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Paper from researchers: https://www.nature.com/articles/s43247-022-00436-3 https://www.nature.com/articles/s43247-022-00436-3 "Using life-cycle assessment mode
by spenrose 4y ago
Paper from researchers: https://www.nature.com/articles/s43247-022-00436-3 https://www.nature.com/articles/s43247-022-00436-3
"Using life-cycle assessment modelling of potential supply chain impacts for twelve nations undertaking Enhanced Rock Weathering deployment to deliver up to net 2 Gt CO2 yr−1 CDR, we find that rock grinding rather than mining exerts the dominant influence on environmental impacts. This finding holds under both a business-as-usual and clean energy mix scenario to 2050 but transitioning to undertaking Enhanced Rock Weathering in the future with low carbon energy systems improves the sustainability of the Enhanced Rock Weathering supply chain. We find that Enhanced Rock Weathering is competitive with other large-scale Carbon Dioxide Removal strategies in terms of energy and water demands."
- MrDunham 4y agoI found these parts also interesting from that study: "...it is competitive in terms of sustainability. It has half the energy demand of DACS, avoids land-use competition of other land-based technologies (Bioenergy with Carbon Capture and Storage, afforestation/reforestation/biochar), and has a 10–100-fold lower water demand than these other CDR strategies."