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USC researchers outline their proposed carbon cycle

Unread postPosted: Fri 08 Jul 2011, 22:06:44
by Graeme
USC researchers outline their proposed anthropogenic chemical carbon cycle; the “Methanol Economy”

In a Perspective published in the Journal of the American Chemical Society, researchers from the Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California describe their work on developing the feasible anthropogenic recycling of carbon dioxide.

Under their scheme, carbon dioxide is captured by absorption technologies from any natural or industrial source, from human activities, or even from the air itself. It can then be converted by feasible chemical transformations into fuels such as methanol, dimethyl ether, and varied products including synthetic hydrocarbons and even proteins for animal feed, thus supplementing the food chain. This broad concept the basis of what they call the Methanol Economy.

The required energy for the synthetic carbon cycle can come from any alternative energy source such as solar, wind, geothermal, and even nuclear energy. The anthropogenic carbon dioxide cycle offers a way of assuring a sustainable future for humankind when fossil fuels become scarce, they propose.


Mack to begin production of DME-powered vehicles in 2015

Unread postPosted: Fri 21 Jun 2013, 08:42:53
by TheAntiDoomer ... 30621.html

Mack Trucks, part of the Volvo Group, will begin production of dimethyl ether (DME)-powered MACK Pinnacle Axle Back models in 2015. Volvo Trucks had announced earlier this month that it would commercialize dimethyl ether (DME)-powered heavy-duty commercial vehicles in North America, with limited production beginning in 2015. (Earlier post.)

The Pinnacle Axle Back model powered by DME will be equipped with a MACK MP8 engine, offering a 13-liter engine. The Pinnacle Axle Back model is suited for highway van trailer applications, bulk hauling, flatbed and dump trailer jobs.

DME offers diesel-quality performance with a high cetane number and low auto-ignition temperature, but burns cleanly without producing any soot. DME can be made from North America’s plentiful domestic natural gas supply, food waste, animal waste, grass clippings and other sustainable sources. DME can provide up to a 95% CO2 reduction compared with diesel when produced from biomass or biogas

Re: Mack to begin production of DME-powered vehicles in 2015

Unread postPosted: Fri 21 Jun 2013, 12:19:00
by seahorse3
Help me understand DME vs NG. Can these new trucks run off the new NG stations being built by Pickens company CLNE?

Re: Mack to begin production of DME-powered vehicles in 2015

Unread postPosted: Fri 21 Jun 2013, 23:58:00
by rollin
Ethers are notoriously flammable. With a flash point of -41C they can keep it.

Re: Dimethyl ether - fuel of the future?

Unread postPosted: Sat 19 Dec 2020, 09:41:09
by Tanada
Starvid wrote:Dimetyl ether seem to be a good alternative fuel. It is cheap, costing € 0.49 -0.55 per litre of diesel equivlalent, its potential is huge since it can made from biofuels from the forest and with a CO2 emission less than a tenth of that of diesel. I especially want to point out the potential, which in Sweden is something like 100-150 TWh per year (we use about 140 TWh of oil every year). Compare the size of Swedens forests with those of Russia and Canada. It seems the US might get it's future fuel from Canada, but not from its tar sands. :)

Maybe forests will be called "The Green Gold"?

Yes I revived the ancient DME thread because it was all that came up in my archive search and Indonesia as reported in the Coal Gasification thread has now committed to production in a big way.

Indonesia on a federal government level has decided that producing DME from domestic coal and blending or substituting it into the national supply chain as a drop in replacement for Liquified Petroleum Gas, LPG, will be a big financial benefit by offsetting imports.

Basically it sounds a lot like the South African SASOL plant that uses domestic coal to make synthetic Deisel to replace expensive imports. Ultimately if we peak soon Indonesia will have a head start on synthetic fuel while at the same time supporting domestic energy production keeping funds currently used for imports in the domestic economy instead. If anyone has a more recent DME thread give me a shout and a link to it.