View original ↗on Carbon Herald
deal · 13 January 2025
Frontier ↔ Mati Carbon
Frontier: a firm purchase of 420 t of enhanced rock weathering (agricultural) removal from Mati Carbon.
BuyerFrontier
SupplierMati Carbon
Tonnes420 t
Capture pathwayEnhanced rock weathering (agricultural)
Storage mediumocean-dissolved
Commitment typefirm
Deal structureofftake
Source pathway descriptionEnhanced rock weathering (ERW), spreading finely crushed basalt rock dust on agricultural fields, prioritizing smallholder rice paddies. The basalt dust, acquired as a byproduct from aggregate mines, reacts with soil CO2 and carbonic acid, forming bicarbonate ions that ultimately find their way to oceans or deep aquifers.
Storage descriptionPermanent carbon storage for over 10,000 years via bicarbonate ions in oceans or deep aquifers
Project locationIndia, Zambia, Tanzania
NotesThis is the second delivery from Mati Carbon to Frontier; the first delivery of 50 tons occurred in January 2024. The article describes this 420-ton delivery as 'the largest permanent CDR delivery performed by a company from the global south.'
Durability defaultedtrue
Previous durabilitydurable-1000y
Previous durability basispathway-default
Durability notePathway default removed; duration requires source evidence
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