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How carbon capture works and the debate about whether it's a future climate solution
How carbon capture works and the debate about whether it's a future climate solution

Associated Press

time26-06-2025

  • Science
  • Associated Press

How carbon capture works and the debate about whether it's a future climate solution

Power plants and industrial facilities that emit carbon dioxide, the primary driver of global warming, are hopeful that Congress will keep tax credits for capturing the gas and storing it deep underground. The process, called carbon capture and sequestration, is seen by many as an important way to reduce pollution during a transition to renewable energy. But it faces criticism from some conservatives, who say it is expensive and unnecessary, and from environmentalists, who say it has consistently failed to capture as much pollution as promised and is simply a way for producers of fossil fuels like oil, gas and coal to continue their use. Here's a closer look: How does the process work? Carbon dioxide is a gas produced by burning of fossil fuels. It traps heat close to the ground when released to the atmosphere, where it persists for hundreds of years and raises global temperatures. Industries and power plants can install equipment to separate carbon dioxide from other gases before it leaves the smokestack. The carbon then is compressed and shipped — usually through a pipeline — to a location where it's injected deep underground for long-term storage. Carbon also can be captured directly from the atmosphere using giant vacuums. Once captured, it is dissolved by chemicals or trapped by solid material. Lauren Read, a senior vice president at BKV Corp., which built a carbon capture facility in Texas, said the company injects carbon at high pressure, forcing it almost two miles below the surface and into geological formations that can hold it for thousands of years. The carbon can be stored in deep saline or basalt formations and unmineable coal seams. But about three-fourths of captured carbon dioxide is pumped back into oil fields to build up pressure that helps extract harder-to-reach reserves — meaning it's not stored permanently, according to the International Energy Agency and the U.S. Environmental Protection Agency. How much carbon dioxide is captured? The most commonly used technology allows facilities to capture and store around 60% of their carbon dioxide emissions during the production process. Anything above that rate is much more difficult and expensive, according to the IEA. Some companies have forecast carbon capture rates of 90% or more, 'in practice, that has never happened,' said Alexandra Shaykevich, research manager at the Environmental Integrity Project's Oil & Gas Watch. That's because it's difficult to capture carbon dioxide from every point where it's emitted, said Grant Hauber, a strategic adviser on energy and financial markets at the Institute for Energy Economics and Financial Analysis. Environmentalists also cite potential problems keeping it in the ground. For example, last year, agribusiness company Archer-Daniels-Midland discovered a leak about a mile underground at its Illinois carbon capture and storage site, prompting the state legislature this year to ban carbon sequestration above or below the Mahomet Aquifer, an important source of drinking water for about a million people. Carbon capture can be used to help reduce emissions from hard-to-abate industries like cement and steel, but many environmentalists contend it's less helpful when it extends the use of coal, oil and gas. A 2021 study also found the carbon capture process emits significant amounts of methane, a potent greenhouse gas that's shorter-lived than carbon dioxide but traps over 80 times more heat. That happens through leaks when the gas is brought to the surface and transported to plants. About 45 carbon-capture facilities operated on a commercial scale last year, capturing a combined 50 million metric tons of carbon dioxide — a tiny fraction of the 37.8 gigatonnes of carbon dioxide emissions from the energy sector alone, according to the IEA. It's an even smaller share of all greenhouse gas emissions, which amounted to 53 gigatonnes for 2023, according to the latest report from the European Commission's Emissions Database for Global Atmospheric Research. The Institute for Energy Economics and Financial Analysis says one of the world's largest carbon capture utilization and storage projects, ExxonMobil's Shute Creek facility in Wyoming, captures only about half its carbon dioxide, and most of that is sold to oil and gas companies to pump back into oil fields. Future of US tax credits is unclear Even so, carbon capture is an important tool to reduce carbon dioxide emissions, particularly in heavy industries, said Sangeet Nepal, a technology specialist at the Carbon Capture Coalition. 'It's not a substitution for renewables ... it's just a complementary technology,' Nepal said. 'It's one piece of a puzzle in this broad fight against the climate change.' Experts say many projects, including proposed ammonia and hydrogen plants on the U.S. Gulf Coast, likely won't be built without the tax credits, which Carbon Capture Coalition Executive Director Jessie Stolark says already have driven significant investment and are crucial U.S. global competitiveness. They remain in the Senate Finance Committee's draft reconciliation bill, after another version passed the House, though the Carbon Capture Coalition said inflation has already slashed their value and could limit projects. ___ Associated Press reporter Jack Brook in New Orleans contributed to this report. ___ The Associated Press' climate and environmental coverage receives financial support from multiple private foundations. AP is solely responsible for all content. Find AP's standards for working with philanthropies, a list of supporters and funded coverage areas at

How carbon capture works and the debate about whether it's a future climate solution
How carbon capture works and the debate about whether it's a future climate solution

The Independent

time26-06-2025

  • Science
  • The Independent

How carbon capture works and the debate about whether it's a future climate solution

Power plants and industrial facilities that emit carbon dioxide, the primary driver of global warming, are hopeful that Congress will keep tax credits for capturing the gas and storing it deep underground. The process, called carbon capture and sequestration, is seen by many as an important way to reduce pollution during a transition to renewable energy. But it faces criticism from some conservatives, who say it is expensive and unnecessary, and from environmentalists, who say it has consistently failed to capture as much pollution as promised and is simply a way for producers of fossil fuels like oil, gas and coal to continue their use. Here's a closer look: How does the process work? Carbon dioxide is a gas produced by burning of fossil fuels. It traps heat close to the ground when released to the atmosphere, where it persists for hundreds of years and raises global temperatures. Industries and power plants can install equipment to separate carbon dioxide from other gases before it leaves the smokestack. The carbon then is compressed and shipped — usually through a pipeline — to a location where it's injected deep underground for long-term storage. Carbon also can be captured directly from the atmosphere using giant vacuums. Once captured, it is dissolved by chemicals or trapped by solid material. Lauren Read, a senior vice president at BKV Corp., which built a carbon capture facility in Texas, said the company injects carbon at high pressure, forcing it almost two miles below the surface and into geological formations that can hold it for thousands of years. The carbon can be stored in deep saline or basalt formations and unmineable coal seams. But about three-fourths of captured carbon dioxide is pumped back into oil fields to build up pressure that helps extract harder-to-reach reserves — meaning it's not stored permanently, according to the International Energy Agency and the U.S. Environmental Protection Agency. How much carbon dioxide is captured? The most commonly used technology allows facilities to capture and store around 60% of their carbon dioxide emissions during the production process. Anything above that rate is much more difficult and expensive, according to the IEA. Some companies have forecast carbon capture rates of 90% or more, 'in practice, that has never happened,' said Alexandra Shaykevich, research manager at the Environmental Integrity Project's Oil & Gas Watch. That's because it's difficult to capture carbon dioxide from every point where it's emitted, said Grant Hauber, a strategic adviser on energy and financial markets at the Institute for Energy Economics and Financial Analysis. Environmentalists also cite potential problems keeping it in the ground. For example, last year, agribusiness company Archer-Daniels-Midland discovered a leak about a mile underground at its Illinois carbon capture and storage site, prompting the state legislature this year to ban carbon sequestration above or below the Mahomet Aquifer, an important source of drinking water for about a million people. Carbon capture can be used to help reduce emissions from hard-to-abate industries like cement and steel, but many environmentalists contend it's less helpful when it extends the use of coal, oil and gas. A 2021 study also found the carbon capture process emits significant amounts of methane, a potent greenhouse gas that's shorter-lived than carbon dioxide but traps over 80 times more heat. That happens through leaks when the gas is brought to the surface and transported to plants. About 45 carbon-capture facilities operated on a commercial scale last year, capturing a combined 50 million metric tons of carbon dioxide — a tiny fraction of the 37.8 gigatonnes of carbon dioxide emissions from the energy sector alone, according to the IEA. It's an even smaller share of all greenhouse gas emissions, which amounted to 53 gigatonnes for 2023, according to the latest report from the European Commission's Emissions Database for Global Atmospheric Research. The Institute for Energy Economics and Financial Analysis says one of the world's largest carbon capture utilization and storage projects, ExxonMobil's Shute Creek facility in Wyoming, captures only about half its carbon dioxide, and most of that is sold to oil and gas companies to pump back into oil fields. Future of US tax credits is unclear Even so, carbon capture is an important tool to reduce carbon dioxide emissions, particularly in heavy industries, said Sangeet Nepal, a technology specialist at the Carbon Capture Coalition. 'It's not a substitution for renewables ... it's just a complementary technology,' Nepal said. 'It's one piece of a puzzle in this broad fight against the climate change.' Experts say many projects, including proposed ammonia and hydrogen plants on the U.S. Gulf Coast, likely won't be built without the tax credits, which Carbon Capture Coalition Executive Director Jessie Stolark says already have driven significant investment and are crucial U.S. global competitiveness. They remain in the Senate Finance Committee's draft reconciliation bill, after another version passed the House, though the Carbon Capture Coalition said inflation has already slashed their value and could limit projects. ___ Associated Press reporter Jack Brook in New Orleans contributed to this report. ___ The Associated Press' climate and environmental coverage receives financial support from multiple private foundations. AP is solely responsible for all content. Find AP's standards for working with philanthropies, a list of supporters and funded coverage areas at

Pakistan approves $42 million to transform ship-breaking yard into ‘model green facility'
Pakistan approves $42 million to transform ship-breaking yard into ‘model green facility'

Arab News

time25-06-2025

  • Business
  • Arab News

Pakistan approves $42 million to transform ship-breaking yard into ‘model green facility'

ISLAMABAD: Pakistan's government has approved Rs12 billion [$42 million] to transform a key ship-breaking yard in the country's southwestern Balochistan province into a 'model green facility' to reduce pollution and manage hazardous waste, the maritime affairs ministry said on Wednesday. Gadani in Balochistan once used to be one of the world's main destinations for end-of-life vessels. Here, old and decommissioned ships were regularly dismantled and their parts, especially steel, were recycled, reused or resold. Business at the shipyard has declined in recent years as Pakistan navigates a tricky path to recovery from a prolonged macroeconomic crisis. The ship-breaking industry has also taken a hit due to worldwide calls to stop beach scrapping because of the danger and environmental damage from pollutants left to drain into the sea. Workers, earning as little as $4 a day here, face health hazards such as exposure to lead paint and asbestos when working on ships. 'Federal Minister for Maritime Affairs, Muhammad Junaid Anwar Chaudhry has announced the approval of Rs12 billion for the transformation of Gadani Ship-Breaking Yard into a model green facility, aligning the maritime sector with international climate and environmental standards,' the ministry said. Chaudhry, chairing a meeting to discuss the ship-breaking yard, stressed the need for ship recycling to evolve to meet global sustainability standards. He added the transformation is essential to reduce pollution, manage hazardous waste responsibly and contribute to a greener maritime future. 'The minister said this major initiative focuses not only on modernizing infrastructure and safety mechanisms but also on addressing the climate crisis through green shipping and environmentally responsible ship recycling,' the statement added. Pakistan is consistently ranked among the world's worst-affected countries due to climate change effects. Pakistan has regularly experienced irregular weather patterns such as heatwaves and unusually heavy rains that have triggered flash floods across the country. Syed Zafar Ali Shah, the secretary of maritime affairs, said a 30-bed hospital, residential blocks for medical staff and labor colonies will be constructed as part of the social uplift component of the project. The official said that 32 kilometers of road, a school, a public park and modern water supply and treatment systems will be installed to support the workforce and local community in Gadani as part of the project. Pakistan became a party to the 2009 Hong Kong Convention in December 2023, which aims to improve hazardous working conditions in ship recycling facilities worldwide. The minister stressed that the Hong Kong International Convention for the Safe and Environmentally Sound Recycling of Ships (HKC) must be strictly observed. He instructed authorities to put in place a 'robust monitoring mechanism' to ensure transparency and timely implementation of the project. Chaudhry noted that Gadani produces over 1.2 million tons of steel annually, making it a critical part of Pakistan's scrap and steel supply chain. 'Gadani was once among the world's largest ship-breaking hubs,' Chaudhry noted. 'Today, it stands at a crossroads— either we modernize it in line with green shipping goals or risk further decline.'

US Senate to vote this week on bill to bar California 2035 EV plan
US Senate to vote this week on bill to bar California 2035 EV plan

Reuters

time20-05-2025

  • Automotive
  • Reuters

US Senate to vote this week on bill to bar California 2035 EV plan

WASHINGTON, May 20 (Reuters) - The U.S. Senate plans to vote this week to bar California's landmark plan to end the sale of gasoline-only vehicles by 2035 that has been adopted by 11 other states, Majority Leader John Thune said on Tuesday. The U.S. House approved legislation on May 1 to repeal a waiver granted by the U.S. Environmental Protection Agency under former President Joe Biden in December, allowing California to mandate at least 80% electric vehicles by 2035. Major automakers had urged the action, saying the rules are not feasible. California says the rules are essential to cut pollution and contends the that vote is illegal.

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