Welcome to the Energy Blog


  • The Energy Blog is where all topics relating to The Energy Revolution are presented. Increasingly, expensive oil, coal and global warming are causing an energy revolution by requiring fossil fuels to be supplemented by alternative energy sources and by requiring changes in lifestyle. Please contact me with your comments and questions. Further Information about me can be found HERE.

    Jim


  • SUBSCRIBE TO THE ENERGY BLOG BY EMAIL

After Gutenberg

Clean Break

The Oil Drum

Statistics

Blog powered by Typepad

« EEStor, Lockheed Martin to Collaborate on Military and Homeland Security Applications | Main | FYI: Silicon Nonowires Convert Waste Heat to Electricity »

January 16, 2008

TrackBack

TrackBack URL for this entry:
http://www.typepad.com/services/trackback/6a00d83451b5da69e200e54ff689d08834

Listed below are links to weblogs that reference GM Invests in Coskata, Who Claims it Can Produce Ethanol for $1.00/gallon:

Comments

Paul F. Dietz

Or they could make methanol from the syngas (and possibly gasoline from the methanol using Shell's well proven zeolite technology.)

Grass Man

The real revolution will come if they can simplify and shrink that down to the size of a washing machine that I can put in my garage and dump grass clippings and kitchen waste into, then we're talking about really living off the grid.

bigTom

If this stuff is real it should spell the end of corn based ethanol.

Of course issues like waste products, and soil depletion need to be resolved. Hopefully the waste products can be put back onto the fields recycling nutrients and trace minerals.

Roger Brown

In my mind one of the big questions about the economics of this process is the performance of the gasifier. Biomass gasification has been proposed for a number of application but has proven to have high capital costs relative to alternatives. Also it has proven difficult to make the gasification yields feedstock independent.

Cyril R.

Roger is correct, it's not easy to gasify some biomass types, and gasifiers are expensive. High capital costs make fast adoption problematic; it comes as no surprise that the projected scale-up is slow. A drop in the bucket by 2011. That means this technology will likely be competing with cellulosic. It'll be interesting to see which one proves to be better.

A biofuel processing plant technology (and in fact, any energy technology) with very low capital costs could make a big difference I think.

What bothered me was that there is no mention of the exact yield (output/input*100%). Right here it says that it has the highest conversion rates of feedstock to ethanol in the industry. Compared to what? Corn ethanol? That's not too difficult is it now!? If it's better than cellulosic then that would be a real accomplishment. Yield is crucial as there will be a limited amount of biomass available we'd want to get the most out of it as possible.

The Coskata website mentions 100 gallons per dry ton carbonaceous. That sounds a lot better than conventional corn ethanol, perhaps similar to future cellulosic yields. But then, how many MJ's are in a "dry ton carbonaceous"? Where are the numbers?

Cyril R.

Or they could make methanol from the syngas (and possibly gasoline from the methanol using Shell's well proven zeolite technology.)

Paul Dietz, would that yield more than Coskata's process?

Paul F. Dietz

Paul Dietz, would that yield more than Coskata's process?

I don't know, but would not be surprised if it did. The waste heat also would come out at a higher temperature, which would make it more valuable. More practically, it would involve off the shelf, proven technology, so the risk would be lower.

Cyril R.

That's true. This source gives some figures:

Advantages of the process
• The synthetic gasoline is free of sulphur and nitrogen.
• The overall energy efficiency of the MTG process including processing energy is high, about 92-93%. The energy balance is extremely favourable, 95% of the thermal energy of the methanol feed is preserved in the hydrocarbon product. The remaining 5% is liberating as heat of reaction. However, if one includes the thermal efficiency for the methanol synthesis process from natural gas (~60%), then the overall energy efficiency (natural gas to gasoline) is about 50-60%.
• The product meets or exceeds existing gasoline specifications.
• Methanol conversion is virtually complete. Gasoline yield high.

It appears NG to methanol has a rather low yield. Biomass to methanol would probably be more like 70-80%. The Hynol process claims higher than 85% with a much lower cost target per gallon of methanol than Coskata's for a gallon of ethanol. I'm not sure how much the zeolite process would add to the cost though. Considering methanol's high octane number, it would be more efficient to use the methanol itself as a fuel. Right now making gasoline is probably best.

Possibly >80% yield of HHV? I did not think such high conversion yields would be possible, especially with gasoline as the end product and using off the shelf equipment. It looks like you may be right Paul.

Cyril R.

OK, so ethanol contains about 89 MJ per gallon. Coskata's 100 gallon per ton (I'll take it that's a metric) means they get about 9 GJ per metric ton of dry biomass.

The problem is the biomass. Typical dry biomass energy content would be 10-20 GJ per metric ton, which means Coskata's yield would be between 45% and 90%. That's not very informative and if they're using non-metric tons... Sigh.

PatCawley

Why isn't this process being developed for producing butanol instead of ethanol? Butanol has been proven to be easier to handle (non-corrosive), and to have a BTU/gallon rating very close to gasoline.

PatCawley

Why isn't this process being developed for producing butanol instead of ethanol? Butanol has been proven to be easier to handle (non-corrosive), and to have a BTU/gallon rating very close to gasoline.

sildenafil citrate

Today I was randomly looking over my Amazon profile, and found a list I made of products that help build fine-motor skills in babies, toddlers, and children. I wrote it in 2007 when Jake was 5 and in still in Occupational Therapy - we were really focusing at the time on his fine motor skills. I owe a lot of what I know about such things to our lovely O.T. Rachael, and to many of the books I have listed to the right.

I think a lot of people would be surprised how easy it is to start including fine-motor activities in playtime . . . especially since so many really fun things help to build those skills! Many of you are probably already doing some of these activities with your children and not realizing how great they are for development.

CNA Practice Test

Yes... it seems that the media is very biased to their own way of thinking and hasn't improved since you wrote this article.

certified nursing assistant

I have to add here in this blog that I love playing piano, is some of the things for which I die and I dedicate my life, my piano teacher has nearly 30 years in the management of this instrument, thank you for this contribution and here you leave my comment ...

cna license

I THINK THIS IS A GOOD ROUTINE.....IT WILL REALLY WORK FOR ME......WHERE DID YOU GET THE PHOTO OF THIS PAGE....IT SEEMS TO BE AN ORIGINAL PAGE........

Silver Belly Button Rings

Lovely Post !! I am happy to read such a fantastic post The most interesting part of this blog is that "The precept of Order requiring that every part of my business should have its allotted time"

vardenafil

Good decision from GM they can earn huge profit.

vickyyouvi

that's really a fantastic post ! added to my favourite blogs list.. I have been reading your blog last couple of weeks and enjoy every bit. Thanks.
http://www.njroyallimo.com/

vickyyouvi

oradell limo service
Very usefull roadtrip tips… I have made some of the same mistakes they describe in the article and would have appreciated this article before I went off on my trip.

employee termination letter

Awesome! Some really helpful information in there. Bookmarked. Excellent source.

legal forms

That’s good explanation, thanks for the lesson very much.

newark limo

its very besutiful post !i added to my favorite blogs list.. I read your blog last weeks and enjoy every much Thanks.

CNA Nurse

GM's investments always turn out to be shit.

CNA Duties

The blog is absolutely fantastic! Lots of great information and inspiration, both of which we all need!

CNA Practice Test

Great post! I would also recommend the book E-myth, every entrepreneur should give it a read.

CNA Resume Cover letter

All these are my own opinion.I think your article is really a good topic,it may case people to think more about our society,it's good.I was agree with your opinion,I hope you can keep on your work.I will visit you frequently.

CNA Cover Letter Examples

I have been reading your posts during my afternoon break, and I must admit the whole article has been very useful and very well written. I thought I would let you know that for some reason this blog does not display well in Internet Explorer 8. I wish Microsoft would stop changing their software. I have a question for you. Do you mind exchanging blog roll links? That would be really cool!

 CNA Job Description

It really is nice to definitely dig up a web site where the blogger is clever. Thanks for creating your site.

 Seo Services Company Jaipur

Nice article.....I really impressed while reading your post.....Thank you so much , it will useful to every one....

Aarchtours

Well nice post thank for being post it with all nice details by it seems that in the future would be seen other most posts

by you made. i was just thinkig to make it forward to another as just like to promote hope you would like to happen this

by me.


thanks
regards,
Aarchtours

I am owner of this site : http://www.aarchtours.com/

ambien

I think is good choice

Kerala tours

Good choice for more profit.nice post

SEO Services

How great, $1/gallon is good, right? I know that I would like that to be the cost of gas at the pump!

Air Purifier

Good stuff, is there partnership still going well?

dentist west hollywood

I am unfamiliar with Coskata, but they sound like a pretty good company with good research going on.

Filipino Car Lease Broker Los Angeles

Is this commercial plant up and running yet??

parking sensor system

Smart of GM to get in on this, it could be a goldmine for them.

The comments to this entry are closed.

. .




Batteries/Hybrid Vehicles