Companies Expand Plans for Removing Carbon Dioxide From Air

Companies Expand Plans for Removing Carbon Dioxide From Air

On a field in Iceland, metal structures move in circles in an effort to take carbon gasses out of the atmosphere.

The goal of the fans and other machines is to take carbon dioxide from the air and store it underground. This technology is known as "direct air capture." Just a few years ago, it was considered unimaginable. But today, it is believed to be a serious tool in fighting climate change.

The air capture center in Iceland is named Orca. It is the largest center of its kind in the world. It captures about 4,000 tons of carbon dioxide per year.

But, compared to what experts say the planet needs, that amount is small. Some scientists say 10 billion tons of carbon dioxide must be removed yearly by 2050.

Julio Friedmann is a researcher at the Center on Global Energy Policy at Columbia University in New York. He said, within the next 30 years, "We need a worldwide expertise¹ that is twice as big as the oil and gas industry and that works in reverse."

Many scientific agencies say that, even if production of carbon gasses stopped, it would not be enough to avoid climate problems. These experts say huge amounts of carbon dioxide must be removed from the air and put underground.

"We have already failed on climate to the extent to which direct air capture is one of the many things we must do," Friedmann said.

Technology to remove carbon dioxide from the air has developed as urgent warnings have increased. Currently, a few companies operate big direct air capture plants. One of them is Climeworks which built the Orca plant in Iceland. Another is Carbon Engineering, which built a different kind of direct air capture plant in Canada's British Columbia.

Both companies have goals to expand.

Direct air capture at work

Climeworks' Orca plant is near Reykjavik, Iceland's capital. There, fans suck air into big black boxes where the carbon dioxide collects on a filter. A filter is a device that captures the unwanted substances passing through it.

The carbon dioxide is then heated with energy from volcanic² activity. Next, it is combined with water and pumped deep underground into basalt rock formations. Within a few years, Climeworks says, the carbon dioxide will turn into stone.

It takes a lot of energy to build and run Climeworks' plants. The Orca plant, for example, releases 10 percent of the carbon dioxide that it captures back into the atmosphere.

Another company, Carbon Engineering, has plants that can operate on renewable energy or natural gas. When natural gas is used, the carbon dioxide created is recaptured.

Carbon dioxide can also be injected into used up oil and gas fields. Carbon Engineering is using this method in partnership³ with Occidental Petroleum⁴, an oil company. The two businesses plan to build what might be the world's largest direct air capture center in the Permian Basin — the productive oil fields in the Southwestern United States.

Direct air capture plants around the world are removing about 8,160 tons of carbon dioxide from the air each year. That information comes from the U.N.'s International Energy Agency.

Big plans, problems

Daniel Egger is the chief commercial officer at Climeworks. He said that while his company is at an "industrial level," it is not where it needs to be to make a difference in fighting climate change.

Climateworks' plans call for removing several million tons of carbon dioxide yearly by 2030. Eggers said that would mean increasing capacity by 10 times every three years.

Colin McCormick said it currently costs about $500 to $600 per ton to remove carbon dioxide using direct air capture. McCormick is an official at Carbon Direct, based in New York City. The company invests in carbon removal projects and advises businesses on buying those services.

Within the next 10 years, experts say, the cost of direct air capture could fall to about $200 per ton or lower.

For years, companies did things like planting trees to make up for, or offset⁵, the carbon gasses they produced. But recent studies suggest many offsets⁶ are not good enough. McCormick said companies are looking for more carbon removal services that are easier to prove. Direct air capture, he said, is considered the "gold standard." In other words, it is the best choice available.

"This is really exploding," he said of companies investing in the technology. He said companies like Microsoft, Stripe and Shopify made a goal of removing carbon from the atmosphere two years ago.

Companies are setting targets for their operations of releasing no new carbon gasses. As a result, some are choosing to buy carbon removal services such as direct air capture to reach those goals.

And individuals can buy carbon recovery services, too. Climeworks offers agreements starting at $8 a month to people who want to pay for the removal of the carbon gasses they produce.

Words in This Story

fan –n. a machine or device that moves air around

reverse –v. to cause a process to stop or return to an earlier state

extent –n. the point or limit to which something reaches and no further

suck –v. to pull in liquid or air forcefully inward

basalt –n. a kind of rock formed from volcanic activity

capacity –n. the amount of something that can be produced by a factory or company

commercial –adj. concerned with earning money

1 expertise   

n.专门知识(或技能等)，专长

参考例句：

• We were amazed at his expertise on the ski slopes.他斜坡滑雪的技能使我们赞叹不已。
• You really have the technical expertise in a new breakthrough.让你真正在专业技术上有一个全新的突破。

2 volcanic   

adj.火山的；象火山的；由火山引起的

参考例句：

• There have been several volcanic eruptions this year.今年火山爆发了好几次。
• Volcanic activity has created thermal springs and boiling mud pools.火山活动产生了温泉和沸腾的泥浆池。

3 partnership   

n.合作关系，伙伴关系

参考例句：

• The company has gone into partnership with Swiss Bank Corporation.这家公司已经和瑞士银行公司建立合作关系。
• Martin has taken him into general partnership in his company.马丁已让他成为公司的普通合伙人。

4 petroleum   

n.原油，石油

参考例句：

• The Government of Iran advanced the price of petroleum last week.上星期伊朗政府提高了石油价格。
• The purpose of oil refinery is to refine crude petroleum.炼油厂的主要工作是提炼原油。

5 offset   

n.分支，补偿；v.抵消，补偿

参考例句：

• Their wage increases would be offset by higher prices.他们增加的工资会被物价上涨所抵消。
• He put up his prices to offset the increased cost of materials.他提高了售价以补偿材料成本的增加。

6 offsets   

n.开端( offset的名词复数 )；出发v.抵消( offset的第三人称单数 )；补偿；（为了比较的目的而）把…并列（或并置）；为（管道等）装支管

参考例句：

• The following paragraphs deal with intra-source offsets and the so-called \"bubble\" concept. 下面讨论污染源内部的补偿和所谓的“泡泡”概念。 来自英汉非文学 - 环境法 - 环境法
• The preceding paragraphs were concerned with inter-source offsets. 前文牵涉到污染源之间的补偿。 来自英汉非文学 - 环境法 - 环境法