And then, after one final reminder that the city will officially be worshipping fossil fuel next week, I got back home, with a loaf of bread for my lunch picked up in the city centre and a 20 kg sack of olivine ("greensand") which will eventually absorb about 20 kg of CO2 when I use it in the garden. I don't use any fossil fuels, but others unfortunately still do.
#velomobile #regel17 #cycling #biketooter #weathering #enhancedweathering #olivine #greensand

This beach really does have #green sand #hawaii #greensand #beaches #tropicalparadise

This morning's exercise ride was a 34 km round trip to collect another 20 kg sack of greensand. We've been using it with our potplants, mixed with compost from the garden to start tomatoes, and here in the front garden it's levelled up the ground above our potatoes.
Over time, each sack removes 20 kg of CO2 from the atmosphere and the process is beneficial to growing plants. Three sacks make a very small difference to our historical emissions, but if I'm going to buy soil of some kind for the garden it may as well be this. I certainly won't buy #peat which would help to destroy an ecosystem somewhere and release CO2 into the atmosphere.
#olivine #greensand #weathering #enhancedweathering #regel17 #

#Dänemark speichert #CO2 unter der #Nordsee

Der dänische Kronprinz Frederik gibt heute den Startschuss für die erste CO2-Einspeicherung unter der Nordsee. Warum das Projekt auch über die Landesgrenze hinweg interessant ist.
#Greensand #CO2Speicher
https://www.zdf.de/nachrichten/wirtschaft/daenemark-co2-einspeichern-meer-100.html

Photos of this morning's recreational ride. It took an hour and ten minutes to ride 37 km, my average speed being pulled down by riding slowly into a farmyard at around the half way point to buy another 20 kg sack of olivine.
We've been using this sand-like ground up olivine in pot plants indoors and also in the garden to fill gaps.
Plants seem to grow well in it.
Olivine is one of several minerals which absorb CO2 from the air as they weather so my feeling is that if I'm going to spend money on something to put in the garden or use for planting indoors, why not use olivine which has a small positive effect on the climate?
#regel17 #velomobile #greensand #olivine #weathering #enhancedweathering

#Dänemark hat #Wintershall heute eine Lizenz für das #CCS Projekt #Greensand erteilt. Das Projekt ist ein weiterer Baustein in den klimaschädlichen #Wasserstoff-Projekten des Konzerns:

#WintershallDEA will aus #Erdgas Wasserstoff herstellen und das dabei entstehende #CO2 unter der dänischen Nordsee verpressen. Doch der als "blau" und sauber vermarktete #Wasserstoff bleibt klimaschädlich.

Wir vom #UmweltinstitutMünchen fordern: Keine Fördergelder für blauen #H2!

https://umweltinstitut.org/energie-und-klima/mitmachaktionen/wasserstoff-nur-fair-und-erneuerbar/

@FransVeldman @henkdeligt @haayman Meestal waar, maar er zijn manieren om CO2 op te nemen die permanent zijn zonder kost van teveel energie. Bijvoorbeeld weathering van minerals.
Olivijn is een van de meest voorkomende minerals op aarde en vormt een groot deel van de aardkorst. Normaalijk reageert het langzaam met water en CO2 uit de lucht, waarbij het koolstof opslaat op een manier die veel energie kost om het vrij te maken. Als we het mineraal mijnen en vermalen, gaat dit proces veel sneller.
Het lijkt mogelijk om olivijn te mijnen en te vermalen op een manier waarbij minder CO2 vrijkomt dan het mineraal kan opnemen.
In Nederland is Olivine verkocht onder de naam greensand. Ik heb er een beetje van in mijn tuin.
Dit is natuurlijk geen oplossing voor eindeloze gebruik van fossiele brandstoffen - daar moeten een einde aan komen.
https://en.wikipedia.org/wiki/Olivine
https://en.wikipedia.org/wiki/Enhanced_weathering
#weathering #greensand #olivine #EnhancedWeathering

Anyway, I think #weathering of minerals is one of the few types of CO2 sequestration which might actually achieve something because the chemical reaction which locks up the CO2 is not easily reversible, and it appears that olivine can be mined and also transported with a much lower CO2 output than the product will absorb.

In the Netherlands, a company called #Greensand is selling olivine, including as a compensation product where they'll mine it and dispose of it for you without you having to have it delivered to your home:

https://greensand.com/

In my case I bought this small amount from a local company called #Onlyvine which stocks the product:

https://www.onlyvine.nl/

If you're going to use sand or grit for some purpose, it may as well be olivine which might also have a positive effect on our climate.

This is not a paid for endorsement, btw, I just think it's interesting and probably positive. Also of course this cannot substitute for reducing consumption of fossil fuels as that's the most powerful way to reduce emissions.

Covering 34 km in an hour and five minutes meant that today's round trip through the countryside set no records, but it was actually a shopping trip. On the return half of the journey I had a sack of 20 kg of #greensand (#olivine) behind the seat of my #velomobile (#regel17)