22.06.2018

# Media

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Carbon Brief: Guest post: Seven key things to know about ‘negative emissions’

"Despite the ambitious long-term climate goals of the Paris Agreement, there remains a distinct lack of success at ushering in immediate and sustained reductions in global CO2 emissions. This cognitive dissonance has seen the topic of “negative emissions” – also known as “carbon dioxide removal” (CDR) – move into the limelight in climate science and policy discussions."

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22.06.2018

# New Publications

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Mayes, William Matthew; et al. (2018): Atmospheric CO2 sequestration in iron and steel slag: Consett, Co. Durham, UK.

Mayes, William Matthew; Riley, Alex L.; Gomes, Helena I.; Brabham, Peter; Hamlyn, Joanna; Pullin, Huw; Renforth, Phil (2018): Atmospheric CO2 sequestration in iron and steel slag. Consett, Co. Durham, UK. In: Environmental science & technology. DOI: 10.1021/acs.est.8b01883.

"Carbonate formation in waste from the steel industry could constitute a non-trivial proportion of global requirements to remove carbon dioxide from the atmosphere at potentially low cost. To constrain this potential, we examined atmospheric carbon dioxide sequestration in a >20 million tonne legacy slag deposit in northern England, UK. Carbonates formed from the drainage water of the heap had stable carbon and oxygen isotopes between -12 and -25 ‰ and -5 and -18 ‰ for δ13C and δ18O respectively, suggesting atmospheric carbon dioxide sequestration in high pH solutions. From analysis of solution saturation state, we estimate that between 280 and 2,900 tCO2 have precipitated from the drainage waters. However, by combining a thirty-seven-year dataset of the drainage water chemistry with geospatial analysis, we estimate that <1 % of the maximum carbon capture potential of the deposit may have been realised. This implies that uncontrolled deposition of slag is insufficient to maximise carbon sequestration, and there may be considerable quantities of unreacted legacy deposits available for atmospheric carbon sequestration."

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22.06.2018

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Earth911: Healthy Climate Alliance: Restore the Climate by 2050

"The Healthy Climate Alliance has a bold and achievable plan to return the global climate to the conditions our great-grandparents enjoyed at the dawn of the 20th century. They want to do it by 2050, using a combination of carbon-removal technologies and natural systems to pull carbon dioxide out of the air and store it in construction materials, the bottom of the oceans, and through other economically viable programs."

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15.06.2018

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Climate Science, Awareness and Solutions Blog: Get Out of Jail Free Card: Carbon Capture

"I am minimizing Communications, so that I can (really!) finish Sophie’s Planet, while also providing expert testimony for several lawsuits aimed at using the judicial branch of government to force the other branches of government to do their job.  However, there is enough popular misinterpretation of recent news about the cost of carbon capture that I should comment on that."

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13.06.2018

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Earth911: Healthy Climate Alliance Plan to Remove Carbon Dioxide From the Atmosphere

"The Healthy Climate Alliance has a bold and achievable plan to return the global climate to the conditions our great-grandparents enjoyed at the dawn of the 20th century. They want to do it by 2050, using a combination of carbon-removal technologies and natural systems to pull carbon dioxide out of the air and store it in construction materials, the bottom of the oceans, and through other economically viable programs. This is a hopeful and positive view of humanity’s ability to respond to the economic consequences of climate warming that can be added to the well-established, but limited, potential of reducing carbon emissions. The two, reductions and removal of carbon, are tools for managing climate conditions. We asked Peter Fiekowsky, founder of the Healthy Climate Alliance, to join us for the first of several conversations on the June 11, 2018, Earth911.com podcast."

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09.06.2018

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The Outline: Don’t focus on recycling carbon at the expense of reducing it

"Industrial scale methods of carbon recapture may be on the horizon, but it’s far from an end-all solution to our changing climate."

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09.06.2018

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Nature: Sucking carbon dioxide from air is cheaper than scientists thought

"Estimated cost of geoengineering technology to fight climate change has plunged since a 2011 analysis."

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09.06.2018

# New Publications

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Keith, David W.; et al. (2018): A Process for Capturing CO 2 from the Atmosphere

Keith, David W.; Holmes, Geoffrey; St. Angelo, David; Heidel, Kenton (2018): A Process for Capturing CO 2 from the Atmosphere. In Joule. DOI: 10.1016/j.joule.2018.05.006.

"We describe a process for capturing CO2 from the atmosphere in an industrial plant. The design captures ∼1 Mt-CO2/year in a continuous process using an aqueous KOH sorbent coupled to a calcium caustic recovery loop. We describe the design rationale, summarize performance of the major unit operations, and provide a capital cost breakdown developed with an independent consulting engineering firm."

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08.06.2018

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E&E News: This company thinks it can pull CO2 from the air cheaply

"A high-tech approach to combating climate change — often thought of as a futuristic last resort, decades away from reality — may now be a step closer to a commercial future."

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08.06.2018

# Media

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Atlantic: Climate Change Can Be Stopped by Turning Air Into Gasoline

"A Harvard professor says his company should be able to suck carbon dioxide out of the atmosphere, at industrial scales, by 2021."

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