Comparison of Carbon Dioxide Removal methods
Indicative characteristics of most important methods only.| Carbon Dioxide Removal approach: | Enhanced Olivine weathering | Biochar and similar methods | Carbon Capture and Storage |
|---|---|---|---|
| Impact on atmospheric CO2 level | As much as needed | Limited and only temporal removal of CO2 | Limited to CO2 storage capacities! |
| CO2 'footprint' | Small (3-4%) | Various, depends on technology | Large (~29%) |
| Security impact | No risks | High tech ? | Potential leakage of concentrated CO2 |
| Scalability | Unlimited, but firm logistics required | Limited | Very big investments |
| Development phase | Proven technology, immediate start possible | Under development partly operational | Operational in 2020? |
| Economy, cost of processing | € 12-20 / ton CO2 | Energy as by-product, costs ? | € 80-100 / ton CO2 |
| Contribution in sustainability strategy | Natural process and fossil fuels remain | Biomass is an alternative (green) “fuel” | Technological process and fossil fuels remain |
| Additional benefits | Certain applications | Certain applications | Absent |