide (CO2) through enhanced weathering and CO2 mineralization. In this study, kimberlite residues from South African diamond mines were investigated to understand how weathering of these wastes leads to the formation of secondary carbonate minerals, a stable sink for CO2. Residues from Venetia Diamond… more Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Aeolian transport of sand particles is an important geomorphic process that occurs over a significant portion of the earth's land surface. Wind tunnel simulations have been used for more than 75 years to advance the understanding of this process; however, there are still several principles that lack validation from direct sampling of the sand particles in flight. Neither the three-… more Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Preston, Colette Alexia, Thesis advisor (ths): McKenna Neuman, Cheryl, Degree committee member (dgc): Boulton, Wayne, Degree committee member (dgc): Buttle, James, Degree committee member (dgc): Eimers, Catherine, Degree granting institution (dgg): Trent University Abstract: <p>A series of experiments was designed to assess the relative efficacy of various dust suppressants to suppress PM10 emissions from nepheline syenite tailings. The experiments were conducted in the Trent University Environmental Wind Tunnel, Peterborough, Ontario, and on the tailings ponds at the Unimin Ltd Nephton mine near Havelock, Ontario. Treated surfaces were subjected to particle-… more Year: 2017, 2017
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Ogungbemide, Damilare Immanuel, Thesis advisor (ths): McKenna Neuman, Cheryl, Degree committee member (dgc): Lafleur, Peter, Degree committee member (dgc): Buttle, Jim, Degree committee member (dgc): Hill, Stephen, Degree granting institution (dgg): Trent University Abstract: <p>A set of experiments was designed to investigate the factors—atmospheric and surficial—controlling fugitive dust emissions from the tailings ponds of UNIMIN Canada, a mining company that extracts and produces nepheline syenite (feldspar) at two adjacent sites (Nephton and Blue Mountain) located north of Havelock, Ontario. Using wind tunnel measurements, the combined influence of relative… more
