Carbon capture

A startup in Hawaii just launched the world’s first ocean-assisted carbon removal plant
www.fastcompany.com/90750797/a-startup-in-hawaii-just-launch…
On a remote stretch of coastline on the Big Island of Hawaii, a startup is pioneering “ocean-assisted” carbon removal—a process that can both permanently store CO2 and help reduce ocean acidification. The startup, called Heimdal, pumps saltwater into a machine that uses electricity to rearrange molecules in the water, removing acid. It can then sell the acid it removes, which ends up in the form of hydrochloric acid. The process also produces hydrogen and oxygen. The de-acidified seawater can be returned to the ocean, where it will naturally capture CO2…

Heimdal sees advantages to working with the ocean instead. There’s a greater concentration of CO2 in the water than in the air, so it can capture more in less volume.

DB2

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US launches $3.5 billion programme to speed development of up carbon removal tech
www.wionews.com/world/us-launches-35-billion-programme-to-sp…
The US Energy Department launched a program on Thursday to fund four large-scale projects across the country that can remove carbon dioxide from the air, investing $3.5 billion in a nascent technology the Biden administration says is necessary to meet a goal of achieving net zero emissions by mid century…

The DOE said that by midcentury, carbon removal will need to be deployed at the gigaton scale…

DB2

Why the US climate bill might struggle to deliver on carbon capture
www.climatechangenews.com/2022/08/16/why-the-us-climate-bill…
So far, the uptake of carbon capture technologies has been slow. The costs are high, and these technologies can require miles of pipeline and vast amounts of underground storage…The bill includes two primary types of carbon capture…Carbon capture and storage…The bill also seeks to drive deployment of direct air capture technologies…

Under the bill, tax credits for capturing carbon dioxide at industrial facilities and power plants would increase from $50 per ton today to up to $85 per ton if the carbon is stored. If the carbon is used instead for oil drilling, the credit would go from $30 today to $60 per ton. Credits for capturing carbon from air via direct air capture would also dramatically jump, from $50 to $180 per ton if the carbon dioxide is stored, and from $35 currently to $130 per ton if it is used…

There’s a reason the uptake of carbon capture, particularly direct air capture, has been slow. Direct air capture cost estimates vary from $250 to $600 per ton, according to one analysis, while experts have estimated that a price under $100 and closer to $50 could create a market…

One major challenge could be resistance to the construction of pipelines to transport carbon dioxide…

DB2

Back in the 70’s the Plant and Soil Science Department at the University of Rhode Island was experimenting with adding different amounts of CO2 into greenhouses to increase plant growth. From what I remember adding more CO2 into the “normal” air did increase the production of various food crops.

Recapturing CO2 and using it in this method could help with two issues at once, global warming and global food shortages.

OTFoolish

From what I remember adding more CO2 into the “normal” air did increase the production of various food crops.

Yes, it works both in greenhouses and globally. It is sometimes called aerial fertilization. It also increases water use efficiency because leaf pores don’t have to be as open.

Recapturing CO2 and using it in this method could help with two issues at once, global warming and global food shortages.

Greenhouse use of carbon dioxide just recycles it rather than reducing levels.

DB2

Norway’s future CO2 cemetery takes shape
https://phys.org/news/2022-09-norway-future-co2-cemetery.htm…
On the shores of an island off Norway’s North Sea coast, engineers are building a burial ground for unwanted greenhouse gas…It “is the world’s first open-access transport and storage infrastructure, allowing any emitter that has captured his CO2 emissions to deliver that CO2 for safe handling, transport and then permanent storage,” project manager Sverre Overa told AFP…

The government has financed 80 percent of the infrastructure, putting 1.7 billion euros ($1.7 billion) on the table as part of a wider state plan to develop the technology…Using CCS to curb carbon pollution is not a new idea, but despite generous subsidies the technology has never taken off, mainly because it is so costly…

A pipeline will inject the liquefied CO2 into geological pockets 2,600 metres below the ocean floor, and the idea is that it will remain there for good…Critics caution that CCS could prolong fossil fuel extraction just as the world is trying to turn toward clean and renewable energy. Greenpeace Norway’s Halvard Raavand said the campaign group had always opposed the practice.

DB2

Greenhouse use of carbon dioxide just recycles it rather than reducing levels.

The idea is to sequester the CO2 from the atmosphere into vegetation which is then consumed as food or even livestock feed. The overall effect would be to reduce the CO2 circulating freely in the atmosphere.

OTFoolish

Greenhouse use of carbon dioxide just recycles it rather than reducing levels.

The idea is to sequester the CO2 from the atmosphere into vegetation which is then consumed as food or even livestock feed. The overall effect would be to reduce the CO2 circulating freely in the atmosphere.

While true, because of the short lifespan of foodstuffs I think the overall effect would be minuscule (unless you’re growing trees and eating their fruits or nuts).

DB2

As a carbon based lifeform I find ingesting other carbon based life to be essential to surviving. Meats, fish, fruits, nuts, vegetables, etc., all incorporate carbon either directly from the air, CO2, or in the case of animals by eating something that already consumed carbon.

OTFoolish

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Our best carbon capture technology could be simply building with wood where ever practical. Libraries are also excellent at carbon capture.

Meanwhile plant trees to replace same. Encourage tree farming.