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Category: sustainability – Page 247

As the world builds out ever larger installations of wind and solar power systems, the need is growing fast for economical, large-scale backup systems to provide power when the sun is down and the air is calm. Today’s lithium-ion batteries are still too expensive for most such applications, and other options such as pumped hydro require specific topography that’s not always available.

Now, researchers at MIT and elsewhere have developed a new kind of battery, made entirely from abundant and inexpensive materials, that could help to fill that gap.

The new battery architecture, which uses aluminum and sulfur as its two electrode materials, with a molten salt electrolyte in between, is described today in the journal Nature, in a paper by MIT Professor Donald Sadoway, along with 15 others at MIT and in China, Canada, Kentucky, and Tennessee.

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Engineers at RMIT University have developed a method to use disposable personal protective equipment (PPE) to make concrete stronger, providing an innovative way to significantly reduce pandemic-generated waste.

The RMIT team is the first to investigate the feasibility of recycling three key types of PPE—isolation gowns, face masks and rubber gloves—into concrete.

Published in the journals Case Studies in Construction Materials, Science of the Total Environment and Journal of Cleaner Production, the studies by RMIT School of Engineering researchers demonstrate the potential for PPE to be used as reinforcement materials in structural concrete.

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A radical new idea for offshore wind turbines would replace tall unwieldy towers that had blades on top with lightweight, towerless machines whose blades resemble the loops of a whisk. Now new software can help optimize these unusual designs to help make them a reality, researchers say.

This new work comes as the U.S. government plans to boost offshore wind energy. In March, the White House announced a national goal to deploy 30 gigawatts of new offshore wind power by 2030. The federal government suggested this initiative could help power more than 10 million homes, support roughly 77,000 jobs, cut 78 million tonnes in carbon emissions, and spur US $12 billion in private investment per year. As part of this new plan, in June, the White House and eleven governors from along the East Coast launched a Federal-State Offshore Wind Implementation Partnership to further develop the offshore wind supply chain, including manufacturing facilities and port capabilities.

One reason offshore wind is attractive is the high demand for electricity on the coasts. People often live far away from where onshore wind is the strongest, and there is not enough space in cities for enough solar panels to power them, says Ryan Coe, a mechanical engineer in Sandia National Laboratories’ water-power group in Albuquerque.

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New technology could divert problem plastics from landfills and convert them into fuel sources.

A plastics recycling innovation that does more with less simultaneously increases conversion to useful products while using less of the precious metal ruthenium. It will be presented today (August 22, 2022) at the American Chemical Society fall meeting in Chicago.

“The key discovery we report is the very low metal load,” said Pacific Northwest National Laboratory (PNNL) chemist Janos Szanyi, who led the research team. “This makes the catalyst much cheaper.”

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The fastest way to track a fish is to use the cloud, figuratively speaking. A new acoustic receiver, developed by researchers at Pacific Northwest National Laboratory (PNNL) and published in the IEEE Internet of Things Journal, sends near-real-time fish tracking data to the digital cloud, providing timely information to dam operators and decision-makers about when, where, and how many fish are expected to pass through dams. Instead of relying on seasonal estimates of fish migration from previous years, these data from tagged fish support more informed decisions about dam operations that affect fish passage.

“This receiver provides up-to-the-hour data to dam operators to assist in making informed day-to-day decisions in support of passage, like adjusting water flow when it’s clear that a large group of juvenile fish are approaching the dam,” said Jayson Martinez, a PNNL mechanical engineer who co-developed the receiver.

Hydropower dams are an important source of dependable renewable energy, generating about six percent of total electricity in the United States. Helping fish navigate them safely is a key part of reducing dams’ environmental impact. The new receiver is a critical piece of the puzzle in the ongoing endeavor to improve fish passage.

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Were you unable to attend Transform 2022? Check out all of the summit sessions in our on-demand library now! Watch here.

Digital twins enable enterprises to model and simulate buildings, products, manufacturing lines, facilities and processes. This can improve performance, quickly flag quality errors and support better decision-making. Today, most digital twin projects are one-off efforts. A team may create one digital twin for a new gearbox and start all over when modeling a wind turbine that includes this part or the business process that repairs this part.

Ideally, engineers would like to quickly assemble more complex digital twins to represent turbines, wind farms, power grids and energy businesses. This is complicated by the different components that go into digital twins beyond the physical models, such as data management, semantic labels, security and the user interface (UI). New approaches for composing digital elements into larger assemblies and models could help simplify this process.

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It was designed to reduce carbon dioxide emissions by over 6.5 million tons each year.

The Dubai Electricity and Water Authority (DEWA) is aiming for 5 GW by 2030 in the Mohammed bin Rashid Al Maktoum Solar Park — the largest single-site solar park in the world.

Mohammed Bin Rashid Al Maktoum Solar Park project constitutes one of the key pillars of the Dubai Clean Energy Strategy 2050 and the Dubai Net Zero Carbon Emissions Strategy to provide 100 percent of Dubai’s total power capacity from clean energy sources by 2050.

The Dubai Electricity and Water Authority (DEWA) has issued an update indicating that the Mohammed bin Rashid Al Maktoum Solar Park is still targeting 5 GW of generation capacity within this decade.

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An art collective is trying to get an AI-supported candidate into Danish Parliament in 2023. Could we have a fully virtual candidate one day?

With all the political rancor that has become a part of our everyday reality, maybe it’s time to admit that humans may not be the best at forging agreements. Our egos are always in play, and emotions often rule our political choices more than reason. Maybe artificial intelligence (AI) could do a better job, or at least that’s what the creators of The Synthetic Party, the world’s first AI-based political party, think. The party hopes to run an AI candidate in Denmark’s general election in 2023.

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Imaginima/iStock.

The party would also like to see the UN adding an 18th sustainable development goal which would let humans coexist directly with algorithms.

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It’s been over a month since we last updated our blog about our winter warrior, currently around 96 million miles away. At present the team is preparing for Ingenuity’s next flight, which could take place as early as this weekend. This 30th sortie will be a short hop – which will check out our system’s health after surviving 101 sols of winter, collect landing delivery data in support of NASA’s Mars Sample Return Campaign, and potentially clear off dust that has settled on our solar panel since Flight 29.

What’s Happened Lately

It’s still winter at Jezero Crater, which means overnight temperatures are as low as -124 degrees Fahrenheit (−86 Celsius). Winter at Mars also means the amount of solar energy hitting our solar panel remains below what is needed to maintain charge in our batteries both day and night. However, during the day the panel continues to create enough charge to make shorter hops possible. That’s what we did on Flight 29 and is our plan for Flight 30.

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And their method is faster, cheaper, and more sustainable.

Recently, many projects have been carried out using recyclable materials for sustainability. One of these projects was implemented by the Los Angeles-based architectural startup Azure.

Azure is using recycled plastic to 3D print prefab homes. The startup is now selling many house models ranging from a backyard studio to a two-bedroom ADU.

Azure is reshaping the way we build Homes, ADUs and Backyard Studios and Sheds by bringing 3D printing technology and recycled materials together to create truly sustainable living in a modern and beautiful design.

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