{"id":{"repo_id":"uwo","oai_identifier":"oai:uwo.scholaris.ca:20.500.14721/18384"},"canonical_url":"https://search.dev.ndltd.org/etd/uwo/oai:uwo.scholaris.ca:20.500.14721/18384","repository":{"repo_id":"uwo","name":"Western University","base_url":"https://uwo.scholaris.ca/server/oai/request"},"display":{"title":"Impact of Porous Media Grain Size on the Transport of Multiwalled Carbon Nanotubes","abstract":"Nanomaterials possess unique physical, electrical and chemical properties which make them attractive for use in a wide range of applications. Through their use and eventual disposal, nanomaterials may ultimately be released into the subsurface environment and previous studies show that nanomaterials may pose a hazard to health. This study investigates the mobility of one important nanomaterial (multi-walled carbon nanotubes or MWNTs) through porous media. Particular focus is placed on the impact of varying mean collector grain size on MWNT retention. Results from one dimensional column experiments conducted under various physical and chemical conditions coupled with results of numerical modeling assess the suitability of traditional transport models to predict MWNT mobility. MWNTs were found to be mobile though porous media ranging from fine sand to silt. Findings suggest that a dual deposition model coupled with site blocking greatly improves model fits compared to traditional colloid filtration theory.","abstract_html":"Nanomaterials possess unique physical, electrical and chemical properties which make them attractive for use in a wide range of applications. Through their use and eventual disposal, nanomaterials may ultimately be released into the subsurface environment and previous studies show that nanomaterials may pose a hazard to health. This study investigates the mobility of one important nanomaterial (multi-walled carbon nanotubes or MWNTs) through porous media. Particular focus is placed on the impact of varying mean collector grain size on MWNT retention. Results from one dimensional column experiments conducted under various physical and chemical conditions coupled with results of numerical modeling assess the suitability of traditional transport models to predict MWNT mobility. MWNTs were found to be mobile though porous media ranging from fine sand to silt. Findings suggest that a dual deposition model coupled with site blocking greatly improves model fits compared to traditional colloid filtration theory.","abstract_has_math":false,"creators":["Mattison, Nikolai Troy"],"institution":null,"degree_name":"MES","degree_level":null,"degree_discipline":"Civil and Environmental Engineering","degree_department":null,"school":null,"contributors":[],"advisors":["O’Carroll, Denis"],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-01-01","date_published":"2011-01-01","updated_at":"2026-07-27T21:56:18Z","subjects":["multi-walled carbon nanotubes","MWNT","site blocking","grain size","dual deposition","mobility","subsurface","nanomaterial"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/20.500.14721/18384","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["O’Carroll, Denis"]},{"key":"dc:creator","label":"Author","values":["Mattison, Nikolai Troy"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2025-06-25T18:49:49Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2025-06-25T18:49:49Z"]},{"key":"dc:date.issued","label":"Date","values":["2011-01-01"]},{"key":"dc:type","label":"Dc Type","values":["thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Civil and Environmental Engineering"]},{"key":"thesis:degree_name","label":"Degree Name","values":["MES"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["multi-walled carbon nanotubes","MWNT","site blocking","grain size","dual deposition","mobility","subsurface","nanomaterial"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/20.500.14721/18384"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Nanomaterials possess unique physical, electrical and chemical properties which make them attractive for use in a wide range of applications. Through their use and eventual disposal, nanomaterials may ultimately be released into the subsurface environment and previous studies show that nanomaterials may pose a hazard to health. This study investigates the mobility of one important nanomaterial (multi-walled carbon nanotubes or MWNTs) through porous media. Particular focus is placed on the impact of varying mean collector grain size on MWNT retention. Results from one dimensional column experiments conducted under various physical and chemical conditions coupled with results of numerical modeling assess the suitability of traditional transport models to predict MWNT mobility. MWNTs were found to be mobile though porous media ranging from fine sand to silt. Findings suggest that a dual deposition model coupled with site blocking greatly improves model fits compared to traditional colloid filtration theory."]},{"key":"dc:title","label":"Title","values":["Impact of Porous Media Grain Size on the Transport of Multiwalled Carbon Nanotubes"]}]}],"canonical_facts":{"dc:contributor.advisor":["O’Carroll, Denis"],"dc:creator":["Mattison, Nikolai Troy"],"dc:date.accessioned":["2025-06-25T18:49:49Z"],"dc:date.available":["2025-06-25T18:49:49Z"],"dc:date.issued":["2011-01-01"],"dc:description.abstract":["Nanomaterials possess unique physical, electrical and chemical properties which make them attractive for use in a wide range of applications. Through their use and eventual disposal, nanomaterials may ultimately be released into the subsurface environment and previous studies show that nanomaterials may pose a hazard to health. This study investigates the mobility of one important nanomaterial (multi-walled carbon nanotubes or MWNTs) through porous media. Particular focus is placed on the impact of varying mean collector grain size on MWNT retention. Results from one dimensional column experiments conducted under various physical and chemical conditions coupled with results of numerical modeling assess the suitability of traditional transport models to predict MWNT mobility. MWNTs were found to be mobile though porous media ranging from fine sand to silt. Findings suggest that a dual deposition model coupled with site blocking greatly improves model fits compared to traditional colloid filtration theory."],"dc:identifier.uri":["https://hdl.handle.net/20.500.14721/18384"],"dc:subject":["multi-walled carbon nanotubes","MWNT","site blocking","grain size","dual deposition","mobility","subsurface","nanomaterial"],"dc:title":["Impact of Porous Media Grain Size on the Transport of Multiwalled Carbon Nanotubes"],"dc:type":["thesis"],"thesis:degree_discipline":["Civil and Environmental Engineering"],"thesis:degree_name":["MES"]},"updated_at":"2026-07-27T21:56:18Z"}