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Burn Grass, Get Green Biofuel

Roland Piquepaille writes "Do you want to use an economical and environmentally friendly biofuel? Just grow grass. Burning grass pellets will produce an energy-efficient biofuel, according to Jerry Cherney, a professor of agriculture at Cornell University. In this news release, 'Grass as Fuel,' he says "Burning grass pellets makes sense; after all, it takes 70 days to grow a crop of grass for pellets, but it takes 70 million years to make fossil fuels." Unfortunately, there is nothing like a grass political lobby in Washington, so he might not be heard. But with current oil prices, more and more people will be tempted to use cheaper -- and cleaner -- sources of energy. This overview contains many more details and references about this environmentally friendly biofuel made from grass."

33 of 440 comments (clear)

  1. Obvious marijuana jokes aside... by kwoo · · Score: 4, Insightful

    One thing I don't get is how burning grass is not seen as having the same emissions problems as burning other organic material.

    I'm no expert on American environmental regulations, but wouldn't a low-emission or zero-emission fuel source be considered more highly for North American use?

    1. Re:Obvious marijuana jokes aside... by __aamcgs2220 · · Score: 2, Insightful

      Good point, but I have to disagree with you in one area. Yes, the grass did remove some carbon dioxide from the air while it was alive, but not all of the carbon it will release when it is burned came from the air. Some, and I would venture to guess most of it came from the ground. So there is still a net increase in atmospheric carbon due to burning grass, though it is still less than burning hydrocarbons.

    2. Re:Obvious marijuana jokes aside... by Anonymous Coward · · Score: 1, Insightful

      And the carbon got into the ground how? In the end it all is a big cycle althrogh not always a direct one.

    3. Re:Obvious marijuana jokes aside... by gwydion04 · · Score: 5, Insightful
      Plants do not get the majority of their carbon from the ground. I quote from Wikipedia:
      "Plants are autotrophs, which means they are able to synthesize food directly from inorganic compounds, instead of eating other organisms or relying on material derived from them. Most notably, they use carbon dioxide gas and water to produce sugars and oxygen gas. The energy for these processes comes from photosynthesis. For instance, the over-all equation for the production of glucose is:

      12H2O + 6CO2 + light --> C6H12O6 (glucose) + 6O2 + 6H2O

      The glucose is variously used to form other organic compounds, such as the building material cellulose, or it may be used as a fuel."
      Cellulose = polysaccharide that makes up the majority of a plant's structure - i.e. what you would burn.

      Plants need only minerals and water from the ground - that's why you can grow them with hydroponics. Crack open that high school bio textbook before posting to avoid such future didatics from your fellow slashdotters. ;-)
    4. Re:Obvious marijuana jokes aside... by deglr6328 · · Score: 2, Insightful

      It seems like people have acquired total tunnel vision about the CO2/global warming problem. hello? what about the massive amounts of NOx, CO, SO2, SO3, O3 and other compounds AND particulate soot that would result from doing this? Seems to me that burning plants is, if CO2 "clean", still a very dirty process.

      --
      - "Hear that?! The percolations are imminent! Cease your ingress!"
    5. Re:Obvious marijuana jokes aside... by fm6 · · Score: 1, Insightful

      Such a cycle might be zero carbon emissions. But there are other pollutants. Plus the ecological effects of converting vast tracts of land to fuel crops. Some of which might have the effect or releasing more carbon into the atmosphere.

  2. Conserve fuel for what we NEED it for. by SteelV · · Score: 4, Insightful

    I guess our running out of fuel in the future won't be the end of the world.. there are always sources of energy, perhaps not as easily attainable but nonetheless viable.

    However, what about certain plastics, etc. that we need, that are made from oil? Perhaps we should start moving towards alternative energy now, and save the fuel for what we need it for?

    I am by no means an expert, so please let me know if I'm way off base here.

    1. Re:Conserve fuel for what we NEED it for. by wwahammy · · Score: 5, Insightful

      Yes but that would require foresight beyond the next election cycle from our political leaders, something which is has been lacking even more lately.

    2. Re:Conserve fuel for what we NEED it for. by interiot · · Score: 2, Insightful

      Supposedly this is what capitalism is good for... dealing with scarcity and efficient allocation of resources... once oil starts running out (though definitely with some still left), gas prices will start going up rapidly. Some people will stick with gas if it's very difficult for them to change, but for most people, it will become cheaper to switch to other forms of fuel. Once most transportation starts using something else, we should still have enough oil left to devote to plastics (and recycling of plastics will become increasingly economically valuable also).

    3. Re:Conserve fuel for what we NEED it for. by drinkypoo · · Score: 3, Insightful
      The strength of this kind of thinking is that it relies on human greed, one of the most reliable forces in the known universe. If the oil runs out then petroleum plastic products will be extremely highly desirable. A lot of the plastic items we have now will be replaced with other materials that are similar in one way or another, including plant-based plastics, Aluminum, carbon fiber, blah blah blah. It will happen because people will find a way to make money doing it because it will be cheaper than, for example, digging up landfills and sorting out all the plastic which in turn will be cheaper than pumping the last few barely-accessible drops of oil out of the ground.

      Of course in the meantime a lot of people will suffer due to the inequalities inherent in such a system. No plan is perfect. A few people will get disgustingly rich, of course. Also, the planet is being shit upon. It turns out that basicallly all of the alternatives to pumping oil out of the ground and burning it, which as we all know is not particularly good for the environment as it relates to humans, are more environmentally friendly than burning dinosaurs (or turning them into soda bottles.) Of course a lot of them aren't nearly as convenient, but I don't think there's too many things that we make with oil that we can't duplicate fairly well in some other way. To preserve our ability to perform those sorts of things, we should really think about moving to some other source of energy sooner rather than later.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
  3. Duuuude... by nxtr · · Score: 5, Insightful

    You'd know this if you weren't smoking it.

  4. Another reason it won't happen. by Douglas+Simmons · · Score: 4, Insightful
    "Unfortunately grass has no political lobby, which makes the start up of any new alternative energy industry problematic," says Cherney

    A huge market barrier is that consumers won't take the chance because they're not confident they will find gas stations that supply this stuff (not to mention all the other alternatives that have been around for a while). And what's in it for the gas stations to get started in investing in whatever equipment is necessary to store and pump this stuff?

    Sorry to be Johnny Raincloud, but big changes, even if for the better with no apparent logical downside, tend not to happen. Regarding high gas prices, enough people are satisfied simply with bitching about the prices and won't bother making any dramatic changes. They're enough of them for the market to get away with blocking out newcomers like grass.

    1. Re:Another reason it won't happen. by El+Puerco+Loco · · Score: 3, Insightful

      The real problem with this and other biofuels is that it is not sustainable. to grow enough to be commercially viable will require huge amounts of fertilizer. most fertilizer for large scale farming is based on ammonium nitrate. almost all ammonium nitrate is produced directly from natural gas. so it would really just be converting petroleum to biofuel, which doesn't make sense, as the petroleum is a perfectly good fuel as it is. if the worry is running out of petroleum, the current common sense best solution is nuclear power, but common sense rarely prevails when discussing nuclear energy. replacing petroleum with renewable energy sources is a pipe dream. i think once the situation gets critical, people will be a lot more open to the nuclear option, but things will probably have to get awful bad first.

  5. What about? by Anonymous Coward · · Score: 4, Insightful

    What about all the land it takes to grow the grass? What about all the fresh water it takes to grow the grass? What about all the energy and logistics it takes to put the water on the grass? What about the energy it takes to harvest the grass and turn it into a form that's useful? How much grass would one have to grow to actually put a minor dent in the fossil fuel consumption of the world? After the dust settles, what would it cost relative to gasoline or oil?

    Why does it seem like they always fail to mention this stuff?

    1. Re:What about? by dmaxwell · · Score: 4, Insightful

      Compared to solar energy, it's somewhat favorable also

      Strictly speaking, this grass is solar energy. It's just that plants seem to be more efficient at converting solar energy than anything we've devised thus far.

  6. There just isn't enough land to make a difference by InterGuru · · Score: 2, Insightful
    Using biomass (plants) for fuel has a lot to say for it. It is a renewable resource which does not contribute to global warming. Anyone with a lawn can produce some.

    Unfortunately, when you do the numbers, we do not have enough land to replace more that a few percent of our fossil fuel consuption with biomass.

    An article in Physics Today discusses this. They only talk about fertile agricultural land, but even if you were to use marginal land, the argument stays the same.

  7. Already been done by Kohath · · Score: 5, Insightful

    My great grandfather had a mode of transportation that ran on grass.

  8. I don't believe it. by Charles+Dodgeson · · Score: 1, Insightful
    Cherney points out that grass biofuel pellets are much better for the environment because they emit up to 90 percent less greenhouse gases than oil, coal and natural gas do.

    Am I the only one who finds that claim implausible? My (uninformed) guess is that burning grass would give off almost as much CO2 as burning wood.

    --
    Prime numbers are exactly what Alan Greenspan says they are -S. Minsky
  9. Re:Roland Piquepaille by Anonymous Coward · · Score: 4, Insightful

    his content ?

    Roland Piquepaille has just cut and pasted the cornell press release and some other one,
    do a google phrase search , all will be revealed
    or just wack in Rolands site in this plagiarism detector and see for yourself how he rips off other peoples content and reposts it for profit without permission
    and then he has the cheek to put (c)Roland at the bottom of his shitty "blog"

  10. The Peak Oil issue won't go away. by newdamage · · Score: 2, Insightful

    All of us in the US are going to have to get on the alternative fuel bandwagon soon whether we like it or not. If the current oil futures boom is any indication, we're at or very close to the Peak Oil point, and it's only going to get worse from here on out.

    Most people fear higher prices at the pump, I welcome them. Anything that gets people out of SUVs and in hybrids/bicycles/walking modes of transportation will at least help give us more time to use oil while it's still plentiful to build solar panels, wind turbines, and the things we'll need to avoid going back to a 100% lo-tech farming nation.

    --
    ce n'est pas un Sig.
  11. How much land is needed? by kbahey · · Score: 2, Insightful

    Seems like a compelling argument. It has lots of advantages, and little drawbacks.

    However, I could not find this info in the article:

    Let us say I have a growing season of May to September (South end of Ontario).

    What is the amount of land needed to run a car for a year, or heat a house for the winter?

    When this is answered, one can know the amount of grass-mass needed, and whether it would be a commercially viable mass market thing, or a private grow-your-own thing.

    1. Re:How much land is needed? by entrigant · · Score: 2, Insightful

      Also keep in mind you can use hydroponics to grow the stuff and expand upward as well as outward.

  12. So... where's the money? by RaveX · · Score: 3, Insightful

    A pretty good post over at Peak Oil Optimist makes the obvious point about this nonsense: if it were really an economically feasible alternative source of energy, it wouldn't require subsidies. Saying that it beats other biomass crops in terms of energy input to output ratio isn't saying much-- ethanol production, for example, is typically a net energy loser (but it exists due to heavy subsidies). Maybe we need to stop spending so much money on farm subsidies, and focus on more realistic avenues for alternative energy?

  13. just another way to burn carbon by FranTaylor · · Score: 2, Insightful
    How is this any different from any other fuel? It's taking carbon from the earth and putting it into the atmosphere, pulling some potential energy out in the process. No different from burning coal, fuel oil, or wood. How is the carbon cycle completed? What gets the carbon back into the ground? All this does is impoverish the soil and add more carbon to the atmosphere. If you start talking about fertilizer, then you've lost your energy savings argument. Someone please tell me how this is any better than burning anything else.


    If you're going to burn something to get energy out of it, then burn it REALLY HOT in a VERY LARGE furnace so you can reduce it to CO2 and water, and take advantage of thermodynamics. I'm not advocating big power plants, but they are the best bang for the buck as far as extracting energy from carbon fuel and creating the least amount of pollution from it.

  14. what will happen to the soil? by Seahawk91 · · Score: 2, Insightful

    I seem to remember a problem with soil nutrients going up in smoke. There are all types of studies pointing to the reduction of top soil. That is why farmers have to rotate crops, add fertilizer, etc.

    The grass pellets may sound good now, but may have some serious down side.

  15. Re:"closed carbon cycle" != zero emissions by vrmlguy · · Score: 4, Insightful

    Actually, burning fossil fuels releases CO2 from carbon that's been sequestered for 70 million years or so, while burning renewable or sustainable plant matter simply recycles carbon that was sequestered within the past few months. In other words, burning fossil fuels increases the net CO2 in the atmosphere, which burning plant matter doesn't.

    --
    Nothing for 6-digit uids?
  16. Re:"closed carbon cycle" != zero emissions by damiam · · Score: 3, Insightful

    I think the point is that the act of producing plant-based fuels removes CO2 from the atmosphere.

    --
    It's hard to be religious when certain people are never incinerated by bolts of lightning.
  17. Grass is VERY thirsty. by Ungrounded+Lightning · · Score: 4, Insightful

    Grass uses a LOT of water. (Not surprising, since it's got a lot of surface area.) Acre for acre it takes more water than trees or pretty much any food crop. It evaporates something like six times as much water as a lake.

    So you're not going to want to convert land to growing grass if it doesn't have a lot of water available allready. So much for the southwest - and a lot of areas where you have the other main ingredient: sunlight.

    But if you're already growing and mowing it, what a deal.

    I'd love to get a lawnmower that delivered fuel pellets rather than mulch that needs to be hauled away or worked back into the ground. Given the price of natural and the small amount of heating I need to do in the climate where I live, a pellet stove burning lawn trimmings would be a godsend.

    --
    Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
    1. Re:Grass is VERY thirsty. by the_2nd_coming · · Score: 2, Insightful

      there are other cousins of grass that do quite well on low amounts of water.

      --



      I am the Alpha and the Omega-3
  18. Re:"closed carbon cycle" != zero emissions by js7a · · Score: 2, Insightful
    Nuclear power does not remove energy from the atmosphere, as wind power does. Heat produced from nuclear power generation and use also enters the the atmosphere.

    Nuclear power produces highly toxic waste and byproducts.

  19. Re:Roland Piquepaille by h4rm0ny · · Score: 2, Insightful


    I don't know much about this situation, but if he's not really doing anything other than swiping bits of other people's articles and /. is linking to him instead of these for his benefit, then it is (a) to the detriment of those people who originally produced or published the story and (b) the original information is presumably distorted or diluted slightly in the process - unless he were copying everything.

    The counter-argument would be that he is adding insightful or helpful additional information, but from what I gather, this is not the case. And if there is a financial tie between the editors and this guy, then that could concievably lower the quality of /. in terms of the stories shown. It could not concievably raise it. Financial ties are always dubious.

    If this guy is simply copying other stories and pasting them on his website, then there seems nothing wrong with /. users scoring a few informative points by doing the same here - there are people on dial-up out there, you know. An alternative, would be to post a direct link to the original article, wherever that is.

    In short, people get annoyed by those who skim money off other people's work without contributing anything.

    --

    Aide-toi, le Ciel t'aidera - Jeanne D'Arc.
  20. Re:Another use for Grass... by Anonymous Coward · · Score: 2, Insightful

    "I would compost, but I don't have anything I could do with the compost."

    Ask your local authority to set up green waste recycling, collection, or somewhere to dump it. Or if you live on a street where you have no need for compost, but others might, and there is space, suggest a local composting initiative in the street. Where I live there is a green waste area at the local dump, and a street I used to live in had a communual compost heap (which was more convenient to go to than the municipal one).

    The other thing is to try (I've tried this before, mostly I am still to embarassed) to complain about excess packaging, or even take the excess packaging back to where you bought the product and insist THEY recycle it (this is going to be an EU requirement for electronic waste, but doing it for excess packaging might make companies notice, perhaps).

  21. Usability of grass pellets by frisket · · Score: 2, Insightful
    The problem is that right now, one grass-pellet's volume (or indeed, weight) of petroleum fuel will run my car for several hundred meters, and until we get a good heat-to-movement conversion system for grass pellets, I don't see how I'm going to make serious use of this.

    I agree that biomass is worth investigating, but there have been dozens of projects in the area over the years, and nothing usable so far.