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New carbon capture method uses water and pressure to remove CO₂ from emissions at half current costs

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New carbon capture method uses water and pressure to remove CO₂ from emissions at half current costs


Credit: Unsplash/CC0 Public Domain

A new, low-cost method for capturing carbon dioxide emissions from power plants and industrial facilities relies on a simple physical phenomenon—the same one that causes bubbles to fizz when popping a bottle of Champagne or cracking open a bottle of seltzer.

The process, called pressure-induced (PICC), uses water and pressure to pull carbon dioxide out of before it reaches the atmosphere, offering a cleaner and far less expensive alternative to traditional chemical methods.

Co-inventors Dr. Mark Holtzapple, professor of chemical engineering at Texas A&M University, and Jonathan Feinstein of ExcelThermic Enterprises have filed patents for licensing the technology to , hydrogen facilities, cement kilns, steel blast furnaces and other industrial emitters worldwide. Holtzapple said PICC is a practical solution to an urgent problem because fossil fuel combustion—which releases into the atmosphere—remains an important component of the global energy mix.

“Our invention is a cost-effective way to address one of the greatest challenges facing humanity,” Holtzapple said. “We can capture carbon dioxide from flue gas using only water and pressure, which makes the process simple, clean and less expensive than competing technologies.”

Traditional carbon capture systems rely on strong chemicals called amines that bind with carbon dioxide to remove it from exhaust gases. Amines struggle to pull more than 90% of the carbon dioxide out of the flue gas, Holtzapple said. Also, the amines are expensive and degrade when exposed to flue gases. Furthermore, permitting 10% of the carbon dioxide to escape into the environment is no longer tenable, he said.

In contrast, PICC uses physical absorption. Because PICC uses no chemical bonds, carbon dioxide pops back out of the water at reduced pressures just as easily as it dissolves in water at high pressure.

“Everybody knows that high-pressure carbon dioxide dissolves in water, and that when you open a bottle of Coca-Cola or beer you see that carbon dioxide bubble back out,” Holtzapple said. Once released, the carbon dioxide can be safely stored or utilized.

How the system works

In operation, from combusting coal, or biomass—like forest waste, crop residues or municipal solid waste—is first cooled and compressed. The gas is then piped into an absorption column, where flows downward while the gas moves upward through a structured packing that maximizes contact between the two streams. As the nearly clean gas reaches the top of the column, it contacts entering at the top. There, the last traces of carbon dioxide dissolve into the water, with clean gas releasing into the environment.

The water exiting the bottom of the column contains dissolved carbon dioxide and is transferred to a series of vessels, each operating at lower and lower pressures, where the carbon dioxide progressively bubbles out. Holtzapple said the released carbon dioxide is then ready for compression and injection into underground geological formations, such as saline aquifers, where it is permanently stored.

A lower cost path to near-total capture

Economic analyses show that PICC can capture and compress 99% of for $26 per metric ton. Other current technologies capture about 90% and cost $50 to $100 per metric ton, Holtzapple said.

Additionally, by adding a small amount of lime—an alkali—to the water, PICC captures 100% of carbon dioxide for an average cost less than $28 per metric ton. At that level of capture, even the carbon dioxide from the combustion air is removed, Holtzapple said.

“Without adding carbon dioxide to the atmosphere, PICC allows us to use abundant fossil fuels on which our civilization is built. Furthermore, by coupling PICC to biomass combustion, we can remove carbon dioxide from the atmosphere cost effectively,” he said.

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New carbon capture method uses water and pressure to remove CO₂ from emissions at half current costs (2025, November 15)
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Artemis II: Everything We Know as Its Crew Approaches the Far Side of the Moon

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Artemis II: Everything We Know as Its Crew Approaches the Far Side of the Moon


On day six of its mission, Artemis II is closing in on the far side of the moon. Meanwhile, the historic journey has not been without fascinating and curious stories, from the images and videos that its four crew members have shared with the world to the inevitable unforeseen events—including a tricky toilet situation.

A few hours before the crew begins its lunar flyby, here’s how things are going on Artemis II.

When Will They Reach the Far Side of the Moon?

While Artemis II won’t actually land on the moon (that won’t happen until Artemis IV), that does not make this mission any less compelling. Once the Artemis II astronauts finish flying over the dark side of the moon, they will have the historic distinction of being the humans who have traveled the farthest from Earth.

They will also test all the systems needed for future lunar missions, validating life support, navigation, spacesuits, communications, and other human operations in deep space.

But when are they supposed to reach this far-off point? First, the Orion capsule reached what is known as the moon’s “sphere of influence” on Sunday night. This is the point where the moon’s gravitational force is stronger than the force of the Earth.

At present, Orion is circling the moon. Once the capsule is on the dark side of the moon, approximately 7,000 kilometers from the surface, communications with Earth will be interrupted. For six hours, they will be able to view the far side of the moon, something no human being has ever seen with their own eyes—not even the astronauts of the Apollo program, as this region of the moon was always too dark or difficult for them to reach.

That six-hour flyby of the dark side of the moon is expected to begin Monday, April 6, at 2:45 pm EDT and 7:45 pm London time.

After that, the capsule will use the moon’s gravity to propel itself back to Earth. Splashdown, when the astronauts reach Earth, is scheduled for April 10 in the Pacific Ocean, not far from the coast of California, the tenth day of the mission.

Remember that you can follow the live broadcast of the Artemis II mission from NASA’s official channels.

What Has Happened so Far?

Since its successful launch on April 1 from Kennedy Space Center, the Artemis II crew has shared several spectacular photos, such as the featured image in this post, which shows mission specialist Christina Koch looking down at Earth through one of Orion’s main cabin windows.

This incredible photo of a Earth, taken on April 2, went viral on social media, referencing the famous “Blue Marble” image captured by the Apollo 17 astronauts in 1972.

View of Earth taken by astronaut Reid Wiseman from the window of the Orion spacecraft after completing the translunar injection maneuver on April 2, 2026.Photograph: Reid Wiseman/NASA/Getty Images



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The DOJ Misled a Judge About How It’s Using Voter Roll Data

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The DOJ Misled a Judge About How It’s Using Voter Roll Data


Last week in Rhode Island, in a hearing over the Trump administration’s efforts to access the state’s unredacted voter lists, US district judge Mary McElroy asked a Department of Justice lawyer what the agency had been doing with the voter roll data it already amassed from other states in recent months.

“We have not done anything yet,” said Eric Neff, the acting chief of the agency’s voting section, a core part of the DOJ’s civil rights division that focuses on enforcing federal laws that protect the right to vote. Neff added that the data the DOJ collected from states—which can include Social Security numbers, drivers licenses, dates of birth, and addresses—was being kept separate.

“The United States is taking extra concern to make sure that we’re complying with the Privacy Act in every conceivable way,” Neff added. The Privacy Act of 1974 regulates how government agencies collect and use personally identifiable information about US residents.

But Neff was not telling the truth: The DOJ, he later admitted, was pooling the data and already analyzing it to identify voting irregularities.

In a court document filed on March 27, Neff walked back his claims. “The United States represented that each data set was stored separately,” Neff wrote. “The United States also stated that no analysis had yet been conducted on the data. To correct and clarify the record, preliminary internal data analysis of the nonpublic voter registration data has begun. In particular, the Civil Rights Division has begun the process of identifying and quantifying the number and type of duplicate and deceased registered voters in each state.”

The revelation confirms what was widely speculated, which is that the DOJ appears to be pooling the data and using it to identify potential issues with suspected voting irregularities ahead of the midterms, which is a core part of Trump’s broad attack on elections.

Neff and the DOJ did not respond to repeated requests for comment.

Critics have grown increasingly concerned about the DOJ’s voting section, which has undergone a stark transformation since President Donald Trump has retaken office. A newly installed coterie of inexperienced but ultra-loyal lawyers in the DOJ’s voting section, many of whom have supported election denial conspiracy theories, have spent their time on forcing states to hand over their voter roll information.

The initiative began in May last year, when the Department of Justice sent letters to election officials in at least 48 states and Washington, DC, asking for unredacted voter rolls. Some Republican-led states immediately handed over the information, but dozens of others pushed back. As a result, Neff and his colleagues have sued 30 states, asking courts to force them to hand over the information. So far, courts have sided with the states, with judges already dismissing cases in California, Michigan, and Oregon.

In many of the lawsuits, state election officials pointed out the huge security risk involved in sharing such sensitive data, especially when it was unclear how the data would be stored or who it would be shared with. “We still have no idea what the government is doing with this data,” says David Becker, the head of the Center for Election Innovation and Research and a former Justice Department lawyer. “No idea where it is being stored, how it is being protected, or who has access to it. This data is incredibly sensitive. If someone has any of these three data points on any of us, Social Security number, driver’s license number, or date of birth, they can wreck us financially. This is why the states protect this data, and they do a good job of it.”



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My Favorite Apple Watch Bands (and Which Ones to Avoid)

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My Favorite Apple Watch Bands (and Which Ones to Avoid)


Apple Watches are smart little gadgets, but they don’t always fit the vibe. There were plenty of nights and dressier events when I left mine at home because—as much as I wanted to check my notifications discreetly—it didn’t match my outfit. I’ve also had my fair share of faux pas and just let the neon orange sport band clash with my neutral ensemble.

Fortunately, Apple Watch bands are a simple and relatively affordable way to zhuzh up the look of your wearable. Beyond aesthetics, different styles also impact performance and functionality. For example, personally, I don’t want a heavy stainless steel or high-quality leather band weighing me down during a sweaty workout, just as I wouldn’t wear a flimsy silicone band to a dinner party.

At WIRED, we’ve been testing bands since the very first Apple Watch launched in 2015. After years of wearing and swapping, I’ve rounded up the best bands for every occasion. Be sure to check out Best Apple Watch Accessories, Best Apple Watch, and Best Smartwatches for more recommendations.

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Best Band for Everyday Wear

The Nike Sport Loop has been my everyday band since 2020. I bought another in 2023 because I wanted to swap colors, and I figured after three years, I should buy a brand-new one, but it has held up remarkably well. Made from a blend of recycled polyester, Spandex, and nylon, it’s breathable and lightweight. The double-layered nylon weave is designed with dense loops that help prevent moisture from getting trapped against your skin. As long as you regularly hand-wash it to rid it of sweat buildup and dirt, it stays odor-free.

The hook-and-loop fastener and pull tab make it easy to adjust with one hand. It is Velcro, so beware, it can snag on softer fabrics. Still, for a band designed with sports in mind, it’s understated enough to wear almost anywhere. I wouldn’t wear it to a formal event, but for the office or casual social events, it’s perfect.

Best Titanium Apple Watch Band

  • Photograph: Boutayna Chokrane

  • Photograph: Boutayna Chokrane

  • Photograph: Boutayna Chokrane

Nomad originally designed the Stratos Band for the Apple Watch Ultra, but it fits just as well with the SE and Series 1 through 11. It’s easy to adjust, refined enough for the office, and backed by Grade 4 titanium hardware with a scratch-resistant DLC coating. FKM rubber links (PFA-free and antimicrobial, according to Nomad) add flexibility, durability, and water-resistance. The clasp is made with corrosion-resistant N52 magnets, which make it effortless to snap on, and it’s designed with a manual release button, so you don’t have to worry about it accidentally falling off. It’s technically suited for workouts and outdoor use, but it is a hefty band that I personally prefer for casual everyday wear.



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