Saw an article in MW newsletter and contacted the student...

Saw an article in MW newsletter and contacted the student author.The following is what took place in discussion;

'Whilst the emissions from the process of hydrogen pyrolysis itself may be significantly less than that of electrolysis, the processes involved such as the usage of natural gas produce most of their emissions not through direct combustion but through fugitive leakages, as shown in the picture below (this does not account for by-products such as NOx...)

https://onlinelibrary.wiley.com/doi/full/10.1002/ese3.956

This paper even found methane pyrolysis’ direct emissions to be greater than that of electrolysis, without accounting for external emissions of methane from what I can ascertain (I have only had a cursory glance at the paper but will read deeper shortly).

https://www.sciencedirect.com/science/article/pii/S0360319921010260?casa_token=AfFn27Cnjh0AAAAA:6Z37ZdHJuAnAwl_FQt0O9JLj0pEUDAIuLDyviGusyOghRwUeHqalSUH4YnXihW-bzaLa59jjCA

I imagine the image would be significantly worse if the by-products of natural gas extraction were considered, and when considering the emissions of the hydrogen end product as well, would most likely make it a significantly worse than is currently depicted. The addition of further processes to natural gas typically leads to higher than expected fugitive emissions so I am not overly hopeful.

Let me know your thoughts.

Cheers

Rosco'

My response was ;

'Thanks for your reply,Rosco.From my understanding the pyrolysis process was developed and patented by QU back in 2010 or thereabouts.Patent rights were bought by Eden Innovations in that year. As I've written,the carbon nanotubes are used to strengthen concrete so not as much is needed for a project.As concrete mixing and production contribute to GW, reduction in its use is regarded as a climate positive. Hydrogen is also used to reduce by 70% the amount of diesel used in diesel engines.Another climate 'positive'.It's regarded as a transition fuel to the ultimate use of pure hydrogen used to power engines directly-or to generate electricity which then drives an electric motor.

Sorry about the small print but you can check it all out online. My view is, and I have a small investment in Eden Innovations because of the reduction in carbon emissions, any significant reduction in CO2 resulting from use of these products i.e concrete and fuel,would aid in overall co2 emissions world-wide. I'm surprised that leakage of H2 appears to be a problem given the advanced technology we now have. I believe a system of containing H2 in an ammonia solution is being touted as a means of safe transfer from one place to another.

I feel, after a number of years where carbon dioxide and methane have been presented as the major culprits in global warming,adding H2 to the list will provoke some public scepticism and cynicism.Some method of either sealing H2 production units with 100% effectiveness or trapping leaked H2 in an ammonia solution will need to be found.

Keep up your good work.'

I'm putting this up for discussion and any comment as I want to send information to relevant Government ministers on the benefits of EDE products to helping Australia meet it's climate aims.I want to make the case as strong as I can.

db