What Is "Biomining"?

Definitions, mechanisms, and where biotech rivals chemistry

Our Definition

"Biomining" is often shorthand for "microbes in heaps." That definition is too narrow. For this handbook, biomining means:

Any biological mechanisms—cells, enzymes, proteins, plants, metabolites, or consortia—used to aid metal recovery, mineral processing, or the management of mining-related wastes and liabilities. This includes cell-free proteins and separation modules as well as whole-cell systems.

The Bottom Line

Biomining is not a replacement for mines. It's a toolkit of modules that can plug into existing flowsheets where:

  • Complexity makes conventional chemistry expensive, blunt, or risky
  • Selectivity, adaptation, or operation under milder conditions offer strategic advantages
  • Environmental outcomes (closure, water quality, social licence) add value beyond metal recovery

These modules are judged on the same metrics as any other process: $/tonne, % recovery, impurity removal, risk, permitting footprint, and closure outcomes.

Mechanisms & Competitive Edge