Lessons In Chemistry — Microbes, Heavy Metals, And Water
cleantechnica.com Oct 20, 2026

Lessons In Chemistry — Microbes, Heavy Metals, And Water

AI-summarised brief · reviewed before publication

The Carlota copper mine in Arizona is experimenting with bio‑leaching, using acid‑tolerant microbes from Denver startup Endolith to extract copper more efficiently from low‑grade ore. The method mixes microbes with sulfuric acid, spraying the solution over rock piles to dissolve iron and sulfur, freeing copper. The mine currently yields only a third of its former output, and improved yields are critical to avoid closure by the decade’s end. The article also notes rising temperatures in Longyearbyen, Norway, melting permafrost and contaminating its drinking water with pyrite‑derived iron and sulfur.

💡 Why It Matters

  • · The microbe‑assisted technique could reduce chemical use and extend the life of marginal copper deposits, a vital resource for renewable energy infrastructure.
  • · In Longyearbyen, the rapid thaw threatens freshwater supplies, underscoring climate‑induced water security risks in the Arctic.