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Breakthrough in Biodiesel Production

MGR writes "National Geographic is reporting that Japanese scientists have discovered a way to convert vegetable oil into biodiesel with a much less expensive catalyst (between 10 and 50 times cheaper) than what is currently used. From the article: 'Any vegetable oil can become fuel, but not until its fatty acids are converted to chemical compounds known as esters. Currently the acids used to convert the fatty acids are prohibitively expensive. Michikazu Hara, of the Tokyo Institute of Technology in Yokohama, Japan, and his colleagues have used common, inexpensive sugars to form a recyclable solid acid that does the job on the cheap.'"

41 of 406 comments (clear)

  1. Finally! by Anonymous Coward · · Score: 4, Insightful

    I hope we can finally dump our dependence on foreign oil. If this sort of thing really comes through, the Saudis are going to be PISSED.

    1. Re:Finally! by DrSkwid · · Score: 3, Informative

      and using the desert as one big hydroponics setup would help global warming.

      Don't only a huge carbon sink but also all that nasty water vapour from the ice caps melting and the sea levels rising would be a huge water sink also.

      Australia could join in too.

      --
      There are places where the networks are not touching,and there are places where they are-Boeing's Lori Gunter
    2. Re:Finally! by _KiTA_ · · Score: 3, Interesting

      Not really. The Saudis are more aware than most that their oil domination is rapidly going to run out. They even have a saying on the matter. "My father rode a camel. I ride a car. My son flies a jet. His son will ride a camel."

      No, what I would expect more than anything is the Saudis to invest heavily in BioD and other alternative energies once they see a winner and corner that market as it emerges.

    3. Re:Finally! by Obyron · · Score: 3, Insightful

      Everyone's always for helping the poor African citizens on principle, but they forget the African political climate. What money is netted from this is going to go to the Mobutu Sese-Seko, Charles Taylor, Robert Mugabe, King Mswati, Idi Amin, Omar al'Bashir, Sani Abacha, and Gaddafis of the world. Prosperity in Africa won't come about simply by giving them a new commodity they can use to make their dictators rich.

      --
      --Obyron
    4. Re:Finally! by llefler · · Score: 3, Insightful

      The way I understand it, nuclear power and electric cars are the solution.

      Nuclear power and electric cars are a solution, probably not the solution.

      It actually seems quite close, aside from the infrastructure.

      Infrustructure is a HUGE problem. How do you get electricity or hydrogen to where you need it? For the US anyway, you're talking about reworking the entire electrical grid. And we still don't have an acceptable way to dispose of the nuclear waste. I'm a proponent of both nuclear and hydrogen power. But we need to be realistic.

      With biofuels you can use current infrastructure. And current vehicles can use it with little or no modifications. Probably the reason there is so much interest in biodiesel is that with a cost effective solution there, you could convert every train and semi in America. Go for the least disruptive method that targets a very large market. From there you can look at either diesel cars or ethanol as the next step.

      That's not to say you can't use more than one solution, but I don't see electric/hydrogen cars being popular outside of larger cities any time soon.

      --
      It is amazing what you can accomplish if you do not care who gets the credit. -- Harry Truman
  2. key word is catalyst by ChrisGilliard · · Score: 5, Insightful

    with a much less expensive catalyst (between 10 and 50 times cheaper) than what is currently used.

    Note: the catalyst is 10 - 50 times cheaper, not biodisel fuel itself, while the breakthrough is meaningful, the headline is misleading. I'd be curious to know what percentage of the total cost of producing biodisel is related to the cost of this catalyst.

    --
    No Sigs!
    1. Re:key word is catalyst by bogaboga · · Score: 4, Insightful

      Still, this is an important development. If it is true and workable, most 3rd world countries will be able to "grow" a very essential component of fuel. Right now, there is no way these countries can avoid paying their hard earned dollars to the oil companies of the world, most of which are from the west.

    2. Re:key word is catalyst by TheGavster · · Score: 4, Insightful

      It should also give the third world a new market for their agricultural products; while we may make it a pain for people to sell us food, it's easy as pie to sell fuel over the border.

      --
      "Because Science" is one step from "Because old book". Try "Because of my experiment testing my falsifiable assertion".
    3. Re:key word is catalyst by j-cloth · · Score: 5, Insightful

      Not just the 3rd world -- farmers in general. I ran screaming from the prairies because there are no jobs and no money there. More markets for farmers are a Good Thing.

    4. Re:key word is catalyst by foniksonik · · Score: 4, Informative

      Dude, that's from 2001. It's been 4 years and improvements have been made. Plus he's talking about corn, not rape seed (Canola) or mustard seed or soybeans or cotton seed where the yields are much better for biodiesel than for ethanol (which isn't what this is talking about anyways).

      Repeat after me: "Ethanol is not biodiesel" "Ethanol is not biodiesel" "Ethanol is not biodiesel"

      This post is pure FUD and the guys study was probably financed by entrenched petroleum industry advocates anyways....

      --
      A fool throws a stone into a well and a thousand sages can not remove it.
    5. Re:key word is catalyst by Tracy+Reed · · Score: 5, Insightful

      Biodiesal *IS* solar power. Where do you think the energy present in the plant matter comes from? Not only that but it is probably more efficient on a $/watt basis. I'm all for photovoltaics and stuff but electricity storage for vehicles is still a tricky problem whereas chemical storage of energy has worked great for many decades now.

    6. Re:key word is catalyst by syukton · · Score: 4, Informative

      I hate to burst your bubble, but most crop plants achieve only 1 to 2 percent efficiency, with sugarcane being an exception at 8%.
      Source: http://www.life.uiuc.edu/govindjee/whatisit.htm

      Scientific-grade solar cells are about 15% to 20% efficient with some going as high as 24%
      Source: http://www.udel.edu/PR/UDaily/2006/nov/solar110205 .html

      Solar Stirling engines achieve nearly 30% efficiency at an installation at Sandia National Laboratories.
      Source: http://www.sandia.gov/news-center/news-releases/20 04/renew-energy-batt/Stirling.html

      So I'm sorry to say that plants SUCK at converting sunlight into energy we can use. As the first link states, the initial reaction in photosynthesis is nearly 100% efficient, but as biological processes consume that energy, the total efficiency for the system drops significantly. Work is being done to attempt to make "biological solar cells" which use the initial reaction in photosynthesis as their method of light harvesting, but to date nothing has been produced.

      Electricity storage for vehicles is a bit of a problem, unfortunately. I haven't got any links declaring that one solved. ;)

      --
      Reinvent the wheel only at either a lower cost, greater effectiveness, or your own personal enrichment and satisfaction.
    7. Re:key word is catalyst by chronicon · · Score: 3, Insightful
      Oil companies will resist biodiesel the way MS resists the GPL. Just watch. :)

      Interestingly enough, there is some indication that the oil companies actually share our concerns over energy needs more than we think. It may not entirely be about money to them, they want to stay in business don't they? For instance from Chervon:

      Energy will be one of the defining issues of this century. One thing is clear: the era of easy oil is over. What we do next will determine how well we meet the energy needs of the entire world in this century and beyond...

      The cynic would probably think that this is just a scam or excuse to raise oil prices and increase profitability. I think that is shortsighted. The ramifications are too great to ignore, even the greediest among us would not like to face the economic and societal ramifications that would follow sustained oil shortages. What good is money if you can't spend it?

      On second thought, maybe I should hope that is exactly what they are trying to pull! It beats the bleak outlook sustained shortages would lead to any day...

    8. Re:key word is catalyst by brontus3927 · · Score: 4, Informative
      In the 2 stage reaction, which is the only time an acid is used as a catalyst for biodiesel, the ingredients are as follows per liter of vegetable oil:

      200 ml methanol. I'm currently paying $2.50/gallon for methanol. Which puts my cost per gallon of biodiesel at about $.50

      1 ml Sulfuric Acid. I'm currently getting this for a little over $1/oz Technically that's expensive, but so little is needed that it works out to only $.15/gallon biodD.

      31-37g Sodium Hydroxide (depending on pH of oil) Lye is what's expensive. Hopefully, this is the catalyst the Nature article is replacing. Every so often a good price on lye will show up, but it is usually between $.20-$1/gallon biodiesel. If this article talks about replacing the lye, I'll definately try it.

  3. Lye = expensive? by drkfce · · Score: 4, Insightful

    Even though it is a good idea to reduce costs whenever possible, but from what I have seen, even when using lye (which is basic, not acidic), it is about 70 cents cheaper than regular fuel. Biodiesel = Used vegtable oil + lye + methanol + mixture motor, containers and filters.

  4. Biodiesel more at the pump? by Darlantan · · Score: 5, Interesting

    Err, this seems backwards to me. Everytime I've seen bio available, it's been below standard diesel prices. Perhaps it's just a regional thing where I'm at, but I've been under the impression that the real problem with biodiesel was A) older fuel lines may be degraded more quickly by biodiesel, and B) producing enough to fuel the world's fuel needs was a big issue.

    Of course, I'm no biodiesel guru, but it is of some interest to me -- I drive an older diesel (which I plan on converting to run on SVO, as soon as I get the facilities to make this feasible.)

    --
    Fill in your four or five-letter word of wisdom here _ _ _ _ _.
    1. Re:Biodiesel more at the pump? by Mr.+Slippery · · Score: 5, Informative
      Technically biodiesel is a blend of tradtional diesel and vegitable oil that burns cleaner than diesel by itself and if you have a free or cheap source of vegitable oil, used generally, it can be cheaper.

      Er, no. Biodiesel is a fuel produced from vegetable oil, it is not vegetable oil. The article is about a cataylst to improve the process of vegetable oil to biodiesel.

      Some people have done conversion work to run diesel engines on vegetable oil. That's way cool. But that's not biodiesel.

      Blends of biodiesel and tradtional petroleum diesel fuel are popular. That doesn't mean biodiesel is a blend.

      --
      Tom Swiss | the infamous tms | my blog
      You cannot wash away blood with blood
  5. Cheap Fuel by Thunderstruck · · Score: 3, Interesting

    I was unable to tell from TFA, though I did not read it closely, whether this will make soy biodiesel as cheap or cheaper than standard diesel is now.

    Not that it matters, I just bought a nice, fuel efficient gasoline powered car... It should be wearing out about the time the patent expires on this new process.

    --
    Trying to use sarcasm in text-based forums does not work.
  6. Vegetable fuel by Kelson · · Score: 4, Insightful

    This reminds me of an article I read a few months ago about using corn to produce ethanol on a large scale as a renewable resource. Follow-up articles pointed out that corn (maize, specifically) isn't a particularly efficient crop, which meant that the environmental impact of drilling for oil and depleting oil reserves was just being shifted to depleting topsoil. Very much a "no free lunch" reaction.

    If this biodiesel process can be applied to enough different types of plants, then it should be possible to pick and choose crops based on what does well in a given area -- after all, we don't have to worry about market pressures and what people want to eat, it's just going to be converted into fuel -- which should minimize the effects of choosing hihg-impact crops.

    1. Re:Vegetable fuel by Fnkmaster · · Score: 4, Insightful

      Nobody except corn farmers has ever proposed using corn ethanol as a fuel on a meaningful scale. That is just a farming subsidy scam and a straw man used by confused or malevolent opponents of ecologically sound fuels, or those with political agendas in line with the fossil fuel industry.

      Bioethanol is ethanol made from cellulose feedstocks. These should, in practice, be much lower in terms of energy input required than corn or similar crops used for human consumption. The economics of bioethanol produced by SSF (simultaneous sacharination and fermentation) bears almost nothing in common with corn ethanol.

      Furthermore, if you get rid of farm subsidies from the equations, then the market should take care of making sure energy costs are fully reflected in all prices. Carbon impact is another story, but shouldn't be too hard to measure (and probably is closely correlated with the portion of costs attributable to energy use).

      As for biodiesel - I am under the impression that the major costs are associated with the feedstock itself, not with the acid used in processing. From memory, I think that the feedstock cost is responsible for at least 60-70% of the final cost of biodiesel, so I wouldn't expect a 10x reduction in acid costs to save more than a few percent in total cost. Genetically engineered bacteria seem to provide the most reasonable way to make an oil feedstock for bioethanol production efficiently. The reason that some people think biodiesel is cheaper than diesel is that in Europe they get huge tax breaks on biodiesel, so they are comparing apples to oranges.

      Bioethanol is by far the most promising alternative fuel available today, with attractive envrionmental impact and economic characteristics, and only modest incremental cost to make Flexible Fuel Vehicle engines that can burn either ethanol or gasoline. It's too bad there is zero governmental support for this here in the US. We could greatly reduce our foreign oil dependence within 5-10 years with just a bit of political willpower.

  7. not a catalyst by fuck_this_shit · · Score: 4, Insightful

    catalysts? acids? expensive? the definition of a catalyst is that they do not get transformed in an reaction but simply speed it up. In this case it rather sounds as if the acids are a simple consumed reactant.

    1. Re:not a catalyst by wfberg · · Score: 5, Insightful

      catalysts? acids? expensive? the definition of a catalyst is that they do not get transformed in an reaction but simply speed it up. In this case it rather sounds as if the acids are a simple consumed reactant.

      A catalyst not being used up is all good and well, but it doesn't do you very much good in the cheap department if you can't easily get that catalyst to stay where the reaction is taking place; i.e. if there's no way to get the catalyst out of the resultant biodiesel and into a fresh batch of vegetable oil, it's not getting consumed, but it's getting siphoned off (via the endproduct) none the less.

      --
      SCO employee? Check out the bounty
  8. Well by hug_the_penguin · · Score: 5, Interesting
    It isn't going to solve the world's dependence on oil overnight, but it's perhaps a step forward.

    The next problem will be a shortage of arable land due to land used to produce the vegetables that are then going to become diesel. This could solve one problem and lead straight into another

    --
    ~HTP~ Hug that tux ;)
  9. In other news... by Kohath · · Score: 4, Informative
  10. Everone wins! by ThatGeek · · Score: 4, Insightful

    If I were from one of those square-type states with lots of farms, I would be on this in a second. It would be the holy grail for farmers: a way to link national security with farm supports.

    If the government could help farmers grow soybeans and in return reduce dependence on foreign oil, both left and right wingers would be happy. Imagine that! Good for security, good for American jobs, good for the environment, and even good for business (cars would need some retooling).

    Where do I sign up? Oh, it's one of those "This technology will be really cool when it becomes available in 10-15 years" stories, huh?

    --
    What are you eating? isItVeg?.
  11. SVO by evenprime · · Score: 4, Informative
    You still have to play with nasty chemicals when you convert veggie oil to biodiesel. If you are dead set on producing huge amounts of particulate emmisions (i.e. running a diesel) it might be better to use one of the conversion kits and run straight veggie oil.

    Don't mod me into oblivion for pointing out a negative to biodiesel. I know about the benefits: http://www.thecarconnection.com/Auto_News/Green_Ma chines/Diesels_Clean_Green_Illegal.S196.A3569.html

    --

    "Weapons should be hardy rather than decorative" - Miyamoto Musashi
    I think that goes for OS's too
  12. MOD PARENT DOWN TO HELL by imsabbel · · Score: 4, Informative

    This isnt about ethanol. This is about biodiesel.
    Minimally modified vegetable oil.

    PLEASE STICK your old propaganda shit (which you already had prepared, because it would have taken you longer to write that article than the story is online) and shove it up your ass.

    --
    HI O WISE PRINCE. WHT TOOK U SO DAM LONG?
    1. Re:MOD PARENT DOWN TO HELL by (negative+video) · · Score: 4, Insightful
      All biofuels are plagued by the same production inefficiencies, since photosynthesis itself is less than 1% efficient (Solar irradiance at a generous max of 1000W/M^2 would leave you needing a few dozen acres per tiny car).
      I thought photosynthesis was actually ~5% efficient. Anyway, assume 1.25% efficiency because much energy goes to tissues other than oil, 6 hours/day of sunlight, and a 180 day growing season. That's ~50 MJ/m^2/year of captured energy. A that car requires 37 kW (50 horsepower) for one hour a day needs ~50 GJ/year. Obviously you'd need 1000 m^2/car/year = 0.25 acres/car/year. Use a factor of four to account for various losses and that's 1 acre/car/year. Hardly dozens of acres per tiny car.

      Can that be right? One acre is barely enough for a horse. Either I slipped a decimal point or horses are really inefficient.

      The real problem with biofuels is not efficiency. It is chemical conversion. Getting the molecules into the proper shape at low cost will take a lot of clever chemistry that hasn't been done yet. The "breakthrough" under discussion is one piece of the puzzle.

    2. Re:MOD PARENT DOWN TO HELL by yndrd1984 · · Score: 4, Interesting
      1000 w/m^2 is still 4047 kw/acre - even at 1% efficiency on 2 dozen acres you're talking a megawatt per car!

      With some additional data:

      20 horsepower (average use) * 746 watts/hp = 14920 watts for a car to run all the time - so say an average of 1500 if it's used 10% of the time

      Even at 1% solar to fuel efficiency and 33% car efficiency, that's 450 kw or 450 m^2 per car

      an acre is about 4047 meters => 9 cars/acre

      A different way (I know it's only Wikipedia, but if these numbers are right...):

      Algae: 10,000 to 20,000 US gal/acre

      Let's see: I use about 15 gal/week * 52 weeks = 780 gal/year - let's make it 1000 - so I'd need up to 1/10 of an acre.

      Since it takes about an acre of farmland to feed a person, this seems quite reasonable. Even better, algae can be grown in the desert using seawater, so land and water that is useless for most other purposes can be used for biodiesel.

  13. That's not the problem. by Jaywalk · · Score: 4, Interesting
    The problem with biodiesel isn't that it's too expensive to produce. The problem is that there simply isn't enough oil to replace significant amounts of fossil fuel. And there is the issue of what happens to the price of food oil if too much vegetable oil is converted to fuel usage. According to this study by the University of New Hampshire, it is possible to make the necessary oil using oily varieties of algae which can be produced on non-arable land.

    Making soybean biodiesel cheaper won't solve the problem because the limited supply will only meet so much of the required energy needs. It might even cause more problems by creating economic pressure to convert food oils into fuels.

    --
    ===== Murphy's Law is recursive. =====
  14. Not Invented Here by tacocat · · Score: 4, Interesting

    Since this is an accomplishment not by American Industry and is contrary to the current powerbrokers of Dino-fuels it won't mean shit in America.

    2005: law is passed giving a tax credit for bio-diesel mixes. But this eliminates all B-100 biodesiel because it's not a mix. Tax rebates are not made available to the consumer.

    2006: law goes into effect which raises the bar on small diesel engine emissions (commercial vehicles excluded) making it impossible to sell a new diesel car in the United States because the fuel used in the Unites States is too dirty to pass the emissions test. It is not the engine, it is the fuel that fails the test. There are no American automotive manufacturers selling a diesel engine in the United States.

    2007: law is supposed to go into effect to introduce low sulphur dino-diesel which should permit diesel sales to go into effect. I'm a little suspicious that this law isn't currently under assault. But we won't know for another year.

    Go search the internet. The technology for production of bio-diesel and the studies identifying the environmental benefits have been in publication, on the internet of all places, since 1998. And what has been done about it?

    1. Re:Not Invented Here by MtViewGuy · · Score: 3, Informative

      Actually, the EPA mandate for low-sulfur (15 parts per million or lower) diesel fuel starts in Summer 2006, along with the same mandate for gasoline.

      This is actually a good idea because removing the sulfur compounds from diesel fuel allows for the use for high-precision pressurized common-rail direct fuel injection into the combustion chamber and the use of a new generation of catalytic converters that double as diesel particulate traps. I've read that BMW has actually gotten their 2.0-liter I-4 and 3.0-liter I-6 turbodiesel engines to meet the 2007 California Air Resources Board diesel emission standard for automobiles using low-sulfur diesel fuel, a truly remarkable achievement considering the difficulties in reducing diesel emissions. This could pave the way for BMW to offer their highly-regarded 3.0-liter turbodiesel engine on the 3-Series and 5-Series vehicles along with the X3 and X5 "crossover" SUV's in all 50 states starting in the 2007 model year.

  15. Bottlenecks by pavon · · Score: 5, Informative

    In many places biodiesel has been more expensive than regular deisel, until the recent jump in oil prices. In addition, there have been a couple of recent subsidies that have brought the price of biodiesel down at the pump. It wasn't too long ago when biodiesel was 2x the price per gallon, and not everyone has caught up to the fact that this has changed. Regardless any decrease in cost is still a great thing.

    For biodiesel created with conventional crops the bottleneck is like you said, that there isn't enough enough aritable land on the planet to create as much biodiesel as we currently use in gasoline and diesel. Algae based biodiesel solves this problem but is significantly more expensive to produce than convientional biodiesel last time I checked. Honestly though, I haven't heard about any new research in that field since the DOE Algae program was put to an end back on Clinton's watch.

    In reality there is no one solution to the problem. The solution will be a combination of an increase in biofuels, more efficient cars, more public transportation that runs off the grid, and even then transportation will likely be more expensive than we have become occustomed to transportation.

  16. Waste oil by Anonymous Coward · · Score: 4, Funny

    I've heard that assuming you can get your hands on waste oils (such as used vegetable oils) then biodiesel is pretty cheap to manufacture. The problem is, we just don't have enough waste oil to make a dent in our reliance on foreign oil.

    Well, I've singlehandedly come up with a solution to this problem. Legislation must be put in place that requires all foodstuffs consumed in the United States to be fried. Meats, breads, veggies - it all needs to be fried. Once all food is fried, there will be plenty of waste oil to go around.

    Are you doing your part? Step away from the grill - it's the law.

  17. Re:Human energy use linked to global warming by sam_handelman · · Score: 4, Insightful

    Evidently you skipped class when they covered photosynthesis.

    All that reduced carbon in the plant-oils COMES FROM CARBON DIOXIDE IN THE ATMOSPHERE.

    Thus, biodiesel is sustainable.

    The *real question* is, how much energy from fertilizer does it take to make this biodiesel? I'd understood that to be the big expense (along with the water,) and not the processing, but I could be mistaken.

    --
    The good and new comes from no quarter where it is looked for, and is always something different from what is expected.
  18. A few more details, re: homebrewing etc. by wherley · · Score: 4, Informative

    The acid catalyst they are talking about replacing is liquid Sulphuric Acid. Most homebrewers of biodiesel, like those using an "open source" Appleseed type reactor, are not using both an acid and base catalyst, only the base being Potassium Hydroxide or Sodium Hydroxide (along with Methanol or Ethanol).
    With higher Free Fatty Acid feedstock, such as really used grease, the acid cataylst helps convert those FFAs. You can read a little more on the chemistry of
    the news item here:
    http://www.greencarcongress.com/2005/11/inexpensiv e_eff.html
    Nature abstract:
    http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd= Retrieve&db=pubmed&dopt=Abstract&list_uids=1628102 6&query_hl=3
    Another abstract:
    http://www.researchsea.com/html/article.php/aid/34 0/cid/2/research/green_chemistry__efficient_cataly st_for_making__biodiesel_.html>

    Seems this process is five times more reactive than other solid catalysts, but still 50% that of the liquid acid - however sepearation afterward would be much
    easier.

  19. Tokyo Institute of Tech by Wingie · · Score: 3, Funny

    Should we really be trusting the research of someone from a place called TIT?

  20. Re:Human energy use linked to global warming by TykeClone · · Score: 4, Informative
    Not much. Biodiesel is made from soybeans, or rapeseed, both of which have relatively light fertilizer requirements.

    Not sure about rapeseed, but soybeans require fairly heavy herbicide treatments to get good crops. And with Asian rust coming to the states, fungicide as well!

    I think that corn is a less energy intensive crop to produce per bushel than soybeans. 1 acre on a good year (like this year!) will yield about 55 bushels of beans. That same acre on a good year (like this year!) will yield about 250 bushels of corn.

    --
    A fine is a tax you pay for doing wrong and a tax is a fine you pay for doing all right.
  21. necessity of exporting? maybe not... by zogger · · Score: 5, Interesting

    The development of other fuels will not negate the usefullness or use of traditional petroleum. Nations that are oil rich will continue to use the fuel,especially if it is their primary natural resource, even if their export market diminishes. And especially then, with no imported cash from exported oil, they would be literally forced to directly use the oil themselves to the best of their ability. And it is quite possible that as the islamic world (if we want to limit the discussion to there) matures (most are under the age of 30 right now), they will want their own manufacturing and other islamo-centrist based business, rather than purchasing products from other areas. Necessity *and* desire at that point. You have to remember, petroleum is not only a transporation medium, it is also critical -today at least- for manufacturing.

    With that said, I heartily welcome more R and D and deployment of biofuels. But older fuels are still used, I am using "stored solar"-wood-as my primary residential heating source, same as humans have been doing for millenia. We have a "domestic supply" and it is quite significant enough for our needs, hence no need to "export cash" to purchase someone elses developed energy product, nor do we need to "export the raw materials" for anyone else to use. That's a micro scale, macro between nations is just "larger".

    Humans will use up the available petroleum, biofuels becoming massively more available or not. The use will only drop when it gets closer to a stasis point, when it takes one "barrel of energy" to produce an identical barrel of energy. Then it will stop.

    1. Re:necessity of exporting? maybe not... by maomoondog · · Score: 4, Insightful

      Burning is the crudest possible use of petroleum. Petroleum based materials exploit the complex molecules left in hydrocarbons by life processes in a much more important way: as structural features. It costs orders of magnitude more energy to synthetically create that kind of structure than we can generate by burning it to release that bond-energy. However, today's energy is considered more valuable than tomorrow's plastic, so we just blow the stuff up.

      I agree that petroleum will be exhausted, regardless of alternatives. But hopefully finding new energy sources will let us use it in much more far-sighted ways. This should be right up there in the benefits list, alongside environmental advantages and the opening of foreign policy options.

  22. bad comparison: diesel!=gasoline by evenprime · · Score: 4, Informative
    You didn't even respond to the relevant point of my post: I believe SVO is more beneficial to the environment than biodiesel. Worse, you didn't seem to understand what you did respond to. You said

    OTOH if you had even Googled "biodiesel carcinogens" you would know that one of the benefits of BD is exhaust that is 90% less carcinogenic than exhaust from petro-diesel.

    I'm already aware of the benefits of bio-fuels over petroleum diesel. I'm even aware of the CO2 benefits of bio-fueled diesel engines over gasoline engines. It would be difficult to read slashdot without being aware of the benefits, but that's not what I was commenting on. I was pointing out a negative that is seldom mentioned on slashdot; diesel engines, even when they run on biofuels, have more soot particles in their exhaust than gasoline engines. If you google "biodiesel particulate emissions" you will see that even biodiesel advocates admit this.

    Gasoline produces 15 percent less Particulate Matter than B100 (Particulate matter from B100 is of a less toxic nature than that from petroleum products)

    Those soot particles are the main reason why the EPA gives the 2006 Jetta diesel a horrible air pollution score even though it gets over 40 mpg. The difference in particulate (soot) emissions for diesel and gasoline engines is so great that it is very difficult - perhaps impossible - to get light duty diesel vehicles (i.e. cars) Tier II certified in California.

    It is, therefore, believed that emission certification of light duty diesel vehicles in California will be possible only if advanced emission control technologies, such as particulate traps and NOx catalysts, are developed.

    Right now, every gasoline burning car that is replaced by a biodiesel or SVO burning car causes us to have higher levels of soot in the air. From my original link:

    Diesel-powered cars will always produce more particulate matter. The particulate matter, now a known carcinogen, will contribute to immediate health problems if breathed in.
    [...]
    Bad for lungs, better for the ozone layer
    Granolas are split: some think the soot from diesels does more damage to people and animals here and now, while others want to minimize reliance on fuel resources and oil drilling, and to slow climatic change.

    That was the problem I was commenting on, and you responded with something totally off topic (a comparison of biodiesel and petroleum diesel.) Now, it is actually possible to clean up the exhaust on diesels quite a bit. That same article goes on to mention a way to solve the sooty particulate emmissions:

    Diesel engines can be clean, as clean as comparable gasoline engines if the right measures are taken to reduce particulate matter. Advanced engine controls, particulate-matter traps, and new-design catalysts have helped all but eliminate particulate matter.

    Unfortunately, the article does NOT explain the drawbacks of this process; the extra emmissions control equipment costs a LOT, and it reduces the power and fuel efficiency of the diesel engine. That's a problem, since fuel efficiency is one of the main reasons we are considering diesels in the first place, which is probably why most of these methods are still not used on new diesel vehicles. Besides using oxidizing-type particulate filters to get rid of soot can even increase the levels of carbon monoxide:
    http://www.fleetguard.com/fl

    --

    "Weapons should be hardy rather than decorative" - Miyamoto Musashi
    I think that goes for OS's too