U of T Engineering PhD student is working to improve the sustainable treatment of Ontario's drinking water - U of T Engineering News - U of T Engineering News | Canada News Media
U of T Engineering PhD student is working to improve the sustainable treatment of Ontario's drinking water – U of T Engineering News – U of T Engineering News
Growing up in a small neighbourhood in Cameroon, Maeva Che (CivMin PhD student) was aware of challenges of accessing clean drinking water.
“Experiencing that exposure to water issues and challenges with sustainable access to safe drinking water ignited my interest in water treatment,” Che says.
Che’s drive to improve water quality around the globe brought her to the Drinking Water Research Group (DWRG) at University of Toronto’s Faculty of Applied Science & Engineering, where she is researching innovative solutions to address local water issues.
Che is working under the supervision of Professor Ron Hofmann (CivMin), who is a member of the DWRG. Her research focuses on removing unpleasant taste and odour compounds in Ontario’s drinking water by promoting the biodegradation of these compounds through granular activated carbon (GAC) filtration.
The project is supported by a five-year Natural Sciences and Engineering Research Council of Canada (NSERC) Alliance grant called Advanced and Emerging Issues in Drinking Water Treatment.
GAC filtration is a water treatment process that uses granular activated carbon, which is made from organic materials that are high in carbon, such as wood, coal or coconut shells. These materials are heated in the absence of oxygen through a process known as pyrolysis and prompted chemically or physically to produce the activated carbon. The activation enhances the material’s adsorption properties, making it productive to remove contaminants from water.
While GAC filtration is an effective treatment process, its adsorptive capacity is limited. The adsorptive capacity of GAC is expected to become exhausted after about three years in service and drinking water treatment utilities must replace the GAC. Aside from the inconvenience, replacing GAC is costly.
Che is working on alternative ways to remove contaminants using GAC filtration, specifically through biodegradation. When the filtration has been in service for a while, there is the growth of micro-organisms on the GAC, which can be useful for removing contaminants.
PhD student Maeva Che works with filtration systems research at the Drinking Water Lab in the Department of Civil & Mineral Engineering. (photo by Galina Nikitina)
“Think of biodegradation as the useful bacteria on the GAC feeding on the contaminants in the water, thereby removing them,” says Che.
“If the GAC has enough good bacteria that is biodegrading the compounds, the GAC may not need to be replaced when its adsorptive capacity becomes exhausted. This can extend the filter’s lifetime, resulting in cost benefits for treatment utilities.”
In other words, biodegradation can potentially enhance the performance of GAC filters.
Che and the DWRG will collaborate with water treatment plants to determine methods that can enhance the biodegradation of taste and odour compounds within their GAC filters.
Currently in its initial phase, the project is taking place alongside the Peterborough Utilities Group’s drinking water treatment plant, where Che is conducting pilot-scale filtration studies with support from the Peterborough Utilities Commission. They plan to extend this research to other partner treatment plants in the future.
Working with various water treatment plants across Ontario, Che will also assess the effectiveness of GAC filters in removing non-traditional taste and odour compounds, which are not commonly monitored.
To achieve this, she’ll evaluate filter performance for two common taste and odour compounds — 2-methylisoborneal and geosmin — and eight additional non-traditional compounds that can cause taste and odour events. This involves collecting GAC and water samples from the plants and conducting lab-scale filtration tests, called minicolumn tests. This test, developed by the DWRG, allows to differentiate between adsorption and biodegradation in GAC filters.
Minicolumn tests provide crucial insights into the performance of the GAC filters in terms of the adsorption and biodegradation of contaminants. To distinguish between these mechanisms, researchers use parallel minicolumns. One minicolumn operates under conditions where the biological activity of micro-organisms is suppressed, which isolates the adsorption process. The second minicolumn operates without biological suppression, allowing both adsorption and biodegradation to occur.
“Many plants are unaware of their filters’ performance for other compounds, aside from the two common ones, that also contribute to taste and odour events in water. Our project, therefore, plays a crucial role in expanding the understanding of this,” Che says.
Project partners include the Ajax Water Supply Plant and the Barrie Surface Water Treatment Plant.
The DWRG is made of approximately 30 graduate students, post-doctoral fellows, research managers and associates who collaborate with local, national and international industry and government organizations to address a wide range of projects related to municipal drinking water.
Che credits her experience as a master’s student with the research group as a major factor in her decision to pursue a PhD at the University of Toronto.
“During my master’s degree with the DWRG, I worked on projects that improved drinking water quality, gaining hands-on experience at treatment plants. Seeing the results of my research reinforced my decision to pursue my PhD here,” Che says.
Ultimately, Che hopes to make a significant impact in the field — and the DWRG provides opportunities to achieve this, with a supportive community of researchers and supervisors.
“My goal is to continue researching and developing sustainable solutions for drinking water treatment that benefit communities in need,” she says.
CHICAGO (AP) — United Airlines has struck a deal with Elon Musk’s SpaceX to offer satellite-based Starlink WiFi service on flights within the next several years.
The airline said Friday the service will be free to passengers.
United said it will begin testing the service early next year and begin offering it on some flights by later in 2025.
Financial details of the deal were not disclosed.
The announcement comes as airlines rush to offer more amenities as a way to stand out when passengers pick a carrier for a trip. United’s goal is to make sitting on a plane pretty much like being on the ground when it comes to browsing the internet, streaming entertainment and playing games.
“Everything you can do on the ground, you’ll soon be able to do on board a United plane at 35,000 feet, just about anywhere in the world,” CEO Scott Kirby said in announcing the deal.
The airline says Starlink will allow passengers to get internet access even over oceans and polar regions where traditional cell or Wi-Fi signals may be weak or missing.
Sony has made it easy for Canadian consumers to preorder the PlayStation 5 Pro in Canada directly from PlayStation’s official website. Here’s how:
Visit the Official Website: Go to direct.playstation.com and navigate to the PS5 Pro section once preorders go live on September 26, 2024.
Create or Log in to Your PlayStation Account: If you don’t have a PlayStation account, you will need to create one. Existing users can simply log in to proceed.
Place Your Preorder: Once logged in, follow the instructions to preorder your PS5 Pro. Ensure you have a valid payment method ready and double-check your shipping information for accuracy.
Preorder Through Major Canadian Retailers
While preordering directly from PlayStation is a popular option, you can also secure your PS5 Pro through trusted Canadian retailers. These retailers are expected to offer preorders on or after September 26:
Best Buy Canada
Walmart Canada
EB Games (GameStop)
Amazon Canada
The Source
Steps to Preorder via Canadian Retailers:
Visit Retailer Websites: Search for “PlayStation 5 Pro” on the website of your preferred retailer starting on September 26.
Create or Log in to Your Account: If you’re shopping online, having an account with the retailer can speed up the preorder process.
Preorder in Store: For those who prefer in-person shopping, check with local stores regarding availability and preorder policies.
3. Sign Up for Notifications
Many retailers and websites offer the option to sign up for notifications when the preorder goes live. If you’re worried about missing out due to high demand, this can be a useful option.
Visit Retailer Sites: Look for a “Notify Me” or “Email Alerts” option and enter your email to stay informed.
Use PlayStation Alerts: Sign up for notifications directly through Sony to be one of the first to know when preorders are available.
4. Prepare for High Demand
Preordering the PS5 Pro is expected to be competitive, with high demand likely to result in quick sellouts, just as with the initial release of the original PS5. To maximize your chances of securing a preorder:
Act Quickly: Be prepared to place your order as soon as preorders open. Timing is key, as stock can run out within minutes.
Double-Check Payment Information: Ensure your credit card or payment method is ready to go. Any delays during the checkout process could result in losing your spot.
Stay Informed: Monitor PlayStation and retailer websites for updates on restocks or additional preorder windows.
Final Thoughts
The PlayStation 5 Pro is set to take gaming to the next level with its enhanced performance, graphics, and new features. Canadian gamers should be ready to act fast when preorders open on September 26, 2024, to secure their console ahead of the holiday season. Whether you choose to preorder through PlayStation’s official website or your preferred retailer, following the steps outlined above will help ensure a smooth and successful preorder experience.
For more details on the PS5 Pro and to preorder, visit direct.playstation.com or stay tuned to updates from major Canadian retailers.
Since the PlayStation 5 (PS5) launched four years ago, PlayStation has continuously evolved to meet the demands of its players. Today, we are excited to announce the next step in this journey: the PlayStation 5 Pro. Designed for the most dedicated players and game creators, the PS5 Pro brings groundbreaking advancements in gaming hardware, raising the bar for what’s possible.
Key Features of the PS5 Pro
The PS5 Pro comes equipped with several key performance enhancements, addressing the requests of gamers for smoother, higher-quality graphics at a consistent 60 frames per second (FPS). The console’s standout features include:
Upgraded GPU: The PS5 Pro’s GPU boasts 67% more Compute Units than the current PS5, combined with 28% faster memory. This allows for up to 45% faster rendering speeds, ensuring a smoother gaming experience.
Advanced Ray Tracing: Ray tracing capabilities have been significantly enhanced, with reflections and refractions of light being processed at double or triple the speed of the current PS5, creating more dynamic visuals.
AI-Driven Upscaling: Introducing PlayStation Spectral Super Resolution, an AI-based upscaling technology that adds extraordinary detail to images, resulting in sharper image clarity.
Backward Compatibility & Game Boost: More than 8,500 PS4 games playable on PS5 Pro will benefit from PS5 Pro Game Boost, stabilizing or enhancing performance. PS4 games will also see improved resolution on select titles.
VRR & 8K Support: The PS5 Pro supports Variable Refresh Rate (VRR) and 8K gaming for the ultimate visual experience, while also launching with the latest wireless technology, Wi-Fi 7, in supported regions.
Optimized Games & Patches
Game creators have quickly embraced the new technology that comes with the PS5 Pro. Many games will receive free updates to take full advantage of the console’s new features, labeled as PS5 Pro Enhanced. Some of the highly anticipated titles include:
Alan Wake 2
Assassin’s Creed: Shadows
Demon’s Souls
Dragon’s Dogma 2
Final Fantasy 7 Rebirth
Gran Turismo 7
Marvel’s Spider-Man 2
Ratchet & Clank: Rift Apart
Horizon Forbidden West
These updates will allow players to experience their favorite games at a higher fidelity, taking full advantage of the console’s improved graphics and performance.
Design & Compatibility
Maintaining consistency within the PS5 family, the PS5 Pro retains the same height and width as the original PS5 model. Players will also have the option to add an Ultra HD Blu-ray Disc Drive or swap console covers when available.
Additionally, the PS5 Pro is fully compatible with all existing PS5 accessories, including the PlayStation VR2, DualSense Edge, Pulse Elite, and Access controller. This ensures seamless integration into your current gaming setup.
Pricing & Availability
The PS5 Pro will be available starting November 7, 2024, at a manufacturer’s suggested retail price (MSRP) of:
$699.99 USD
$949.99 CAD
£699.99 GBP
€799.99 EUR
¥119,980 JPY
Each PS5 Pro comes with a 2TB SSD, a DualSense wireless controller, and a copy of Astro’s Playroom pre-installed. Pre-orders begin on September 26, 2024, and the console will be available at participating retailers and directly from PlayStation via direct.playstation.com.
The launch of the PS5 Pro marks a new chapter in PlayStation’s commitment to delivering cutting-edge gaming experiences. Whether players choose the standard PS5 or the PS5 Pro, PlayStation aims to provide the best possible gaming experience for everyone.
Preorder your PS5 Pro and step into the next generation of gaming this holiday season.
