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How Does Carbon Capture Work?

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How Does Carbon Capture Work?

The world has a carbon downside. To unravel it’s going to require shifting away from burning carbon-emitting fuels and relying as a substitute on cleaner power sources like wind generators and photo voltaic cells. However is there something we will do about all of the carbon dioxide that’s already within the air, and the thousands and thousands of tons being emitted daily?

For many of human historical past, carbon emissions have been balanced out by nature, stated Rebecca Benner, a deputy director of the Nature Conservancy, however now we’re “producing CO2 a lot sooner than nature can recapture it.”

Carbon seize is an umbrella time period for applied sciences, a few of them first proposed within the Nineteen Eighties, that intention to take carbon dioxide out of the ambiance or catch emissions and retailer them earlier than they’re launched into the air.

Although carbon seize just isn’t but being finished on a big scale, it’s being pushed by corporations and politicians as a key a part of plans to information the nation to a carbon-neutral future. Inspired by tax incentives included within the Inflation Discount Act, some corporations have proposed tasks in the US to seize CO2 and both use it or retailer it deep underground. These proposals have been met with skepticism, although, by some environmentalists who say carbon seize might distract from efforts to cut back emissions within the first place.

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What’s carbon seize, precisely?

Pure ecosystems like wetlands and forests soak up carbon from the air and switch it into biomass, part of Earth’s pure carbon cycle. So planting timber is a low-tech solution to seize carbon, and one which we all know works on a big scale. However with continued use of fossil fuels, the quantity of carbon dioxide within the ambiance is rising sooner than pure processes alone have been capable of counteract, and specialists have sought methods to reinforce what nature can do.

Efforts to plant timber and different small-scale experiments are occurring across the nation. And two larger-scale strategies are being developed: post-combustion seize and direct air seize.

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Put up-Combustion Seize

This know-how captures emissions — referred to as flue gasoline — from smokestacks at coal or pure gasoline energy vegetation or factories that produce supplies like concrete and metal. It’s at the moment the primary carbon-capture methodology being pursued in the US, together with tasks within the Midwest that may entice emissions from ethanol vegetation. Industrial processes account for twenty-four % of world carbon emissions.

As soon as the flue gasoline is captured, CO2 is separated from the gasoline’s different elements after which both put to a brand new use or saved.

“There are totally different post-combustion applied sciences you need to use,” stated Howard Herzog, a analysis engineer on the Massachusetts Institute of Know-how’s Vitality Initiative. The “most mature” and commercially viable methodology, he stated, makes use of chemical compounds referred to as amines to “scrub” the CO2 out of the flue gasoline. The amines bind to CO2 at decrease temperatures, after which will launch it once more when heated, yielding near pure carbon dioxide.

Direct Air Seize

To a layman, the phrases “carbon seize” would possibly recommend one thing like an enormous air filter. A know-how like that does exist, and the Infrastructure Funding and Jobs Act, handed in 2021, contains cash to finance a sequence of testing websites. However specialists say that up to now, direct air seize is just too costly and makes use of an excessive amount of power for the quantity of carbon dioxide that it might seize.

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Gasoline from an

ethanol plant

Over 90% CO2

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Gasoline from a

cement plant

15% CO2

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Gasoline from an ethanol plant

Over 90% CO2

Gasoline from a cement plant

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15% CO2

Gasoline from an ethanol plant

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Over 90% CO2

Gasoline from a cement plant

15% CO2

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The New York Instances

Carbon seize is extra environment friendly when it’s used on sources with excessive concentrations of carbon dioxide, just like the gasoline launched throughout ethanol manufacturing, which is sort of fully CO2. Cement manufacturing releases a gasoline that’s round 15 % carbon dioxide. The ambiance, against this, is about 0.04 % carbon dioxide, so over one thousand tons of abnormal air must be processed to be able to seize a single ton of CO2.


It’s been captured. Now what?

As soon as captured and remoted, the CO2 is pressurized right into a liquid state in order that it may be transported by a pipeline to a spot the place it may be used or saved. Two pipeline tasks at the moment within the works would carry carbon dioxide from Midwestern ethanol vegetation to websites in North Dakota and Illinois.

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There are dangers: Like several pipeline, a CO2 pipeline can rupture, as one did in Mississippi in 2020, elevating considerations about security.

“We’re not simply speaking about pipelines within the Midwest, however an enormous nationwide build-out,” stated Jim Walsh, coverage director for Meals & Water Watch, an environmental group that opposes the Midwestern pipeline tasks. “And there’s no federal oversight physique for CO2 pipeline tasks.”

Placing carbon dioxide to make use of

There are industrial makes use of for carbon dioxide, however a lot of them consequence within the gasoline finally being launched again into the ambiance. The CO2 used to carbonate drinks, for instance, begins to flee the second a soda can is cracked open, and dry ice returns to the air because it melts.

The opposite main use of CO2 is within the power trade. The gasoline is injected into dwindling older oil wells to attempt to power extra crude out of the bottom. Many environmentalists are skeptical of a course of that makes use of captured carbon to acquire extra fossil fuels that may launch extra carbon.

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In enhanced oil restoration, CO2 is injected into an oil reservoir, creating sufficient strain to push leftover oil to current wells.

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In enhanced oil restoration, CO2 is injected into an oil reservoir, creating sufficient strain to push leftover oil to current wells.

In enhanced oil restoration, CO2 is injected into an oil reservoir, creating sufficient strain to push leftover oil to current wells.

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Sequestration

The choice to utilizing the carbon dioxide is storing it the place it can not escape into the ambiance. Right now, that is finished by injecting it deep underground.


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To retailer CO2 underground, it’s injected at the very least 2,600 toes, below an impermeable layer of rock.

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Close by, a second properly is drilled to detect leaks.

Close by, a second properly is drilled to detect leaks.

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To retailer CO2 underground, it’s injected at the very least 2,600 toes, below an impermeable layer of rock.

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Close by, a second properly is drilled to detect leaks.

To retailer CO2 underground, it’s injected at the very least 2,600 toes, below an impermeable layer of rock.

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Solely sure rock formations are appropriate for storing carbon this fashion. The rock should be at the very least half a mile underground, deep sufficient to remain away from floor water. It should be porous and permeable, like sandstone or limestone, so there will likely be house inside it for the injected gasoline to occupy, the way in which water poured right into a bucket of sand fills the areas between the grains. And the formation will need to have a layer of dense rock, like shale, above it, in order that the carbon dioxide received’t, in concept, have the ability to seep out to the floor.

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Can these applied sciences make a major distinction to local weather change?

Some specialists and environmentalists have pushed again in opposition to efforts to develop carbon seize, saying it’s at finest solely a partial resolution, and at worst it could impede a world transition to scrub power by letting the fossil gas trade proceed doing enterprise as common.

“In the event you’re doing too little on the emissions mitigation facet, then there is no such thing as a level of carbon dioxide elimination,” stated Glen Peters, analysis director on the Heart for Worldwide Local weather Analysis in Norway.

A latest examine discovered that after considering the power used to seize and isolate CO2 from flue gasoline at a fossil fuel-burning industrial plant, the carbon seize system would cut back the plant’s internet emissions by solely 10 to 11 %, not the estimated 80 to 90 % cited by proponents.

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Others say that we have to pursue a number of routes to gradual local weather change “There is no such thing as a 100-percent resolution,” Dr. Herzog of M.I.T. stated. “We want quite a lot of 10- and 20- % options, and that is one among them.”

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The 39th president will be buried later at his Georgia home. Here’s the latest.

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The 39th president will be buried later at his Georgia home. Here’s the latest.

A weeklong series of tributes to former President Jimmy Carter culminates on Thursday with a solemn state funeral in Washington that will bring together all five of the nation’s living presidents, who will temporarily put down their partisan swords to bid farewell to one of their own.

Mr. Carter, who has lain in state for the past two days at the Capitol, is being brought to Washington National Cathedral for a 10 a.m. service featuring all the rituals of a national send-off. Then he will be flown back to his hometown, Plains, Ga., for burial outside the modest ranch house where he lived most of his life and died last week.

The service represents the pinnacle of America’s honors to its 39th president, who sought to heal the nation after the traumas of the Watergate scandal and the Vietnam War as he presided over a tumultuous time, from 1977 to 1981.

Here’s what to know:

  • Eulogies from two presidents: President Biden will deliver a eulogy, and the eulogies written by former President Gerald R. Ford and former Vice President Walter F. Mondale before their own deaths will be read by their sons, Steven Ford and Ted Mondale. Mr. Carter defeated Mr. Ford in the 1976 election but they later became friends, while Mr. Mondale was his close partner for four years in the White House. Jason Carter, the former president’s grandson, and Stuart E. Eizenstat, a longtime friend and White House domestic adviser to Mr. Carter, will also deliver eulogies. Here is a look at the speakers and performers.

  • Going home: Mr. Carter’s coffin will be brought from the cathedral to Joint Base Andrews in Maryland for his last flight aboard a presidential jet used as Air Force One. After a final private service at Maranatha Baptist Church in Plains, where Mr. Carter taught Sunday school deep into his 90s, a motorcade with the coffin will make a last journey through Plains to the Carter home. Navy jets will conduct a flyover in missing-man formation and then Mr. Carter will be interred in a family plot next to Rosalynn Carter, his wife of 77 years, who died in late 2023. Here is the schedule for the day.

  • Five living presidents: In addition to Mr. Biden, former Presidents Bill Clinton, George W. Bush and Barack Obama, as well as President-elect Donald J. Trump, are also expected to attend, making the funeral the first gathering of the so-called presidents club since Mr. Trump’s election win in November. The same group is expected to gather again just 11 days later for his inauguration. Mr. Trump will be the odd man out among the presidents, who view him as a dangerous force and in some cases have denounced him harshly. Even Mr. Bush, the only other Republican in the group, has written in other candidates rather than cast a ballot for Mr. Trump.

  • Day of mourning: Mr. Biden, who may be the surviving president who was closest to Mr. Carter, has declared Thursday a national day of mourning and closed the federal government to all but necessary operations while flags fly at half-staff. Here’s a look at the tradition.

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UK government seeks to quell turmoil in bond markets as borrowing costs soar

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UK government seeks to quell turmoil in bond markets as borrowing costs soar

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The British government sought to quell tumult in UK bond markets on Thursday by vowing to stick to its fiscal rules even as borrowing costs hit their highest level since the financial crisis.

Darren Jones, number two at the UK Treasury, appeared in parliament to answer urgent questions on the markets turmoil after the 10-year gilt yield rose to 4.93 per cent, its highest since 2008, and the pound dropped as much as 1 per cent against the dollar to its lowest for more than a year.

“UK gilt markets continue to function in an orderly way,” Jones told MPs. “There should be no doubt of the government’s commitment to economic stability and sound public finances. This is why meeting the fiscal rules is non-negotiable.”

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Jones’ appearance came after Sir Lindsay Hoyle, Speaker of the House of Commons, accepted an urgent question from the Conservative opposition about the “growing pressure of borrowing costs on the public finances”.

Chancellor Rachel Reeves, who is about to leave for a long-scheduled trip to China, dispatched Jones, chief secretary to the Treasury, to answer.

UK borrowing costs have risen sharply as investors worry about the government’s heavy borrowing needs and the growing threat of stagflation, which combines lacklustre growth with persistent price pressures.

“The sell-off in [the pound] and gilts reflects a deterioration in the UK’s fiscal prospects,” said analysts at Brown Brothers Harriman.

On Thursday, the 10-year gilt yield rose as much as 0.12 percentage points before easing back to 4.83 per cent. Sterling was swept up in the sell-off, dropping to $1.224, its weakest since November 2023, before staging a partial recovery.

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Jones argued it was normal for gilt prices to vary and that there was still strong underlying demand for UK government bonds.

“The latest auction held yesterday received three times as many bids as the amount on offer,” he said.

The minister said the Treasury was still working on a multiyear spending review due this summer on the basis of assumptions set out in the October Budget.

However, he acknowledged that the Office for Budget Responsibility, the independent Budget watchdog, would come up with fresh forecasts on March 26, which could then have an impact on discussions with ministers.

The recent bond market strains also raise the spectre of tax rises or spending cuts. The Treasury has signalled that, if necessary, it would reduce expenditure rather than increase taxes.

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Shadow chancellor Mel Stride, who had posed the urgent question, said Reeves should have attended parliament herself. 

“Where is the chancellor?” he asked. “It is a bitter regret that at this difficult time, with these serious issues, she herself is nowhere to be seen.” 

He later called on Reeves to cancel her China trip “and focus on this country instead”, as he attacked Labour’s “panicked attempt to reassure the markets on the economic mess of their own making”.

Reeves left herself a slender £9.9bn of headroom against her revised fiscal rules in last year’s autumn Budget even after announcing a £40bn tax-raising package that aimed to “wipe the slate clean” on public finances.

The chancellor’s key fiscal rule is a promise to fund all day-to-day public spending with tax receipts by 2029-30.

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Increases in government debt yields have since put that budgetary wriggle room under threat. The level of bond yields is an important determinant of the budget headroom, given its implications for the government’s interest bill, which exceeds £100bn a year.

“Investors are looking for some sort of guidance from somebody but the government has just said there is no problem,” said Tomasz Wieladek, chief European economist at T Rowe Price. “The Bank of England will stick this out as long as possible,” he added, saying the moves were not big enough to merit anything beyond a verbal response from policymakers.

The gilts market could suffer another bout of selling on Friday, analysts said, if closely watched jobs data in the US was to push yields higher on US Treasuries, dragging gilts with them.

“It can turn extremely grim for gilts if we see a strong payroll,” said Pooja Kumra, a UK rates strategist at TD Securities.

Analysts have said the simultaneous sell-off of gilts and the pound carried echoes of the reaction triggered by Liz Truss’s “mini” Budget in 2022.

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But many investors think the situation is short of the 2022 gilts crisis.

“I do anticipate things to start bottoming out . . . On gilts the washout already happened last year,” said Geoffrey Yu, a senior strategist at BNY. “I’m not denying there are issues in the UK, but to suddenly draw comparisons to 2022, I think that is pushing things.”

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LA fires: What's happening in Los Angeles, and what caused the wildfires?

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LA fires: What's happening in Los Angeles, and what caused the wildfires?

Moment house collapses in Studio City as LA wildfires rage on

Out-of-control wildfires are ripping across parts of Los Angeles, leading to at least five deaths, burning down hundreds of buildings, and prompting more than 130,000 people to flee their homes in America’s second-largest city.

Despite the efforts of firefighters, the biggest blazes remain totally uncontained – with weather conditions and the underlying impact of climate change expected to continue fanning the flames for days to come.

What’s the latest?

More than 137,000 people have been forced to leave their homes – many of them simply carrying whatever belongings they can.

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Police say at least five people have died, and their bodies found near the Eaton Fire – but their cause of death is not yet known.

Like the even larger Palisades Fire, the Eaton Fire remains totally uncontained. Meanwhile, the new Sunset Fire is menacing the well-known Hollywood Hills area.

More than 1,000 structures are known to have been destroyed – including houses, schools and businesses on the iconic Sunset Boulevard. A fire ecologist has told the BBC that “entire neighbourhoods… have been wiped out”.

Among the celebrities who have lost their homes are Leighton Meester and Adam Brody, who attended the Golden Globes just days ago, and Paris Hilton.

There is a glimmer of hope for firefighters, as the fire weather outlook for southern California has been downgraded from “extremely critical” to “critical”.

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But BBC weather forecaster Sarah Keith-Lucas says there is no rain forecast in the area for at least the next week, meaning conditions remain ripe for fire.

Mass disruption has been reported due to traffic buildup. A number of schools and the the University of California, Los Angeles (UCLA) have been forced to close.

A political row about the city’s preparedness has erupted after it emerged that some firefighters’ hoses have run dry – an issue seized upon by US President-elect Donald Trump.

Where are the fires?

A BBC map plots the locations of five fires in Los Angeles - the Sunset, Hurst and Lidia fires, and the largest two, the Palisades and Eaton fires. Prominent locations including the Hollywood Hill are marked nearby

There are at least five fires raging in the wider area, according to California fire officials early on Thursday:

  • Palisades: The first fire to erupt on Tuesday and the biggest fire in the region, which could become the most destructive fire in state history. It has scorched a sizable part of land, covering more than 17,200 acres, including the upscale Pacific Palisades neighbourhood
  • Eaton: It has struck the northern part of Los Angeles, blazing through cities such as Altadena. It’s the second biggest fire in the area, burning around 10,600 acres
  • Hurst: Located just north of San Fernando, it began burning on Tuesday night and has grown to 855 acres, though firefighters have had some successlimited in containing it
  • Lidia: It broke out on Wednesday afternoon in the mountainous Acton area north of Los Angeles and grew to cover almost 350 acres. Authorities say it has been 40% contained
  • Sunset: It broke out Wednesday evening in Hollywood Hills, growing to about 20 acres in less than an hour. It now covers around 43 acres

The earlier Woodley and Olivas fires have now been contained, according to local fire authorities.

How did the LA fires start?

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Officials have pointed to high winds and drought in the area, which has made vegetation very dry and easy to burn.

The likely impact of climate change has also been cited been blamed – although the exact circumstances remain unclear.

Some 95% of wildfires in the area are started by humans, according to David Acuna, a battalion chief at the Californian Fire Service, although officials are yet to state how they think the current fires started.

An important factor that has been cited in the spread of the blazes is the Santa Ana winds, which blow from inland towards the coast. With speeds of more than 60mph (97 km/h), these are believed to have fanned the flames.

Malibu seafront left devastated after wildfires
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What role has climate change played?

Although strong winds and lack of rain are driving the blazes, experts say climate change is altering the background conditions and increasing the likelihood of such fires.

US government research is unequivocal in linking climate change to larger and more severe wildfires in the western United States.

“Climate change, including increased heat, extended drought, and a thirsty atmosphere, has been a key driver in increasing the risk and extent of wildfires in the western United States,” the National Oceanic and Atmospheric Administration says.

And following a very warm summer and lack of rain in recent months, California is particularly vulnerable.

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Fire season in southern California is generally thought to stretch from May to October – but the state’s governor, Gavin Newsom, has pointed out earlier that blazes had become a perennial issue. “There’s no fire season,” he said. “It’s fire year.”

Speaking to the BBC, Mr Acuna said the Palisades Fire represented only the third occasion in the past 30 years that a major fire had broken out in January.

A map titled: "How big is the area burnt by the Palisades wildfires on the outskirts of LA?" This shows an outline of the shape and size of the fire superimposed on maps of New York City and London - showing that the fire would cover a significant area of both city centres
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