vonwolfhausen

4 ms·

1. 1.▲
   by vonwolfhausen 3y ago

   I've been enjoying this thread. I have a company that does this (Eion). We are recruiting for a data engineer role to implement the algorithms for quantifying carbon removal, if these questions are interesting to you. Touches on nearly
2. 2.▲
   by vonwolfhausen 3y ago

   Can be <5 years if it is super fine (~25um) or >20 years if it is coarse (minus 3/8" fines).
3. 3.▲
   by vonwolfhausen 3y ago

   Dust is never good, but olivine specifically was introduced as a foundry sand specifically because it doesn't cause silicosis (vs quartz).
4. 4.▲
   by vonwolfhausen 3y ago

   Indeed, the largest active olivine quarry is in Norway, it's all hydro!
5. 5.▲
   by vonwolfhausen 3y ago

   It depends on the feedstock, and how far you truck it (last mile) but in general this is one of the most bang-for-the-buck CDR approaches, with yields of 5-10x CO2 removed vs CO2 required.
6. 6.▲
   by vonwolfhausen 3y ago

   Olivine comes from Norway, which uses hydro power. The energy in extracting and crushing is around 4kg CO2/ton. Pulverizing is around 30-50kgCO2/ton rock. Majority of transport is on water (ocean, river), which is low emissions. I