Slashdot Mirror


Brew Your Own Auto Fuel For 41 Cents A Gallon

Iphtashu Fitz writes "Damon Toal-Rossi of Iowa City, Iowa had enough of the high price of gasoline, so it didn't take too much for his friend to talk him into switching to biodiesel, an alternative fuel based on soy or vegetable oil. But after a few months of driving 10 miles to a biodiesel fuel station he decided it was time to start brewing his own. It didn't take him long to find a recipe for biodiesel, and with used cooking oil that he gets for free from a nearby restaurant, he figures he's now getting 44 miles per gallon out of his diesel powered VW Golf and only paying 41 cents a gallon. According to the National Biodiesel Board the number of biodiesel stations in the US rose by 50% last year (to a whopping 200). The president of the American Soybean Association claims biodiesel has almost the same amount of energy as petroleum-based diesel, but cleans an engine's fuel injectors and cuts down on the number of required oil changes. Perhaps these are some of the reasons why diesel powered cars are making a comeback in the US."

48 of 991 comments (clear)

  1. Great... by SoTuA · · Score: 4, Insightful
    ...as long as you:

    a) Have a diesel car.

    b) Have somebody who will give you free used oil.

    Not all of us live nearby KFC :)

    1. Re:Great... by Anonymous Coward · · Score: 5, Insightful

      Actually, getting free used oil is easier than you think owing to:

      a) Any restaurant that does frying has used oil. (Even that mom'n'pop boutique place you like to frequent)

      b) Restaurants normally have to pay someone to have their used oil hauled away.

    2. Re:Great... by sunking2 · · Score: 5, Insightful

      Bingo, it's great while there are only a half dozen people who try it per town. As soon as more than one person goes and asks an owner for their used oil guess what? No more free used oil. Crude oil prices are what they are because it's a traded commodity, not because it's hard to get or difficult to refine. What people are willing to pay is what dictates the price, not the threat of running out.

      Create a demand and like everything else, prices will rise.

      Not that I'm totally against the idea, but you can't base the impact on a real economy on a test case of a few people here and there.

    3. Re:Great... by Hard_Code · · Score: 4, Insightful

      Except that biodeisel is renewable and probably doesn't carry as many nasty political ramifications as fossil fuel.

      --

      It's 10 PM. Do you know if you're un-American?
    4. Re:Great... by brad_brown · · Score: 2, Insightful

      Willing to pay?! I'm not willing to pay, I'm forced too! Gasoline powered vehicles are still the cheapest ones to buy, and I got mine before this price gouge. Can't afford another car. If I had a choice, I'd walk to work. ...be an awfully long walk.

    5. Re:Great... by joshmccormack · · Score: 2, Insightful
      Not entirely true.
      • Waste vegetable oil costs money to dispose of. A lot of vegetable oil is used and disposed of, so there's a supply. (diners, chinese restaurants, take out places, etc)
      • Crude oil has to be removed from the Earth. It's often under deep water, miles below frozen, rocky Earth, or below people who want a lot of money for it.
      • It's doubtful demand will increase substantially. Car manufacturers are not quick to change, and they seem to be pretty comfortable making gas guzzlers. Diesels have a rep for low power, too. People often assume an alternate energy option has to or will be used by everyone in the world, which it really doesn't have to be.
      • Refining crude oil is amazingly complex compared with filtering cooking oil and adding a little kerosene and lye.
    6. Re:Great... by dildatron · · Score: 3, Insightful

      Oh, sure! Now you'll probably tell me that they re-use motor oil and cardboard! If they ever start recycling the aluminum cans I put my lips too, boy I am not sure what I will do! Seriously, to the parent poster, do you think oil is clean when the get it from vegetables, or that we can pump gas straight out of the ground? Oil can be cleaned and filtered, and used again no problem.

      --


      If you had nuts on your chin, would they be chin nuts?
    7. Re:Great... by Otter · · Score: 4, Insightful
      I think his point is that the 41 cent figure is completely meaningless when he's getting the raw material for free. (Although, don't restaurants sell their used grease to recyclers? That was the case in my fast food days, long ago.)

      On the other hand, if biodiesel takes off there will be an economy of scale that will offset the increasing demand for restaurant grease. KFC and Long Jon Silver's will still have price increases, though.

    8. Re:Great... by ichimunki · · Score: 2, Insightful

      It's still a pretty inefficient use of the stored energy to use any kind of oil-based fuel to propel a 4000 pound vehicle around (average new car weight), just because you need to move a single human around. Depending on the size of the human, the overhead from the vehicle is anywhere from 10x (Cartman sized) to 40x (100 lb. supermodel) as much as the reason for the vehicle needing to go anywhere.

      And while I'm no physics major (and I'm sure all the physics majors out there will correct me) I understand that the difference in energy required to move an object is something like squared with the mass of that object (let's also forget that I'm confusing weight and mass here)-- maybe not squared, but not linear.

      This tells me that simply trying to find cheaper fuels is not a serious attempt to remove the bottleneck in this process. Probably radical alterations to the vehicle are necessary if one is to avoid the ongoing problem of paying for gas/fuel.

      --
      I do not have a signature
    9. Re:Great... by Ralph+Wiggam · · Score: 4, Insightful

      The 470 million arable acres is for everything, not just soy beans, right?

      So the US could stop growing corn, wheat, and everything else in order to provide a whopping 2 percent of our gasoline?

      Here's a crazy idea. Why don't we use less gas.

      -B

    10. Re:Great... by provolt · · Score: 3, Insightful
      $4 per gallon would be about right, a little under cost per gallon in most other countries (Britain, Europe, etc) for gasoline (around $5 per gallon globally).


      Yes, the price at the pump is higher in Europe than in America and is probably close to the numbers you give. However European prices for gas are so much higher because of the huge taxes that are placed on petrol. If you exclude taxes, prices in America and Europe are quite comparable.

    11. Re:Great... by Phurd+Phlegm · · Score: 3, Insightful
      Hmmm. This reference claims 100 gallons per acre, and I saw another than claimed 145. Also, "gas usage" != "Diesel usage," since Diesels are usually more efficient. However, 100*4.7e8 = 4.7e10. Divided by US population is around 160. Allowing for the fact that we need to eat something that's still only on the order of a tenth of the amount we're burning now.

      Myself and my three kids use only around 140 gal/year per each even with three cars--I assume that the 1000 gallon figure includes heating, manufacturing, shipping, and so forth? I have no way of evaluating whether the correct figure is near 12 or 150 gal/acre.

    12. Re:Great... by BryGy · · Score: 2, Insightful

      You would realistically need to cut the arable land at least in half. Soybeans and Corn are cultivated in an every other year rotation. So one year you grow corn, and the next year you grow soybeans. The beans replenish the nitrogen levels in the soil or at least don't take near the amount of nitrogen as required by corn. Plus, how much of that 470 million acres is used to farm wheat?

      Biodiesel is not viable replacement for fossil fuels.

      --
      Smile, it makes people wonder what you're up to!
    13. Re:Great... by L0rdJedi · · Score: 2, Insightful

      Europe has much higher fuel prices.

      Except that half the price of their gas is a tax. So if it's $4/gal over there, it's really only $2/gal since the rest is all taxes. Ours isn't that bad yet.

      We evolved our society in one direction ([sub]urban sprawl/commuting) and they in another (it helps that they are so small and dense though).

      They also had the advantage of simply existing first. And not all areas of America are urban sprawl and commuting. New York is probably the most like Europe with everything packed so close together and a great public trans system.

      Let's also not forget that gas prices are highest in California (I think that's right) because we have the strictest environmental laws in the entire country. Hell, one of the components that was suppose to help the environment it turns out is bad and now has to be taken back out of the gas.

    14. Re:Great... by Woody77 · · Score: 2, Insightful

      Actually, the reason is demand. The manual transmissions available in light trucks tend to fall into two categories, the ultra-light-duty one that's coupled with the most-base engine available, and the ultra-heavy-duty one that's for use with the monster diesel that's used by people who actually need to tow.

      The small manual transmission is either unpopular, or not strong enough for the middle of the road engines that are most popular (ie, the big V8s).

      The small manual is probably tuned for a V6, and the big manual is designed for a big turbo-diesel.

      AFAIK, you can't buy a 1/2-ton pickup in the US with a big V8 and a manual. No one wants them.

      I just know that after owning a 5000 lb, 1/2-ton rated 4x4 pickup with a vig v8, and a slushbox (automatic transmission), I'm not owning another. Next truck will be diesel and a manual.

      Not for the massive towing capacity, but for the doubled milage of the diesel, and the greater durability and control of the manual (plus it's just more fun in the hills to have a manual).

      If any of the big 3 came out with a quality inline-6, 4 liter (or so) turbo diesel for use in 1/2 tons and smaller trucks, they'd sell like hotcakes. Especially with the current fuel prices, the MUCH greater mileage, and the new common-rail injection that makes even the big engines (the 5.9L Cummins, for instance) VERY quiet.

  2. Like they say about Linux... by sulli · · Score: 5, Insightful
    Biodiesel is only $0.41/gallon if your time is worth nothing.

    Sounds like a fun project though. The warnings about the various poisons certainly got my attention.

    --

    sulli
    RTFJ.
  3. And that's why this isn't sustainable... by Jerf · · Score: 4, Insightful

    with used cooking oil that he gets for free from a nearby restaurant

    Nifty, but if we all went out and did this, the price would skyrocket. Hell, if only all the people who read this story on Slashdot went out and did this, the price would skyrocket.

    All this story says is, "If you get free stuff, you can make other cheap stuff out of it." Regrettably, we're not solving any energy problems by starting with "If you get free stuff..."

    (It's great the guy did this and I respect the hack that this embodies. But people shouldn't try to draw too many conclusions from this. All the cooking oil I've used so far this year (and I don't order many fried foods from restaurants so that's the majority of "my" share of oil) wouldn't hardly get me out of the city.)

    1. Re:And that's why this isn't sustainable... by fireduck · · Score: 2, Insightful

      There are tons of restaurants all across America and they all generate waste oil.

      While it is true that there are quite a few restaurants in the U.S., I think it is safe to say that there are at least a lot more cars than restuarants (i'd say by at least an order of magnitude). I'd further imagine that if everyone switched to biodiesel, used cooking oil wouldn't even be able to supply all of the workers at a given restaurant (owner, shift managers, bus boys, janitors, etc., etc.)

      Although I can't find decent statistics on how much waste oil is produced, one website claims that McDonald's produces 360 liters per month. Which is 95 gallons of diesel, assuming perfect efficiency. Given that McDs probably has 5 or 6 people per shift, 3 shifts a day, that's 18 different employees at a minimum, which comes out to 5 gallons per month per employee. Certainly not enough to supply just the employees at one company or even Mad Max...

    2. Re:And that's why this isn't sustainable... by Jerf · · Score: 2, Insightful
      This isn't just a reply to hackstraw, it's a reply to all my repliers up to this point, except the SCO one.

      All three of you show no understanding of economics, even the stuff that's been known since the eighteenth century.

      Here's some hints, though I can hardly provide an entire education in a Slashdot posting:
      • Demand, supply, and price are all interrelated. You can't posulate a rising supply and a constant price. That's impossible.
      • The reason it's free right now has nothing to do with "already being used". It's because there's no demand for it right now. In fact, there's "negative" demand, in that there is a demand for services to take it away. Raise demand, and you'll raise price, and I guarentee you it'll shoot right up to be slightly more expensive then normal gasoline in short order, with only a very small supply. (It won't shoot past gasoline significantly because then people will just buy gas.) The supply will remain small, because thanks to the interference of gasoline, you can't support an infrastructure that produces the stuff with the explicit goal of using it as fuel. If you could, we would be doing it right now. Thus, logically, using simple economics, this can't get large.
      You can't solve the energy problem by starting with "If I get free stuff...."

      You also can't solve it with "If we ignore all laws of economics..."

      This is a cute hack. This is not a sustainable source of energy and it never will be. Resist the Big Number Fallacy. Per-capita "production" of used oil is laughable, even if the absolute numbers look big; the energy demand numbers are even bigger, by a lot.
  4. one problem by WormholeFiend · · Score: 4, Insightful

    is that biodiesel gels at about 32 degress F. So, if you are parking your car outside in below-freezing temperatures, you have to mix it with petroleum diesel and/or add anti-gelling additives.

  5. Free Used Oil by essiescreet · · Score: 2, Insightful

    As soon as there's a demand, Mc D's or whoever will be selling this, too.

    I'd switch, but my truck's almost paid off and I don't want to have to replace it. If our president would give me a $5,000 tax break to switch (instead of my boss a $30,000 tax break for driving an SUV, this is assinine) I'd switch.


  6. Availability by FortKnox · · Score: 4, Insightful

    Biodisel is a bad solution to the oil problems in america. Why? Because if 50% of cars on the road today had biodeisel, then the price would skyrocket. Why? Although McD's produces a ton of greaseburgers, there simply won't be enough used oil to produce enough fuel for everyone. Wish I had the link to the stats... I'll google around and give the link.

    --
    Good quote, too many chars. Seriously, the slashdot 120 char limit sucks!
    1. Re:Availability by and+by · · Score: 5, Insightful

      Yes, but if everyone in America were to convert to using biodiesel, then there'd be an impetus to make it commercially on a large scale. Essentially, we'd have farms producing either vegetable or soy oil for use as fuel. You can make biodiesel out of fresh oil even easier than out of used oil.

    2. Re:Availability by wherley · · Score: 5, Insightful

      If *anything* changed step-function-wise to 50% it would be a problem.
      Most of the biodiesel in use today in the US is not from used vegetable oil - it's from new soybean (and other seed) oil. Put the American farmer back into the energy loop growing soybeans and take foreign oil sources out - how is that a "bad solution"?

    3. Re:Availability by pavon · · Score: 4, Insightful

      Here is some info about biodiesel quantities I posting in another biodiesel thread. Biodiesel using conventional crops is not a feasible replacement for gasoline. As posted on slashdot before, there have been some preliminary studies using algae that look promising, but until we get some functional plants operating, I will be suspicious of their numbers. Nothing against them, it's just that they are researchers not business men, and usually don't have the experience necesarry to predict real world numbers.

      I really hope that biodiesel does pan out. I really don't see fuel cells getting anywhere, nor do I see battery technology getting good enough anytime in the future. If we don't get a good fuel before the price of oil jacks up, then the only viable form of transportation is going to be electric rail, which is fine for dense areas, but is bad news for the US.

  7. Re:It seems foolish... by Anonymous Coward · · Score: 1, Insightful

    with millions of people starving to death in the world, that we use food (soybeans, etc) to make fuel. It's really sad actually.

    Nonsense. There is no shortage of food in the world: the reason people are starving is distribution issues. In most cases it's because their corrupt governments are siphoning off money from aid programs...

  8. Not foolish at all... by PatHMV · · Score: 5, Insightful

    People are not starving because there is not enough food in the world, but because in too many places the distribution system is not very efficient, or is actively perverted by armies, dictators, and other autocrats. If we can find a way to use inexpensive, renewable plant matter to generate energy, it will ultimately improve the lives of people all over the world, especially in those places too poor to buy oil right noww.

  9. Re:How's it smell? by FortKnox · · Score: 2, Insightful

    Which is why you get your grease at dunkin donuts or tim hortons. Mmmmm.... donuts.... EVERY TIME YOU DRIVE! ;-)

    --
    Good quote, too many chars. Seriously, the slashdot 120 char limit sucks!
  10. Re:It seems foolish... by SoTuA · · Score: 2, Insightful

    Uh, yeah. God forbid we deprive the poor starving masses of their USED cooking oil.

  11. Biodiesel - myth? by stratjakt · · Score: 2, Insightful

    If every gas-powered vehicle - and hell, my diesel burning furnace - ran on diesel tomorrow, would it even be feasible to produce that much biodiesel?

    I mean I remember refining some vegetable oil to fire up the science teachers Golf as an expirement in high school. Pretty neat, but we used gallons of vegetable oil to wind up with a couple litres of fuel.

    It seems to me we could clearcut every old growth and rainforest on earth, and still not have enough landmass to produce enough of this fuel.

    I've also heard it's proponents spewing absolute bullshit. I believe it was Darryl Hannah (or some other washed-up 70s pinup) I saw on TV spouting off about her biodiesel powered car.

    When she claimed it produced "no toxic emissions" I scoffed, when she said it produced no carbon dioxide, I just switched the channel.

    You're still burning hydrocarbons, after all. Just not ones that have been in the ground a million years.

    I don't pretend to have studied it, I have no idea how much oil an acre of corn/soy yields in a season. It doesn't seem feasible to me, else the farming lobby, who have the political and economic clout to CRUSH OPEC, would have done so by now.

    How much does this guys 41 cents/gallon really cost if you dont get the oil for free?

    --
    I don't need no instructions to know how to rock!!!!
  12. Re:Clean?! by crackshoe · · Score: 2, Insightful

    Um... i've done a fair amount of frying, and I don't really see how one would fry with oil diluted with water, or, even if it was, if there would be a problem seperating the two. I, on the other hand, know nothing about the fry oil used in chain resteraunts, so hey, maybe its so.

    --
    Don't worry - its just stigmata. Pass me a napkin and don't you dare tell my mother.
  13. Re:How's it smell? by Adriax · · Score: 2, Insightful

    Taking that into account, I'm surprised McDonalds and all the other fast food places aren't doing everything in their power to promote biodiesel. It's another great advertising avenue, and they could make money by selling biodiesel made from their exaust.

    --
    I don't suffer from insanity, I enjoy every minute of it!
  14. Re:More Great News About President-Vice Cheney by dnoyeb · · Score: 2, Insightful

    I think the journalist has every right to call Cheney on his salary. This is something he should have considered before he took compensation in the way that he has. Its just a side effect of his tax evasion scheme. A decision he should live with.

    He should have cut his ties and acccepted a lump sum considering his new job and all.

  15. why diesel is popular by SuperBanana · · Score: 5, Insightful
    Perhaps these are some of the reasons why diesel powered cars are making a comeback in the US

    No, not really. It has more to do with skyrocketing gasoline costs and the fact that TDI technology is miles above the old diesels. It's quieter, more efficient, more powerful, the blocks are lighter thanks to superior materials, and TDI isn't nearly as sensitive to the cold- it doesn't even need the glowplugs above 40 or so degrees. The glowplug system is tied into the central locking, so when you approach the car and unlock the doors, it figures out if it's cold enough to need the glowplugs and starts warming them; as a result, the car's ready to go before you are, most of the time. Diesel is also much more prevalent now that there are a lot more diesels in pickups, vans, etc used by small businesses and non-fleet operators.

    That addresses many of the concerns the public had about diesel- hard to find fuel, noisy, heavy, and a bitch in the cold.

    A lot of people get hybrids wrong too, thinking it's all the hippies buying them. Dealers say that was true initially, now it's just regular commuters who want the most efficient car. Biodiesel is a boutique fuel aside from use in fleets in 2% mixes to replace sulfur in low-sulfur fuels.

  16. What about road taxes? by aquarian · · Score: 4, Insightful

    The biggest savings these people are experiencing is from avoiding road taxes, which are a major part of the price of commercial gasoline or diesel. Right now the "underground" biodiesel movement exists in a gray area. There are too few people for the authorities to bother cracking down on, but if enough people start doing it they will. Right now, untaxed diesel for off-road use in boats and industrial/farm equipment is dyed red. If you're caught with "red" diesel in your car or truck, you'll have to pay huge fines. The dye is stubborn, too -- once it's in there, it stays for many, many tanksful.

    Sooner or later there's going to be a crackdown. Making your own biodiesel may soon be illegal, for all practical purposes -- either explicitly, or through red tape that's too hard to deal with. You're either going to have to add red dye, prove that you're paying road taxes, or something.

    Personally, I think the best way for the government to spur development of alternative fuel infrastructure is to offer a road tax holiday for alternative fuel users -- say 5 years or so. Let this apply to all biodiesel, CNG, hydrogen, ethanol, and electric vehicles.

  17. Re:It seems foolish... by Hatta · · Score: 4, Insightful

    .... with millions of people starving to death in the world, that we use food (soybeans, etc) to make fuel. It's really sad actually.

    Nobel prize winning economist Amartya Sen argues that there has never been a famine in a working democracy. This leads to the conclusion that famines are ultimately political in nature. There's always a warlord blocking food convoys, or a landlord exacting rent right off the dinner table. Or there may be plenty of food, but the sociopolitical environment does not provide the means for a person to acquire the food.

    I remember seeing footing of the great depression, in which dairy farmers dumped huge vats of milk on the ground. The problem was that they weren't getting paid enough for their milk to live on, so in protest they just dumped the milk. Perhaps they were trying to raise the price by limiting supply. In either case, if people went without milk, it wasn't because there wasn't enough milk, it was because of political and economic factors that prevented the distribution of milk to those who needed it.

    --
    Give me Classic Slashdot or give me death!
  18. Re:More Great News About President-Vice Cheney by Anixamander · · Score: 2, Insightful

    ten points if you can name another company that does what halliburton does

    Well, I suppose i can't...but that is largely because when Cheney took over at Haliburton, he cornered the market in certain areas (like Boots and Coots, who are controlled by Kellog and Brown, who is owned by halliburton). He then began lobbying the Clinton administration to go back to Iraq. Strangely enough, that lobbying took a precipitous tumble when he took office. They even note that no one else could implement the fire control plan on time but Halliburton, since it was Halliburton who wrote the plan. So to say that no else does what they do may be true, but it isn't the entire truth.

    Like they say, its like bikinis, what they reveal is suggestive but what they hide is essential.

    --
    Do not taunt Happy Fun Ball(TM)
  19. Re:More Great News About President-Vice Cheney by IdahoEv · · Score: 4, Insightful
    ten points if you can name another company that does what halliburton does


    Bechtel.

    Less snarkily:
    Washington Group International

    Transportation and Logistics Directory
    Commercial Contractors Directory

    There are hundreds of such companies in the U.S. alone. The government didn't bid these contracts - they awarded them without competition. Normally, government bids are extremely competitive because of large numbers of companies. Raytheon is a false analogy - missiles are not the same as civil engineering and logistics. Far more companies are available to provide the latter.

    Government work has half the margins of private sector work, its slum and the companies that take it suck.


    Au contraire. In many, many fields private sector margins have been cut to the bone since 1990 as competition resulted in efficiency, process redesign, downsizing, and mergers.

    What government contracts offer is steady guarantees, with reasonable margins, which is why they are so desperately competed for by many companies.

    However, the deals Halliburton and Bechtel have in Iraq are nearly unprecedented. They are cost-plus deals. Meaning, Halliburton tells the army how much they spent ... on salaries, materiel, subcontractors, everything. And the army pays them X% more than that. Period. Meaning the more it costs them and the longer it takes them, the more money they make.

    The private sector figured out a hundred years the obvious reasons why this doesn't work: your contractor now has incentive to screw you. They get rewarded for sloppy performance and procrastination, or even outright conscious delay. And human nature is what it is.

    This is why private sector contracts - and better goverment contracts - bid for a set price and deadline. Now it becomes the contractor's job to figure out how to make a profit by getting the work done under the cost cap.

    The cost-plus no-bid deals handed out for Iraq are unheard of in the business world, because it's a stupid, stupid way to do business, from a purely economic perspective. But, the nature of politics today seems to make it impossible to even discuss these things without getting called a "commie librul". You know the world's screwed up when smart business sense = communist liberalism.

    Another suggestion of a "company that would take the work"... try the Army. Until a few years ago, they provided almost all of their own logistics. It's not at all clear that it's cheaper to do it with private companies.

    It also means the military now depends on civilian companies that can and will cut and run if the security situation gets too bad ... leaving the Army up the proverbial sh*t creek without laundry, trucking, or food.

    Imagine how fast Halliburton would be gone if some terrorist DID set off a stolen nuke in Iraq, killing 1000 of their employees. But nuke or no nuke, someone's got to feed our troops. This is why Army logistics should stay in the Army.
    --
    I stole this sig from someone cleverer than me.
  20. You're right by MacFury · · Score: 3, Insightful
    Biodiesel is only $0.41/gallon if your time is worth nothing.

    Gasoline is only $2/gallon if your planet is worth nothing.

  21. Methane is the real answer by Teahouse · · Score: 4, Insightful

    I was in a college group that studied the biodiesel option, and we came to another conclusion, methane would be better. We can get it from our own societal waste products, it is much easier to store than hydrogen, and most vehicles can be converted to methane at a far lower price than any other conversion (hybrid/fuel cell/electric). There is an infrastructure in place that can be converted to dispense the product, and vehicles generally get a 3-8mpg improvement running on methane.

    I have no idea why this idea has never been persued by a few corporations. All the technology is already in place, the program could be started today, and creating methane reactors for our bio-waste would actually be a simple prospect.

    --
    "Curiosity killed the cat, but for a while I was a suspect."- Steven Wright
  22. Re:Good for individuals, not practical for society by Anonymous Coward · · Score: 0, Insightful

    You still can't get more energy out than you put in. Growing that crop waste and feeding it requires energy. That energy *has* to come from somewhere other than biofuels. You are going to use some other fuel source.

    Mass conversion to biofuels is relevent only after we figure out a way to produce large quantities of energy without creating large amounts of waste products. You know, like Carbon Dioxide.

  23. Good points by Teahouse · · Score: 2, Insightful

    I don't know how much more "efficient" we can make plants through genetic twisting. You have a very valid point. Of course, if we can increase bean yield per acre by 40%, it could also be considered energy efficency so long as the individual beans still yield the same amount of oil per bean.

    --
    "Curiosity killed the cat, but for a while I was a suspect."- Steven Wright
  24. Re:Good for individuals, not practical for society by Graymalkin · · Score: 3, Insightful

    Hey there's this awesome invention, maybe you've heard of it, it's called the Sun. At our distance from it we receive about 1kW/m^2 of energy at ground level. That is a lot of energy to collect. Photosynthetic organisms make excellent use of this energy and can do all sorts of cool things with it.

    Oh yeah we can also convert this energy into other forms and store it for our own use chemically. Crop tenders, processing equipment, water pumps, and many other aspects of biodiesel manufacture can be performed by solar powered machinery.

    Besides you seem to not understand the biofuel carbon cycle is closed. Any carbon released from burning biodiesel is carbon absorbed from the atmosphere during photosynthesis. If you've got an end-to-end solar-biodiesel system you're not releasing any extra carbon into the environment. Pumping fossil fuels out of the ground and burning them is releasing carbon into the environment that has been effectively removed from it for millions of years.

    --
    I'm a loner Dottie, a Rebel.
  25. Re:More Great News About President-Vice Cheney by AK+Marc · · Score: 2, Insightful

    Cheney left haliburton's board of directors when tapped for vice president. However, in terminating his contract with the board, he was entitled to severance. he chose to take it over four years instead of all at once for tax reasons. to imply that he 'made' $178,000 last year is incorrect. he had already earned it but took the deferred compensation. He would have got it no matter who got that contact.

    So the two choices are:
    He was paid $178,000 last year by Haliburton, or
    He was paid $890,000 before leaving to take office, but is taking money from the very government he is claiming to be serving by his tax evasion scheme.

    And it is quite convenient that he is taking it over 4 years. When he leaves office next January, he can start right back up with them without having missed a year of compensation.

  26. fat = ugly by Anonymous Coward · · Score: 1, Insightful

    According to this poll most slash dotters are actually on the skinny side.

    Thats good, because fat is ugly. Yes, I know, there are fat people out there who would like to convince the rest of the world that fat is sexy. Especially in America, where fat is all the rage.

    In fact, once upon a time, fat people generally were considered desireable, but not because of their physical sexiness...it was because of their money. Rich people didn't have to work, so they got fat.

    In America, the poor can be fat too! Aint America great! Of course there is another problem...with VERY few exceptions, all American women think they are fat. They don't realize that there is a HUGE midrange between supermodel and blimp, and women in the midrange are both non-fat and sexy.

    It is good that there are still mid-rangers in America, because I find fat to be so repulsive that I would rather stay single than date a fat woman.

    Am I a pig? I don't think so. We all have our sexual preferences, most of which are genetically determined anyway. To avoid hypocracy, I exercize regularly and eat a reasonable diet. Its not really so hard to do. Just takes an ounce of discipline. If you are pissed off at me because my distaste for your fat makes you feel badly about yourself, then why not lay off the twinkies and start swimming laps? Your body will thank you, and so will your significant other!

  27. Re:More Great News About President-Vice Cheney by Featureless · · Score: 2, Insightful

    You have a skewed view of what really happens in the private sector.

    No, he's right on.

    Most contractors in the private sector would, if it were really likely to be an issue, bid on a planning phase to investigate the soil for possible contaminants, assuming they didn't have to "discover" for free in order to even get in the door. Flat fees all the way. If you get screwed badly enough, all you can do is beg for mercy.

    Or if you basically figure you'll be OK, just write the contract contingent on conditions you expect, and if you go outside them renegotiate... you know, agree to everything before anyone writes an invoice.

    Are you getting the picture yet? Companies don't write blank checks, unless they're big, sloppy companies (of which I've worked for many - some are rich enough they can afford to be sloppy on an unimagineable scale).

    Cost plus work is done all the time. Lots of bad things are done all the time. It doesn't change the fact that fraud under a cost plus regime is much easier than under a fixed price.

    You make it sound like, when an unscrupulous contracter gets hauled into cort for playing games, that's money lost. This is, from another perspective, an enforcement action by the government. It costs money to have police, to have courts and prosecutors... what sense does it make to then balk at the costs of civil (and criminal!) actions against fraudulent contractors? Punishing criminals and hucksters is a net gain for society... And an unavoidable "cost of doing business" for an honest, functioning government.

    As a P.S., if the civil courts are broken enough that it's "too expensive" and "too time-consuming" to fight fraud, that's another topic altogether...

  28. Re:Fertilizer question by Anonymous Coward · · Score: 1, Insightful

    Yes, obviously, plants need fertilizer to grow. That's why there was no farming before the Haber process.

    (Maybe if we cut the subsidies, we wouldn't be throwing so much Haber-derived fertilizer on the ground, and would just rotate in nitrogen-fixing crops or spread shit on the fields.)

  29. Re:Stick shift on a hybrid? by whitis · · Score: 2, Insightful

    No transmission necessary for hybrids. The entire point of running a hybrid vehicle is that you can run an engine attached to a generator at constant (optimal-efficiency) RPMs, which produces power that goes to the batteries and the electric motors driving the wheels, instead of a direct-conversion setup which requires the engine to operate through a widely-varying range as in mechanical transmissions.

    Well, I always thought that was the point and that is indeed how the original mother earth news hybrid worked and how diesel locomotives have always worked (if you see a diesel locomotive, you can safely assume it is a hybrid). That and the fact that you only need a tiny engine since you only need peak power a small percentage of the time. Call those series hybrids: Engine drives generator, charges battery, battery drives motor. Car makers have come up with some parallel designs that seem to forget that principle. I think the honda insight uses a parallel hybrid where the motor/generator is connected in parallel with the engine and works in a buck/boost manner sort of like the corner cutting design of an APC UPS. The savings of this design are that you only need half as much peak horsepower from then engine for accelleration but the engine can no longer be optimized for constant speed operation. The Toyota Prius is even more perverse (and their website is so horrible that you can't get a decent explanation) but basically falls into the same category. Parallel hybrids have been around since at least the 1970s. And maybe the advantage of running at a constant speed is significantly less with fuel injected engines than carbuerated engines.

    Even the 1979 Mother Earth News hybrid car conversion design that sparked so much interest in hybrids was flawed in that it used the original vehicle transmission and power train. It got about 80mpg but only had a top sustainable speed of 45mph (though it could go much faster for short periods of time using battery power).

    Now the way I would design a car (and I do have experience developing motor controllers for mining locomotives and industrial uses) would be different. There would be one motor per wheel. No transmission. No differential (that eliminates 3 on 4WD vehicles). No CV Joints. No drive shaft and U Joint. Indeed the motor would probably be directly coupled to the wheel (indeed the wheel bearings would be the motor bearings) if the motor design can be properly matched to the vehicles speed/torque (locomotives have a simple reducing gear set but they operate at much higher torque). Each motor would have a separate controller, though they would be linked. Full 4 wheel drive. The metal, weight, and cost you saved by eliminating all those unnecessary components (and by reducing the size of the engine) would be reinvested in motors, generators, and batteries. And I would be tempted to have two small gasoline engines and generator instead of 1 large one. This way, you could keep one engine shut down when it wasn't needed and if there was an engine or generator failure you could still drive home but at a slower speed. The dual engine system would be great for people who wanted to experiment with alternative fuels, too, particularly with a second gas tank. You could replace the jets on one of the carbs for a different fuel (like ethanol) or swap out a diesel engine for a gasoline engine (bear in mind these would be small, cheap, and even expendable lawnmower size engines). Likewise, a failure of any of the four motors or controllers would leave the vehicle driveable. For a fully electric vehicle, you pop out the engine/generator modules and replace them with batteries. And of course you have regenerative braking. A vehicle like this would probably be more expensive (and there would certainly be more up front engineering costs) but I would expect considerably more mileage. One could also consider eliminating the steering mechanism. With separate motors and controllers on each wheel it is quite possible to turn the vehicl