We published a peer-reviewed paper in Applied Geochemistry 🎉
A first for enhanced weathering field experiments: we weathered returned concrete (carbonate minerals) in an arable field; most trials have weathered basalt (silicate rock).
This paper is important because:
1️⃣ It measured the product of the carbon dioxide removal (CDR) weathering step: bicarbonate. Most studies and companies look at soils to measure weathering, then infer CDR from the dissolution data. Unfortunately, weathering may ≠ CDR; it all depends on the acid dissolving the material. (Carbonic acid for the win 💘.)
2️⃣ It assessed the CDR potential of carbonate minerals as opposed to silicate minerals, like olivine (the fraction of basalt that weathers to form bicarbonate).
3️⃣ It demonstrated economically-viable rates of CDR (0.55tCO2/hectare/year) based on water measurements (direct assessment of CDR), which have not been seen in much of the silicate enhanced weathering literature. (To see a comprehensive list of enhanced weathering field studies, check out the literature section at the bottom of our science page.)
📖 https://lnkd.in/eDSHFFCF
#enhancedweathering #carbondioxideremoval #geochemistry #science
Founder @ Silicate | Breakthrough Energy Innovator Fellow
2moWooohoo 🥳 thank you, Dogpatch Labs. Big team effort 🏆