Methane is easily obtainable from bioreactors in fact you can buy blow up versions now. If you have excess energy then run the methane through a CVD to produce graphene which you can turn into carbon nanotubes. Now you have a medium to store energy on...graphene/carbon nanotube super cap. All can be set up remotely.
very Best
Greg
Hi,
Converting graphene into CNTs is not an efficient process (there are some academic publications where people "zip up" graphene sheets to make CNTs, but compared to simply growing CNTs using CVD methods it's inefficient)
This company is developing plasma technology to convert waste methane from biomass into graphene:
https://cambridgenanosystems.com/about-us/
They claim the process is 'green' but there's no lifecycle analysis report and plasma generation takes significant energy, so we'll all have to wait and see if the numbers really work for them.
Carbon capture by O2 scrubber yields carbon nanotubes https://phys.org/news/2016-06-power-co2-emissions-carbon-nanotubes.html
Biomass to methane Article Conversion of biomass into methane gas
Methane to graphene
https://arxiv.org/ftp/arxiv/papers/1203/1203.0816.pdf
biogas system https://www.facebook.com/stateofthecarte/videos/942294805949719/
Hi Greg,
Biomass to methane - yes, fine.
Methane to graphene ( https://arxiv.org/ftp/arxiv/papers/1203/1203.0816.pdf)
I've actually read that paper before - there's no measure of the efficiency of the process (how much methane is consumed vs how much passes straight through the system) or how much energy is used for the plasma-enhanced CVD process (and therefore how much CO2 is generated in making the power to convert the small amount of methane to graphene) I think you'd end up with a greater amount of greenhouse gases at the end of your graphene process than you started with, so no net environmental benefit and only a tiny amount of graphene. That paper was much more concerned with making good _quality_ graphene than efficient synthesis.
Your final web link is to a homemade biogas generator - fine :-)
My understanding is that we have a source of energy (wind mill) in a remote location and we need carbon sequester and to store energy... If you are in a remote location the people living there and their waste will give you methane..the rest of the pieces all fit IMHO. negative carbon footprint
...Bobs your uncle
Fiona, I am a DIY kind of guy and huge fan of open source and Robert Murray Smith of youtube fame...not everything comes off the shelf you got to build it.
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