Frispark: Steinstøv av Basalt binder CO2: - Stort potensial i landbruket

Steinstøv av basalt binder CO2 ... og kan brukes i landbruket med utstyr som allerede finnes:

Dette er konklusjonen fra et arbeid publisert i "Nature" 8. juli 2020.

Siden er dette bekreftet i flere pågående undersøkelser:

"Spreading rock dust on fields could remove vast amounts of CO2 from air"

"The rock dust approach, called enhanced rock weathering (ERW), has several advantages, the researchers say. First, many farmers already add limestone dust to soils to reduce acidification, and adding other rock dust improves fertility and crop yields, meaning application could be routine and desirable. (The Guardian 8. juli 2020)

"Enhanced Weathering: crushed rocks spread on farmland can capture billions of tons of CO2/year"

"Enhanced Weathering is a carbon capture process that could remove over 2bn tons of CO₂each year (for comparison, the U.S. emitted 5.3bn in 2018), explains Benjamin Houlton at the University of California. Silicate minerals exposed to the weather have been sequestering atmospheric carbon and turning it into rock since the dawn of time, but it’s a process that normally takes thousands of years. This period can be cut to two years by grinding silicate rocks into a fine powder, thus increasing its surface area and its contact with CO₂."

(Energypost.eu 21. juli 2020)

"Potential for large-scale CO2 removal via enhanced rock weathering with croplands"

"Enhanced silicate rock weathering (ERW), deployable with croplands, has potential use for atmospheric carbon dioxide (CO2) removal (CDR), which is now necessary to mitigate anthropogenic climate change1. ERW also has possible co-benefits for improved food and soil security, and reduced ocean acidification."

(Nature 8. juli 2021)

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Det er sjelden man kommer over en teknologi som har så lav terskel for å tas i bruk i landbruket.

Her må fagkreftene følge med ... slik at potensialet kan tas ut også i Norge.

Skudeneshavn 15. september 2021

Jan Marton Jensen

På Twitter:

15. september 2021

https://twitter.com/janmarton/status/1438240610335531012

Kilde:

https://snl.no/basalt

https://www.startsiden.no/sok/?q=basalt%20co2%20sequestration