Lowering the Cost of Biofuel Production

sciencehabit writes: 2014 was a banner year for making automotive fuel from nonfood crops, with a series of major new production plants opening in the United States. However, producing this so-called cellulosic ethanol remains considerably more expensive than gasoline. So researchers are always on the lookout for new ways to trim costs. Now they have a new lead: a microbe that can use abundant nitrogen gas as the fertilizer it needs to produce ethanol from plants. The discovery (abstract) is "a major commercial accomplishment for biofuel production," says microbiologist Steven Ricke.

Comments

Re:not in my tank!

[donaldm]

If we accept it's about cleaner air. And we assume that it burns X% cleaner. And we assume that we will burn X% more fuel over the same distance ... What have we gained? I have seen good arguments for using biodiesel but not ethanol.

I have a diesel car and I get excellent economy as well as producing less green house gas than an equivalent petrol engine. My car is able to take 5% bio-diesel (B5) as per manufacturers guidelines however in Sydney Australia I find it almost impossible to get B5 or any bio-diesel for that matter. Of course if I had a petrol car I can get 10% Ethanol (E10) which is normally cheaper (Government/Taxpayer subsidised) than diesel although because I get a better fuel economy the price evens out.

Actually even though many people will seen E10 as cheaper than diesel many are not aware (or don't care) that while a hike in petrol can be felt by the petrol consuming motorist a hike in the price of diesel is actually felt by everyone since all haulage in Australia and in the Americas is by trucks that normally have diesel engines. Even most fishing boats and smaller sea going craft use diesel mainly because it is economical and is a much safer fuel. As an example (don't do this at home) throw a lighted match into a can filled with petrol and you better have a decent fire extinguisher handy. Do the same with a can of diesel and it will most likely go out. Don't try this in an enclosed space since the resulting petrol fume explosion may be hazardous to your health.

It is possible and very economical to grow crops and even use animal fat for bio-diesel providing you have the land and Australia has the land which is not that much smaller tan the continental USA. However our government seems to prefer using ethanol in petrol possibly due to the lobbying of the sugar producers which I suppose could be likened to the corn lobbyists in the US.

I should point out that Australia has a fairly small population (approx 24 million) and a population density of approximately 3.2/square km compared to the USA which has a population density of 35/square km. It is even worse for smaller countries with larger population and even worse population density (see the following ).

The problem with growing crops for bio-fuel is that you need large areas of land and many countries with a large population density may should not attempt this or at least go for limited production. In the short term these countries may be ok but whether the long term growth and sustainability is feasible that remains to be seen.

It's all about corporate welfare.

I could not agree more.