Methods for carbon dioxide removalAlkalisation of oceans and rivers
About the method
Our waters act as huge CO₂ reservoirs. Around a third of man-made emissions are absorbed by the oceans. Adding alkaline minerals to oceans or rivers increases the alkalinity of the water, thus lowering the pH value. This enables bodies of water to absorb more CO₂ and store it in the long term.
Properties
- Location
- Ocean
- Sequestration mechanism
- Geochemical
- Carbon storage pool
- Minerals
Qualitative comparison
- Duration of storage
- high
- Potential
- medium-high
- Technology readiness
- low
- Cost efficiency
- medium-high
- Co-benefits
- low-medium
