Reference number : GC-2017-Q3-00573, amendment number : , agreement type : G, recipient legal name : Peterson, Karl (University of Toronto), recipient country : CA, recipient province : nan, recipient city : Ontario, recipient postal code : nan, program name english : Engage Grants for universities, program name french : Subventions d'engagement partenarial pour les universités, program purpose english : Sulfuric acid produced during the metabolization of hydrogen sulfide gas, as well as acetic acid produced_x000D_
during the break down of long chain fatty acids, can result in aggressive acidic environments within sewer_x000D_
pipes, holding tanks, and oil/grease interceptors. Costly polymer based acid-resistant coatings are often_x000D_
employed to protect the infrastructure, sometimes in combination with anti-microbial additives. A new_x000D_
approach involves magnesium-based coatings that react with sulfuric acid, forming insoluble precipitates to_x000D_
create a protective impermeable barrier. However, the micro-structure of the precipitates, their adhesion to the_x000D_
substrate, as well as their abrasion resistance, are poorly understood. This project will address these issues_x000D_
through the micro characterization of the coating/substrate interface, as well as conducting pull-off adhesion_x000D_
and abrasion tests on coated samples after immersion in acid solutions at intervals of 30, 60, 90 and 120 days._x000D_
The compatibility of the new coating system with antimicrobial metals will also be assessed through_x000D_
inoculation experiments using a Thiobacillus species. Polished thin sections will be prepared in cross-section_x000D_
from the coating/subtrate interface to examine the microstructure using optical fluorescence and scanning_x000D_
electron microscopy, particularly with respect to porosity., program purpose french : Sulfuric acid produced during the metabolization of hydrogen sulfide gas, as well as acetic acid produced_x000D_
during the break down of long chain fatty acids, can result in aggressive acidic environments within sewer_x000D_
pipes, holding tanks, and oil/grease interceptors. Costly polymer based acid-resistant coatings are often_x000D_
employed to protect the infrastructure, sometimes in combination with anti-microbial additives. A new_x000D_
approach involves magnesium-based coatings that react with sulfuric acid, forming insoluble precipitates to_x000D_
create a protective impermeable barrier. However, the micro-structure of the precipitates, their adhesion to the_x000D_
substrate, as well as their abrasion resistance, are poorly understood. This project will address these issues_x000D_
through the micro characterization of the coating/substrate interface, as well as conducting pull-off adhesion_x000D_
and abrasion tests on coated samples after immersion in acid solutions at intervals of 30, 60, 90 and 120 days._x000D_
The compatibility of the new coating system with antimicrobial metals will also be assessed through_x000D_
inoculation experiments using a Thiobacillus species. Polished thin sections will be prepared in cross-section_x000D_
from the coating/subtrate interface to examine the microstructure using optical fluorescence and scanning_x000D_
electron microscopy, particularly with respect to porosity., agreement title english : Assessment of acid-resistant coating for cement-based pipes, holding tanks, and enclosures, agreement title french : Assessment of acid-resistant coating for cement-based pipes, holding tanks, and enclosures, agreement number : EGP, agreement value : 25000.0, agreement start date : 2017-11-08, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada