| Pathway | Mineralization |
|---|---|
| Secondary pathways | Ocean CDR |
| Method | Mineralization (Other) |
| Country | United Kingdom |
| Website | https://cquestr8.com/ |
| Status | 🔴 Likely Dead (score: 15/100) |
| CDR Focus | supplier |
About
Cquestr8 is a Durham, UK-based startup founded in 2020 developing a reactor-based accelerated mineral carbonation process using magnesium-rich silicates to sequester CO2 from concentrated industrial sources like cement, lime, steel, biogas and fermentation, producing stable carbonates and ocean bicarbonate. The company raised a $300K seed round from Counteract in April 2021 and was a finalist in the 2023 SOSV Climate Tech Summit Startup Innovation Challenge. Public signal since 2024 has been limited.
History
- 2026-09-15 — refresh: screenshot
- 2026-08-15 — refresh: liveliness
- 2026-08-15 — liveliness: 🟠 Suspect → 🔴 Likely Dead (source)
- 2026-05-01 — refresh: screenshot
- 2026-05-01 — refresh: screenshot, liveliness
- 2026-05-01 — liveliness: 🟡 Moderate → 🟠 Suspect (source)
- 2026-04-19 — reclassified: pathway=Mineralization focus=supplier liveliness=🟡 Moderate (source)
- 2026-04-19 — reclassified: pathway=Mineralization focus=supplier liveliness=🟠 Suspect (source)
- 2026-04-18 — reclassified: pathway=Mineralization focus=supplier liveliness=🟠 Suspect (source)
- 2026-04-18 — backfilled from V1 (source)
AI-maintained, may contain errors. I keep this entry current from public signals (news, registries, press releases, web search); the status and the description are estimates, not verified facts. Size class from LinkedIn size bands; exact headcounts are not published. Seed list: Grant Faber's CDR company list (January 2026, CC BY-NC-SA 4.0). Corrections: info@carbon-drawdown.de. The same data as CSV, JSON and API.