Cajou Biochar Attinguié — Valency × Revata, Powered by Varaha

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Summary

The project converts de-oiled cashew shell cake (DOC), a residue generated as a by-product of cashew nut shell liquid extraction, into stable biochar at a facility in Attinguié, near Abidjan, Côte d’Ivoire. Although DOC has an established use as boiler fuel, the market for its uptake remains underdeveloped, with limited and inconsistent demand from boiler operators. As a result, the facility faces challenges in securing reliable and consistent off-takers for the DOC generated, making DOC difficult to manage and dispose of. By converting DOC into biochar, the project provides an alternative reliable pathway for managing the residue while storing the carbon contained in the biomass in a durable form, with a modelled carbon storage period exceeding 200 years.

How carbon is being removed

Biomass Carbon Removal and Storage (BiCRS) involves storing the carbon contained in waste biomass—organic material from living or recently living organisms. BiCRS works by halting or slowing the decomposition of biomass, enabling the carbon it contains to be stored long-term. This can be achieved by converting biomass into materials that decompose more slowly—such as biochar or bio-oil—or by storing it in environments where decomposition is slowed. For BiCRS to count as carbon removal, the biomass must be replenished to ensure additional carbon dioxide is drawn from the atmosphere.

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Project timeline

Completed 2026

Initial documentation submission

Completed 2026

Audit kick-off

Expected 2026

In progressSite visit

Isometric’s qualified VVB conducts a site visit, comparing the project facility against the documentation provided. The required cadence for site visits is defined in the Isometric Standard.

Expected 2026

Approval date

Expected 2026

Initial credit issuance

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Cajou Biochar Attinguié — Valency × Revata, Powered by Varaha

Revāta Carbon
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Project details

Protocol details

Summary

Certificates

Protocol details

Summary

How carbon is being removed

Project timeline

Project documentation